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The Female Reproductive System
Two Divisions of Endometrium Functional zone Layer closest to uterine cavity Basilar zone Adjacent to myometrium
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The Female Reproductive System
Menses Is the degeneration of functional zone Occurs in patches Is caused by constriction of spiral arteries Reducing blood flow, oxygen, and nutrients Weakened arterial walls rupture Releasing blood into connective tissues of functional zone
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The Female Reproductive System
Three Suspensory Ligaments of Uterus Uterosacral ligaments Prevent inferior–anterior movement Round ligaments Restrict posterior movement Cardinal (lateral) ligaments Prevent inferior movement
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The Female Reproductive System
Uterine Body (or corpus) Is largest portion of uterus Ends at isthmus Fundus Is rounded portion of uterine body Superior to attachment of uterine tubes
6
The Female Reproductive System
Cervix Is inferior portion of uterus Extends from isthmus to vagina Distal end projects about 1.25 cm (0.5 in.) into vagina External os Also called external orifice of uterus Is surrounded by distal end of cervix Leads into cervical canal
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The Female Reproductive System
Cervical Canal Is a constricted passageway opening to uterine cavity of body At internal os (internal orifice)
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The Female Reproductive System
Nerves of the Uterus Autonomic fibers from hypogastric plexus (sympathetic) Sacral segments S3 and S4 (parasympathetic) Segmental blocks Anesthetic procedure used during labor Target spinal nerves T10–L1
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The Female Reproductive System
Figure 26–18a The Uterus.
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The Female Reproductive System
Figure 26–18b The Uterus.
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The Female Reproductive System
The Uterine Wall Has a thick, outer, muscular myometrium Has a thin, inner, glandular endometrium (mucosa)
12
The Female Reproductive System
Two Divisions of Endometrium Functional zone Layer closest to uterine cavity Basilar zone Adjacent to myometrium
13
The Female Reproductive System
Menses Is the degeneration of functional zone Occurs in patches Is caused by constriction of spiral arteries Reducing blood flow, oxygen, and nutrients Weakened arterial walls rupture Releasing blood into connective tissues of functional zone
14
The Female Reproductive System
Figure 26–20b The Appearance of the Endometrium during the Uterine Cycle.
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The Female Reproductive System
The Secretory Phase Endometrial glands enlarge, increasing rate of secretion Arteries of uterine wall Elongate and spiral through functional zone Begins at ovulation and persists as long as corpus luteum remains intact Peaks about 12 days after ovulation Glandular activity declines Generally lasts 14 days
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The Female Reproductive System
The Vagina Cervix projects into vaginal canal Fornix is shallow recess surrounding cervical protrusion Lies parallel to Rectum, posteriorly Urethra, anteriorly
17
The Female Reproductive System
Blood Supply of the Vagina Is through vaginal branches of internal iliac (uterine) arteries and veins
18
The Female Reproductive System
The Secretory Phase Endometrial glands enlarge, increasing rate of secretion Arteries of uterine wall Elongate and spiral through functional zone Begins at ovulation and persists as long as corpus luteum remains intact Peaks about 12 days after ovulation Glandular activity declines Generally lasts 14 days
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The Female Reproductive System
Figure 26–20c The Appearance of the Endometrium during the Uterine Cycle.
