anatomy: limbs

Question 1

What are the 3 thenar muscles?

Answer 1

Abductor pollicis brevis, flexor pollicis brevis, opponens pollicis

Question 2

What does the abductor pollicis brevis do?

Answer 2

Pulls the thumb away from the palm

Question 3

What does the flexor pollicis brevis do?

Answer 3

Flex the metacarpophalangeal joint

Question 4

What does the opponent policies do?

Answer 4

Rotates the metacarpal

Question 5

What is medial and deep to the thena muscles?

Answer 5

Adductor pollicis

Question 6

What does the adductor pollicis do?

Answer 6

Exerts pressure on an object when its being gripped

Question 7

What innervates the thenar muscles?

Answer 7

Median nerve

Question 8

What innervates the adductor polices?

Answer 8

Ulnar nerve

Question 9

Where are the thenar muscles?

Answer 9

At the base of the thumb

Question 10

Where are the hypothenar muscles?

Answer 10

At the base of the little finger

Question 11

What are the 3 hypothenar muscles?

Answer 11

Abductor digiti minimi, flexor digiti minimi and opponens digiti minimi

Question 12

What innovates the hypothenar muscles?

Answer 12

Ulnar nerve

Question 13

How many lumbrical muscles are there?

Answer 13

4

Question 14

What innervates the 2 medial lumbricals?

Answer 14

Ulnar nerve

Question 15

What innervates the lateral 2 lumbricals?

Answer 15

Median nerve

Question 16

What are the lumbrical muscles used for?

Answer 16

Flex the metacarpophalangeal and extend the interphalangeal joints

Question 17

Where are the interossei muscles?

Answer 17

Between the metacarpal bones

Question 18

What are the 2 groups of interossei muscles?

Answer 18

Palmar and dorsal

Question 19

What do the palmar interossei do?

Answer 19

Palmar interossei ADduct (PAD) the fingers (fingers move towards the middle finger)

Question 20

What do the dorsal interossei do?

Answer 20

Dorsal interossei ABduct (DAB)

Question 21

What innervates the interossei?

Answer 21

Ulnar nerve

Question 22

What supplies the trapezius?

Answer 22

Cranial nerve xi (accessory nerve)

Question 23

What innovates the scapular muscles (and pectoralis minor and major)

Answer 23

Branches off brachial plexus

Question 24

What innovates the deltoid muscle?

Answer 24

Axillary

Question 25

What innervates the flexors?

Answer 25

musculocutaneous nerve

Question 26

What innervates the extensors?

Answer 26

Radial nerve

Question 27

What does LLOAF stand for?

Answer 27

Lateral Lumbricals, Opponens pollicis, Abductor pollicis brevis, Flexor pollicis brevis

Question 28

What are LLOAF muscles innervated by?

Answer 28

Median nerve

Question 29

What is the medical term for the funny bone?

Answer 29

epicondyle of the humerus

Question 30

What is the big superficial muscle on the upper back?

Answer 30

Trapezius

Question 31

Scientific term for the socket part of the shoulder joint?

Answer 31

Glenoid fossa

Question 32

What are the 4 rotator cuff muscles?

Answer 32

Suprascapularis, subscapularis, infrascapularis and teres minor

Question 33

What runs in the delto-pectoral groove?

Answer 33

Cephalin vein

Question 34

Root of brachial plexus?

Answer 34

C5-C8, T1

Question 35

Where do the roots of the brachial plexus arise from?

Answer 35

The intervertebral foramina

Question 36

The roots of the brachial plexus are deep to which muscle?

Answer 36

Scalenus anterior

Question 37

Which nerve runs on the surface of scalenus anterior?

Answer 37

Phrenic nerve

Question 38

What is posterior to scalenus anterior?

Answer 38

Scalenus posterior

Question 39

Where is the lower part of the brachial plexus?

Answer 39

Anterior axillary fold

Question 40

Where does the subclavian vein enter the axilla?

Answer 40

Anterior to the scalenus anterior

Question 41

Where does the subclavian artery enter the axilla?

Answer 41

Between the scalenus anterior and the scalenus medius

Question 42

At the outer border of the first rib what happens?

Answer 42

The blood vessels change from 'subclavian' to ‘axillary’

Question 43

Where do the blood vessels change their names from axillary to brachial

Answer 43

Anterior axillary fold

Question 44

The posterior cord of the brachial plexus becomes what?

Answer 44

Radial nerve, axillary nerve (and three smaller nerves)

Question 45

What does the lateral cord become? (brachial plexus)

Answer 45

Musculocutaneous and lateral part of the medial nerve

Question 46

What dues the medial cord of the brachial plexus become?

Answer 46

Ulnar nerve and medial part of the median nerve

Question 47

What are the two major veins in the anterior arm?

Answer 47

Cephalic and basilic veins

Question 48

What muse is deep to the biceps?

Answer 48

Brachialis

Question 49

What lies between the biceps and the brachialis?

Answer 49

Musculocutaneous nerve

Question 50

What does the musculocutaneous nerve supply?

Answer 50

Biceps, brachialis, coracobrachialis and lateral forearm

Question 51

Origins of the biceps?

Answer 51

Superior aspect of the glenoid fossa (long head) and coracoid (short head)

Question 52

Which muscles have origin on the coracoid?

Answer 52

Biceps and coracobrachialis

Question 53

What is the insertion of the biceps?

Answer 53

Radial tuberosity

Question 54

Where is the antecubital fossa?

Answer 54

Directly infront of the elbow joint

Question 55

which muscle flexes the thumb?

Answer 55

flexor pollicis brevis

Question 56

which nerve runs through the carpal tunnel?

Answer 56

median nerve

Question 57

what does the musculocutaneous nerve supply?

Answer 57

anterior arm

Question 58

what does the radial nerve supply?

Answer 58

posterior arm and forearm

Question 59

what does the medial nerve supply?

Answer 59

anterior forearm EXCEPT flexor carpi ulnaris and medial flexor digitorum profundus

Question 60

what does the ulnar nerve supply?

Answer 60

flexor carpi ulnaris and medial digitorum profundus (pinky and ring fingers)