Appendicular skeleton

Question 1

clavicle- collar bone

Answer 1

s- shaped, easily palpated, braces shoulder, and most commonly fractured bone

Question 2

scapula- shoulder blade

Answer 2

superior, medial, and lateral borders, coracoid process for biceps attachment, glenoid cavity-the socket for humerus overlies ribs 2-7, superior, inferior, and lateral angles, spine- ridge on posterior surface, acromion- apex, supraspinous and infraspinnous fossa

Question 3

upper limb

Answer 3

3 regions containing 30 bones

Question 4

brachium- shoulder to elbow; humerus

Answer 4

proximal end- head for glenoid cavity, intertubercular- salcus for biceps tendon. distal end- capitulum for radius, trochlea for ulna. olecranon fossa- deep posterior pit

Question 5

antebrachium- forearm; radius and ulna

Answer 5

proximal ends (elbow region), radius has disc shaped head for capitulum of humerus. ulna has olecranon and trochlear notch for humerus. ulna has radial notch for head of radius to spin. distal end (wrist region) radius has styloid process. radius has ulnar notch for head of ulna. ulna has round head with styloid process

Question 6

manus- hand 27 bones including carpals, metacarpals, phalanges

Answer 6

carpal bones two rows of 4 small bones, proximal row; scaphoid, lunate, triquetrum, pisiform. distal; trapezium trapezoid, capitate, hamate. metacarpals- bones of palm, 1-base of thumb (pollex), 5-base of little finger, base- proximal end, body- shaft, head- distal end (forms knuckle). phalanges- bones of fingers, pollex- thumb (has 2 bones), three bones in all others. 2-5 proximal, middle, and distal

Question 7

articulated pelvis

Answer 7

pelvic girdle- girdle= 2 hip (coxal) bones + sacrum. joints- sacroiliac joints, pubic symphysis

Question 8

hip bone

Answer 8

ilium- iliac crest, iliac spines. Ischium- ischial tuberosity. Pubis- pubic rami. Acteabulum- hip socket. obturator foramen

Question 9

true pelvis (lesser)

Answer 9

pelvic outlet defines lower margin of lesser pelvis. contains urinary bladder, colon, and internal reproductive organs. this space is enclosed by inlet and outlet. the pelvic outlet is inferior opening that is bounded by coccyx, ischial tuberosities, and pubic symphysis.

Question 10

false pelvis (greater)

Answer 10

upper broader portion of pelvic cavity. part of abdomen. separated by pelvic brim

Question 11

male

Answer 11

more robust, prominent markings, narrower, deeper, smaller (heart shaped) pelvic inlet and outlet, tilted less forward, arch 50- 60 degrees, adapted for support of males heavier build, and stronger muscles. cavity of true pelvis is narrow and deep

Question 12

female

Answer 12

adapted to child birth, wider, shallower, larger (round) pelvic inlet and outlet, arch 80-90 degrees, true pelvis (inferior to pelvic brim) defines birth canal. cavity of true pelvis is broad, shallow, and has greater capacity