4. Uterus Hollow, muscular, pear-shaped organ Located medially in the anterior portion of the pelvic cavity Body of the uterus (22): upper 2/3 Cervix (5): – lower 1/3 – Connects to vagina (6) Cervical orifice (24): opening from uterus to vagina

Uterine Wall 1.Endometrium(20)– mucosal layer 2.Myometrium(21) - _______ layer 3.Perimetrium(23) – serosal (thin, watery- filled) layer

6. Vagina Fibromuscular tube that extends from the uterus to the outside of the body Located posterior to urinary bladder (11) and urethra (12), and anterior to rectum (14) (see Fig diagram) Functions: 1.Conveys uterine secretions 2.Receives penis during intercourse 3.Channel for birth

Vaginal Wall 1.Inner mucosal layer LACKS mucosal glands Mucous comes from uterine glands and vestibular glands at mouth of vagina 2.Middle muscular layer Mostly smooth muscle (involuntary) Bulbospongiosus muscle (voluntary) closes off vaginal orifice (7)

Vaginal Wall, continued….. 3. Outer fibrous layer – Dense connective tissue – Attaches vagina to surrounding organs Urethra (13) Rectum (14)

Female External Accessory Organs 1.Labia majora 2.Labia minora 3.Clitoris 4.Vestibule

9. Labia Majora Enclose and protect other external accessory organs Correspond to male scrotum Composed of 2 rounded folds of adipose tissue, smooth muscle, and skin that lie on either side of other the other accessory organs Anterior ends join to form the mons pubis

8. Labia Minora 2 flattened folds that lie between the labia majora Join with the labia majora posteriorly Merge anteriorly to form a protective, hoodlike covering around the clitoris

10. Clitoris Small projection at the anterior end of the vulva (the external accessory organs that surround the vaginal opening) Corresponds to male penis: – 2 columns of erectile tissue (corpora cavernosa) – Glans, erectile tissue at anterior end, contains sensory nerve endings So what would be its function?

Vestibule The space enclosed between the labia minora Vestibular glands: – 2 at the opening of the vagina – Correspond to male bulbourethral glands (FUNCTION?) Vestibular bulbs: – lie beneath the mucosa of the vestibule on either side – A mass of erectile tissue