Presentation is loading. Please wait.

Presentation is loading. Please wait.

The Appendicular Skeleton Ch. 8 HUMAN ANATOMY. LATIN TERMS to know! Pect = breast Pelv = basin Sutur = seam Meta = after, adjacent Articulus = come together,

Similar presentations


Presentation on theme: "The Appendicular Skeleton Ch. 8 HUMAN ANATOMY. LATIN TERMS to know! Pect = breast Pelv = basin Sutur = seam Meta = after, adjacent Articulus = come together,"— Presentation transcript:

1 The Appendicular Skeleton Ch. 8 HUMAN ANATOMY

2 LATIN TERMS to know! Pect = breast Pelv = basin Sutur = seam Meta = after, adjacent Articulus = come together, joint Vert = turn; joint Endo = within Epi= upon Lamina = thin plate Condyle = knuckle Sym = together Be familiar with all bones & regions identified in the following notes & all underlined regions of bones!

3 Appendicular Skeletal System 126 bones Consists of the: – Upper Extremities Pectoral Girdle Humerus Ulna & radius Carpal bones Metacarpals Phalanges – Lower Extremities Pelvic girdle Femur Tibia & fibula Tarsal bones Metatarsals Phalanges

4 The Upper Extremities

5 The Upper Extremities Bones & bone regions to be familiar with! Pectoral girdle –Clavicle –Scapula Superior & medial borders Lateral border Inferior angle Caracoid process Acromion process Brachium –Humerus Head Greater & lesser tuberosities Medial & lateral epicondyles Ulnar nerve Antebrachium –Radius –Ulna Olecranon process Trochlear (semilunar) notch Carpals –Carpus Metacarpals –Manus Phalanges –Pollex

6 Clavicles –“S” shaped bones that originate at the superior lateral border of the manubrium of the sternum Scapulae –Flat bones located at the posterior lateral portion of the body SUPERIOR INFERIOR MEDIALLATERAL Manubrium

7  Regions to be familiar with  Brachium ( upper arm ) contains the humerus  Antebrachium ( forearm ) contains the radius & ulna

8  Humerus: Long bone that extends from the scapula to the elbow  Superior round portion that articulates with the scapula is known as the “ head ”  Greater & lesser tuberosities  Medial & lateral epicondyles  Sites of skeletal muscle attachment  “Tuberosity” – refers to a process  “Epi” – on, “condyle” – knuckle  Ulnar nerve : runs the length of the humerus & attaches at the proximal end of the ulna ( olecranon process )  Blow to this nerve sends sensation known as a “funny bone”

9  The humerus articulates with the radius & ulna at a location known as the “condyle”  Ulna: long bone that is medial to radius  Olecranon process: superior/ proximal end of ulna  Forms point of elbow  Trochlear (semilunar) notch: large depression where distal end of humerus articulates with the olecranon process of the ulna  Radius: long bone that is the lateral bone of forearm

10 CarpalsMetacarpalsPhalanges

11 Carpus ( wrist ) – –Contains 8 carpal short bones –2 rows Manus ( hand ) contains 19 bones in 2 groups – Metacarpals (5 in palm of hand) – Short bones that articulate with distal carpal bones to support the hand Roman numerals (I-V) are used to identify the metacarpals from lateral to medial – Phalanges (14 finger bones) – Articulate distally to metacarpal bones –Proximal, middle & distal sets Thumb is known as the pollex –Only has proximal & distal sets V I IV III II

12 The Lower Extremities

13 The Lower Extremities Bones & bone regions to be familiar with! Pelvic girdle – ossa coxae –Ilium –Ischium –Pubis Pubis symphysis Acetabulum Greater sciatic notch Ischial Tuberosity Femur –Head –Neck –Shaft –Greater ( anterior ) & Lesser ( posterior ) Trochanters –Medial & Lateral Epicondyles Patella Fibula –Head Tibia –Tibial Tuberosity –Lateral & medial condyles Tarsals –Talus –Calcaneous bone –Navicular bone –Cuboid –Lateral, medial & intermediate cuneiform bones Metatarsals Phalanges

14 Paired hipbones - “ ossa coxae ” Each hipbone – os coxa –Fusion of 3 bones Ilium (pl. – Ilia) –Extensive area of muscle, tendon, ligament attachment Ischium (pl. – Ischia) –Posterior Pubis – Anterior joint - Articulation of pubis bone at the anterior portion of the pelvic girdle – pubis symphysis Fibrocartilage at joint – Posterior articulation – Ilia articulate to sacrum of vertebral column

15 More on the Ossa Coxae Acetabulum –Articulation socket of ilia & head of each femur –All 3 bones of ossa coxae meet here Greater sciatic notch – –Area through which large sciatic nerve runs & reaches lower extremities Ischial Tuberosity – –Projection on posterior, lateral side of ischia –Bears all body weight when sitting Ilium Pubis Ischium

16 Female: –Less massive, shallower pubic arch, pelvic inlet round/oval Male: –Heavier, upper pelvis nearly vertical, coccyx more vertical, pelvic inlet heart- shaped, outlet smaller

17 Femur Fibula Tibia

18 FEMUR  Longest & heaviest bone in body  Articulates proximally with ossa coxae at hip joint & distally with tibia at knee joint  Regions to identify:  Head  Neck  Shaft  Greater (anterior) & Lesser (posterior) Trochanters  Medial & Lateral Epicondyles

19 Patella ( Kneecap ) Triangular sesamoid bone Enclosed in the quadriceps tendon that secures the anterior thigh muscles to the tibia ( lower limb ) Guards knee joint anteriorly & improves leverage of thigh muscles acting across knee joint

20 Tibia & Fibula Tibia – –Large medial bone that articulates with the epicondyles of the femur –Helps support weight –“shinbone” Fibula – –Parallels the lateral border of the tibia –Aids in moving foot & toes

21 Tarsal bones : – Talus : ankle – Calcaneous bone : heel bone – Navicular bone – Cuboid – Lateral, medial & intermediate cuneiform bones Metatarsals – –Short bones that articulate with distal tarsal bones –Identified by Roman Numerals (I-V) Phalanges ( toes, digits ) –Articulate distally to metatarsal bones Proximal, middle, distal (14 total) Big toe – “Great toe” –Has 2 phalanges (proximal & distal) V IV III II I


Download ppt "The Appendicular Skeleton Ch. 8 HUMAN ANATOMY. LATIN TERMS to know! Pect = breast Pelv = basin Sutur = seam Meta = after, adjacent Articulus = come together,"

Similar presentations


Ads by Google