week 2 teaching: the upper limb

Question 1

the pectoral girdle

Answer 1

attachment of appendicular skeleton to axial skeleton
only one bone attachment- from clavicle to the sternum
scapula is then attached to clavicle, held in place on posterior side of thorax by muscles
socket joint where humourous joins to scapula is glenoid humoural fossa

Question 2

why can we produce wide range of movement at shoulder joint

Answer 2

socket of the glenoid fossa is very shallow
allows for throwing overhead motion

Question 3

very shallow socket of glenoid fossa means

Answer 3

joint is fairly unstable- increases likelhood of joint disslocation

Question 4

three regions of upper limb

Answer 4

shoulder
arm
forearm

Question 5

shoulder region

Answer 5

humorous attaches to scapula and pectoral girdle

Question 6

arm

Answer 6

between shoulder and elbow join

Question 7

elbow

Answer 7

formed by connection from humourous to ulnar
hinge joint
one degree of freedom

Question 8

radius forms major joint with

Answer 8

carpal bones
ellipsoid joint
two degrees of freedom

Question 9

muscles around pectoral girdle

Answer 9

stabilise bones around pg
reduce movement of bones

Question 10

trapezius- posterior

Answer 10

large superficial muscle
long attachemnt along spine
inserts into triangle shape

Question 11

levator scapulae, rhomboid minor, rhomboid major- posterior

Answer 11

deep to trapezius
aid in retraction of shoulder- posterior movement of shoulder and PG

Question 12

serratus anterior- posterior

Answer 12

deep to trapezius
originates on anterior medial border
runs round to attach onto ribs on anterior surface

Question 13

trapezius- anterior

Answer 13

attaches along clavicle

Question 14

serratus anterior - anterior

Answer 14

finger like projections
produces protraction- anterior movement of shoulder

Question 15

pectoralis minor

Answer 15

acts on PG

Question 16

moving the arm- posterior

Answer 16

superficial:
-deltoid
- latissimus Dorsi
deep:
-rotator cuff muscles
- teres major
-triceps brachii (3)

Question 17

rotator cuff muscles

Answer 17

aid to stabilise shoulder joint and preventing dislocation
- Supraspinatus
-Infraspinatus
-Teres Minor
- Subscapularis

Question 18

triceps brachii

Answer 18

3 muscele bellies
one crosses shoulder joint
common insertion down onto ulnar
crosses shoulder joint and elbow joint
can produce movement at both joints

Question 19

subscapularis- identify on diagram

Answer 19

can see from lateral view of shoulder

Question 20

only rotator cuff muscle which attcahes on anterior surface of scapula

Answer 20

supraspinatus

Question 21

moving the arm- anterior

Answer 21

superficial:
deltoid
pectoralis major
subscapularis
deep:
coraco-brachialis
biceps brachii

Question 22

acronym for rotator cuff muscles

Answer 22

SITS

Question 23

muscle located on anterior surface of humourous

Answer 23

brachialis

Question 24

muscles on the posterior surface of humorous act to

Answer 24

extend the elbow joint

Question 25

muscles on the anterior surface of humourous act to

Answer 25

flex elbow joint

Question 26

why does bicep brachii muscle act as a strong supinator

Answer 26

because of the insertion of the bicep brachii muscle into radius

Question 27

two muscles which act to pronate forearms

Answer 27

pronator teres pronator quadratus

Question 28

moving the wrist and hand, common extensor origin (posterior)

Answer 28

the lateral epicondyle of the humourous

Question 29

moving wrist and hand: common flexion origin (anterior)

Answer 29

the medial epicondyle of the humourous

Question 30

moving the wrist and hand: anterior superficial layer

Answer 30

flexor carpi radialis flexor carpri ulnaris palmaris longus

Question 31

moving the wrist and hand: anterior middle layer

Answer 31

flexor digitorum superficialis run through carpal tunnel

Question 32

roof of carpal tunnel formed by

Answer 32

flexor retinaculum prevents bowing of tendons when gripping

Question 33

moving hand and wrist: anterior deep muscles

Answer 33

flexor policis longus flexor digitorum profundis tendons pass through capral tunnel

Question 34

nerve which passes through carpral tunnel

Answer 34

median nerve

Question 35

pollox muscles

Answer 35

muscles of the thumb

Question 36

thumb and little finger have their own:

Answer 36

opponens muscles flexors extensors abductors

Question 37

thumb has its own

Answer 37

adductor

Question 38

muscles which adduct and abduct the fingers

Answer 38

palmar and dorsal interossei PAD DAB