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The Female Reproductive System
The Uterine Cycle Ends as corpus luteum stops producing stimulatory hormones
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The Female Reproductive System
Menarche The first uterine cycle Begins at puberty (age 11–12) Menopause The termination of uterine cycles Age 45–55
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The Female Reproductive System
Amenorrhea Primary amenorrhea Failure to initiate menses Transient secondary amenorrhea Interruption of 6 months or more Caused by physical or emotional stresses
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The Female Reproductive System
The Vagina Is an elastic, muscular tube Extends between cervix and vestibule 7.5–9 cm (3-3.6 in.) long Highly distensible
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The Female Reproductive System
The Vagina Cervix projects into vaginal canal Fornix is shallow recess surrounding cervical protrusion Lies parallel to Rectum, posteriorly Urethra, anteriorly
25
The Female Reproductive System
Blood Supply of the Vagina Is through vaginal branches of internal iliac (uterine) arteries and veins
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The Female Reproductive System
Menses Is the degeneration of functional zone Occurs in patches Is caused by constriction of spiral arteries Reducing blood flow, oxygen, and nutrients Weakened arterial walls rupture Releasing blood into connective tissues of functional zone
27
The Female Reproductive System
Three Suspensory Ligaments of Uterus Uterosacral ligaments Prevent inferior–anterior movement Round ligaments Restrict posterior movement Cardinal (lateral) ligaments Prevent inferior movement
28
The Female Reproductive System
Uterine Body (or corpus) Is largest portion of uterus Ends at isthmus Fundus Is rounded portion of uterine body Superior to attachment of uterine tubes
29
The Female Reproductive System
Cervix Is inferior portion of uterus Extends from isthmus to vagina Distal end projects about 1.25 cm (0.5 in.) into vagina External os Also called external orifice of uterus Is surrounded by distal end of cervix Leads into cervical canal
30
The Female Reproductive System
Cervical Canal Is a constricted passageway opening to uterine cavity of body At internal os (internal orifice)
31
The Female Reproductive System
Blood Supply of the Uterus Branches of uterine arteries Arising from branches of internal iliac arteries Ovarian arteries Arising from abdominal aorta Veins and lymphatic vessels
32
The Female Reproductive System
Nerves of the Uterus Autonomic fibers from hypogastric plexus (sympathetic) Sacral segments S3 and S4 (parasympathetic) Segmental blocks Anesthetic procedure used during labor Target spinal nerves T10–L1
33
The Female Reproductive System
Figure 26–18a The Uterus.
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The Female Reproductive System
Figure 26–18b The Uterus.
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The Female Reproductive System
The Uterine Wall Has a thick, outer, muscular myometrium Has a thin, inner, glandular endometrium (mucosa)
36
The Female Reproductive System
Two Divisions of Endometrium Functional zone Layer closest to uterine cavity Basilar zone Adjacent to myometrium
37
The Female Reproductive System
Figure 26–20c The Appearance of the Endometrium during the Uterine Cycle.
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The Female Reproductive System
Blood Supply of the Vagina Is through vaginal branches of internal iliac (uterine) arteries and veins
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The Female Reproductive System
Innervation of the Vagina Hypogastric plexus Sacral nerves Branches of pudendal nerve
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The Female Reproductive System
Vaginal Lamina Propria Is thick and elastic Contains small blood vessels, nerves, and lymph nodes
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The Female Reproductive System
The Vaginal Mucosa Is surrounded by elastic muscularis layer Layers of smooth muscle fibers Arranged in circular and longitudinal bundles Continuous with uterine myometrium
42
The Female Reproductive System
Menses Is the degeneration of functional zone Occurs in patches Is caused by constriction of spiral arteries Reducing blood flow, oxygen, and nutrients Weakened arterial walls rupture Releasing blood into connective tissues of functional zone
43
The Female Reproductive System
Three Suspensory Ligaments of Uterus Uterosacral ligaments Prevent inferior–anterior movement Round ligaments Restrict posterior movement Cardinal (lateral) ligaments Prevent inferior movement
44
The Female Reproductive System
Uterine Body (or corpus) Is largest portion of uterus Ends at isthmus Fundus Is rounded portion of uterine body Superior to attachment of uterine tubes
45
The Female Reproductive System
Cervix Is inferior portion of uterus Extends from isthmus to vagina Distal end projects about 1.25 cm (0.5 in.) into vagina External os Also called external orifice of uterus Is surrounded by distal end of cervix Leads into cervical canal
46
The Female Reproductive System
Blood Supply of the Uterus Branches of uterine arteries Arising from branches of internal iliac arteries Ovarian arteries Arising from abdominal aorta Veins and lymphatic vessels
47
The Female Reproductive System
Nerves of the Uterus Autonomic fibers from hypogastric plexus (sympathetic) Sacral segments S3 and S4 (parasympathetic) Segmental blocks Anesthetic procedure used during labor Target spinal nerves T10–L1
48
The Female Reproductive System
Figure 26–18a The Uterus.
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The Female Reproductive System
Figure 26–18b The Uterus.
50
The Female Reproductive System
The Uterine Wall Has a thick, outer, muscular myometrium Has a thin, inner, glandular endometrium (mucosa)
51
The Female Reproductive System
Two Divisions of Endometrium Functional zone Layer closest to uterine cavity Basilar zone Adjacent to myometrium
52
The Female Reproductive System
Menses Is the degeneration of functional zone Occurs in patches Is caused by constriction of spiral arteries Reducing blood flow, oxygen, and nutrients Weakened arterial walls rupture Releasing blood into connective tissues of functional zone
53
The Female Reproductive System
Figure 26–20b The Appearance of the Endometrium during the Uterine Cycle.
54
The Female Reproductive System
The Secretory Phase Endometrial glands enlarge, increasing rate of secretion Arteries of uterine wall Elongate and spiral through functional zone Begins at ovulation and persists as long as corpus luteum remains intact Peaks about 12 days after ovulation Glandular activity declines Generally lasts 14 days
55
The Female Reproductive System
The Vagina Cervix projects into vaginal canal Fornix is shallow recess surrounding cervical protrusion Lies parallel to Rectum, posteriorly Urethra, anteriorly
56
The Female Reproductive System
Blood Supply of the Vagina Is through vaginal branches of internal iliac (uterine) arteries and veins
57
The Female Reproductive System
The Secretory Phase Endometrial glands enlarge, increasing rate of secretion Arteries of uterine wall Elongate and spiral through functional zone Begins at ovulation and persists as long as corpus luteum remains intact Peaks about 12 days after ovulation Glandular activity declines Generally lasts 14 days
58
The Female Reproductive System
Figure 26–20c The Appearance of the Endometrium during the Uterine Cycle.
59
The Female Reproductive System
The Uterine Cycle Ends as corpus luteum stops producing stimulatory hormones
60
The Female Reproductive System
Menarche The first uterine cycle Begins at puberty (age 11–12) Menopause The termination of uterine cycles Age 45–55
61
The Female Reproductive System
Amenorrhea Primary amenorrhea Failure to initiate menses Transient secondary amenorrhea Interruption of 6 months or more Caused by physical or emotional stresses
62
The Female Reproductive System
The Vagina Is an elastic, muscular tube Extends between cervix and vestibule 7.5–9 cm (3-3.6 in.) long Highly distensible
63
The Female Reproductive System
The Vagina Cervix projects into vaginal canal Fornix is shallow recess surrounding cervical protrusion Lies parallel to Rectum, posteriorly Urethra, anteriorly
64
The Female Reproductive System
Blood Supply of the Vagina Is through vaginal branches of internal iliac (uterine) arteries and veins
65
The Female Reproductive System
Menses Is the degeneration of functional zone Occurs in patches Is caused by constriction of spiral arteries Reducing blood flow, oxygen, and nutrients Weakened arterial walls rupture Releasing blood into connective tissues of functional zone
66
The Female Reproductive System
Three Suspensory Ligaments of Uterus Uterosacral ligaments Prevent inferior–anterior movement Round ligaments Restrict posterior movement Cardinal (lateral) ligaments Prevent inferior movement
67
The Female Reproductive System
Uterine Body (or corpus) Is largest portion of uterus Ends at isthmus Fundus Is rounded portion of uterine body Superior to attachment of uterine tubes
68
The Female Reproductive System
Cervix Is inferior portion of uterus Extends from isthmus to vagina Distal end projects about 1.25 cm (0.5 in.) into vagina External os Also called external orifice of uterus Is surrounded by distal end of cervix Leads into cervical canal
69
The Female Reproductive System
Cervical Canal Is a constricted passageway opening to uterine cavity of body At internal os (internal orifice)
70
The Female Reproductive System
Blood Supply of the Uterus Branches of uterine arteries Arising from branches of internal iliac arteries Ovarian arteries Arising from abdominal aorta Veins and lymphatic vessels
71
The Female Reproductive System
Nerves of the Uterus Autonomic fibers from hypogastric plexus (sympathetic) Sacral segments S3 and S4 (parasympathetic) Segmental blocks Anesthetic procedure used during labor Target spinal nerves T10–L1
72
The Female Reproductive System
Figure 26–18a The Uterus.
73
The Female Reproductive System
Figure 26–18b The Uterus.
74
The Female Reproductive System
The Uterine Wall Has a thick, outer, muscular myometrium Has a thin, inner, glandular endometrium (mucosa)
75
The Female Reproductive System
Two Divisions of Endometrium Functional zone Layer closest to uterine cavity Basilar zone Adjacent to myometrium
76
The Female Reproductive System
Figure 26–20c The Appearance of the Endometrium during the Uterine Cycle.
77
The Female Reproductive System
Blood Supply of the Vagina Is through vaginal branches of internal iliac (uterine) arteries and veins
78
The Female Reproductive System
Innervation of the Vagina Hypogastric plexus Sacral nerves Branches of pudendal nerve
79
The Female Reproductive System
Vaginal Lamina Propria Is thick and elastic Contains small blood vessels, nerves, and lymph nodes
80
The Female Reproductive System
The Vaginal Mucosa Is surrounded by elastic muscularis layer Layers of smooth muscle fibers Arranged in circular and longitudinal bundles Continuous with uterine myometrium
81
The Female Reproductive System
Vaginal Bacteria A population of harmless resident bacteria Supported by nutrients in cervical mucus Creates acidic environment Restricts growth of many pathogens
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The Female Reproductive System
A Vaginal Smear Is a sample of epithelial cells shed at surface of vagina Used to estimate stage in ovarian and uterine cycles
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The Female Reproductive System
Vulva (or pudendum) Area containing female external genitalia Vestibule A central space bounded by small folds (labia minora) Covered with smooth, hairless skin Urethra opens into vestibule Anterior to vaginal entrance
84
The Female Reproductive System
Menses Is the degeneration of functional zone Occurs in patches Is caused by constriction of spiral arteries Reducing blood flow, oxygen, and nutrients Weakened arterial walls rupture Releasing blood into connective tissues of functional zone
85
The Female Reproductive System
Three Suspensory Ligaments of Uterus Uterosacral ligaments Prevent inferior–anterior movement Round ligaments Restrict posterior movement Cardinal (lateral) ligaments Prevent inferior movement
86
The Female Reproductive System
Uterine Body (or corpus) Is largest portion of uterus Ends at isthmus Fundus Is rounded portion of uterine body Superior to attachment of uterine tubes
87
The Female Reproductive System
Cervix Is inferior portion of uterus Extends from isthmus to vagina Distal end projects about 1.25 cm (0.5 in.) into vagina External os Also called external orifice of uterus Is surrounded by distal end of cervix Leads into cervical canal
88
The Female Reproductive System
Cervical Canal Is a constricted passageway opening to uterine cavity of body At internal os (internal orifice)
89
The Female Reproductive System
Blood Supply of the Uterus Branches of uterine arteries Arising from branches of internal iliac arteries Ovarian arteries Arising from abdominal aorta Veins and lymphatic vessels
90
The Female Reproductive System
Nerves of the Uterus Autonomic fibers from hypogastric plexus (sympathetic) Sacral segments S3 and S4 (parasympathetic) Segmental blocks Anesthetic procedure used during labor Target spinal nerves T10–L1
91
The Female Reproductive System
Figure 26–18a The Uterus.
92
The Female Reproductive System
Figure 26–18b The Uterus.
93
The Female Reproductive System
The Uterine Wall Has a thick, outer, muscular myometrium Has a thin, inner, glandular endometrium (mucosa)
94
The Female Reproductive System
Two Divisions of Endometrium Functional zone Layer closest to uterine cavity Basilar zone Adjacent to myometrium
95
The Female Reproductive System
Menses Is the degeneration of functional zone Occurs in patches Is caused by constriction of spiral arteries Reducing blood flow, oxygen, and nutrients Weakened arterial walls rupture Releasing blood into connective tissues of functional zone
96
The Female Reproductive System
Figure 26–20b The Appearance of the Endometrium during the Uterine Cycle.
97
The Female Reproductive System
The Secretory Phase Endometrial glands enlarge, increasing rate of secretion Arteries of uterine wall Elongate and spiral through functional zone Begins at ovulation and persists as long as corpus luteum remains intact Peaks about 12 days after ovulation Glandular activity declines Generally lasts 14 days
98
The Female Reproductive System
The Vagina Cervix projects into vaginal canal Fornix is shallow recess surrounding cervical protrusion Lies parallel to Rectum, posteriorly Urethra, anteriorly
99
The Female Reproductive System
Blood Supply of the Vagina Is through vaginal branches of internal iliac (uterine) arteries and veins
100
The Female Reproductive System
The Secretory Phase Endometrial glands enlarge, increasing rate of secretion Arteries of uterine wall Elongate and spiral through functional zone Begins at ovulation and persists as long as corpus luteum remains intact Peaks about 12 days after ovulation Glandular activity declines Generally lasts 14 days
101
The Female Reproductive System
Figure 26–20c The Appearance of the Endometrium during the Uterine Cycle.
102
The Female Reproductive System
The Uterine Cycle Ends as corpus luteum stops producing stimulatory hormones
103
The Female Reproductive System
Menarche The first uterine cycle Begins at puberty (age 11–12) Menopause The termination of uterine cycles Age 45–55
104
The Female Reproductive System
Amenorrhea Primary amenorrhea Failure to initiate menses Transient secondary amenorrhea Interruption of 6 months or more Caused by physical or emotional stresses
105
The Female Reproductive System
The Vagina Is an elastic, muscular tube Extends between cervix and vestibule 7.5–9 cm (3-3.6 in.) long Highly distensible
106
The Female Reproductive System
The Vagina Cervix projects into vaginal canal Fornix is shallow recess surrounding cervical protrusion Lies parallel to Rectum, posteriorly Urethra, anteriorly
107
The Female Reproductive System
Blood Supply of the Vagina Is through vaginal branches of internal iliac (uterine) arteries and veins
108
The Female Reproductive System
Menses Is the degeneration of functional zone Occurs in patches Is caused by constriction of spiral arteries Reducing blood flow, oxygen, and nutrients Weakened arterial walls rupture Releasing blood into connective tissues of functional zone
109
The Female Reproductive System
Three Suspensory Ligaments of Uterus Uterosacral ligaments Prevent inferior–anterior movement Round ligaments Restrict posterior movement Cardinal (lateral) ligaments Prevent inferior movement
110
The Female Reproductive System
Uterine Body (or corpus) Is largest portion of uterus Ends at isthmus Fundus Is rounded portion of uterine body Superior to attachment of uterine tubes
111
The Female Reproductive System
Cervix Is inferior portion of uterus Extends from isthmus to vagina Distal end projects about 1.25 cm (0.5 in.) into vagina External os Also called external orifice of uterus Is surrounded by distal end of cervix Leads into cervical canal
112
The Female Reproductive System
Cervical Canal Is a constricted passageway opening to uterine cavity of body At internal os (internal orifice)
113
The Female Reproductive System
Blood Supply of the Uterus Branches of uterine arteries Arising from branches of internal iliac arteries Ovarian arteries Arising from abdominal aorta Veins and lymphatic vessels
114
The Female Reproductive System
Nerves of the Uterus Autonomic fibers from hypogastric plexus (sympathetic) Sacral segments S3 and S4 (parasympathetic) Segmental blocks Anesthetic procedure used during labor Target spinal nerves T10–L1
115
The Female Reproductive System
Figure 26–18a The Uterus.
116
The Female Reproductive System
Figure 26–18b The Uterus.
117
The Female Reproductive System
The Uterine Wall Has a thick, outer, muscular myometrium Has a thin, inner, glandular endometrium (mucosa)
118
The Female Reproductive System
Two Divisions of Endometrium Functional zone Layer closest to uterine cavity Basilar zone Adjacent to myometrium
119
The Female Reproductive System
Figure 26–20c The Appearance of the Endometrium during the Uterine Cycle.
120
The Female Reproductive System
Blood Supply of the Vagina Is through vaginal branches of internal iliac (uterine) arteries and veins
121
The Female Reproductive System
Innervation of the Vagina Hypogastric plexus Sacral nerves Branches of pudendal nerve
122
The Female Reproductive System
Vaginal Lamina Propria Is thick and elastic Contains small blood vessels, nerves, and lymph nodes
123
The Female Reproductive System
The Vaginal Mucosa Is surrounded by elastic muscularis layer Layers of smooth muscle fibers Arranged in circular and longitudinal bundles Continuous with uterine myometrium
124
The Female Reproductive System
The Vaginal Epithelium Is nonkeratinized, stratified, and squamous Forms folds (rugae) Changes with ovarian cycle
125
The Female Reproductive System
Vulva (or pudendum) Area containing female external genitalia Vestibule A central space bounded by small folds (labia minora) Covered with smooth, hairless skin Urethra opens into vestibule Anterior to vaginal entrance
126
The Female Reproductive System
Paraurethral Glands Also called Skene glands Discharge into urethra near external opening
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The Female Reproductive System
Mammary Glands Consist of lobes Each containing several secretory lobules Separated by dense connective tissue
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The Female Reproductive System
Suspensory Ligaments of the Breast Bands of connective tissue Originate in dermis of overlying skin Areolar tissue separates mammary gland complex from underlying pectoralis muscles Blood Supply of Mammary Glands Branches of internal thoracic artery
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