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Medicine Ellen > MSK > Flashcards

MSK Flashcards

1
Q

What are the 5 superior muscles of the forearm and what are there functions?

A 
Pronator teres - Pronates forearm
Flexor carpi radialis - Flex wrist
Flexor carpi ulnaris - Flex wrist
Palmaris longus - Flex wrist
Flexor digitorum superficialis - Flex digits
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2
Q

What is the common flexor origin of muscles of the forearm?

A

Medial epicondyle of humerus

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3
Q

What is the function of the brachioradialis and what is it innervated by?

A

Flexor of the elbow and the radial N

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4
Q

What are the branches of the brachial A and where does it bifurcate?

A

Ulnar and radial N - Cubital fossa

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5
Q

What are the 3 deep muscles of the forearm?

A 
Flexor pollicis longus
Flexor digitorum profundus 
Pronator quadratus (transverse)
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6
Q

What muscles of the forearm does the median N supply?

A

All except medial 1/2 of flexor digitorum profundus & flexor carpi ulnaris (which are supplied by ulnar N)

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7
Q

What connects the radius and ulna?

A

Interosseus membrane

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8
Q

What is the innervation of the front of the forearm?

A

All supplied by median N except flexor carpi ulnaris, medial 1/2 of the flexor digitorum profundus and the brachioradialis

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9
Q

What is the brachioradialis innervated by?

A

Radial N

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10
Q

What are the flexor carpi ulnaris and medial 1/2 of the flexor digitorum profundus innervated by?

A

Ulnar N

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11
Q

What does the carpal tunnel contain?

A 
Median N 
& Tendons of the:
Flexor digitorum superficialis
Flexor digitorum profundus
Flexor pollicus longus
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12
Q

What are the thenar muscles supplied by?

A

Median N

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13
Q

What is the superficial palmar arch?

A

Termination of the ulnar A

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14
Q

What are the medial 1 1/2 fingers innervated by?

A

Ulnar N

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15
Q

What are the lateral 3 1/2 fingers innervated by?

A

Median N

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16
Q

What hand muscles does the median N innervate?

A

3 thenar muscles & 2 lateral lumbrical muscles (all others supplied by ulnar)

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17
Q

What are the 3 thinner muscles? and what are they innervated by?

A

Abductor pollicis brevis
Flexor pollicis brevis
Opponens pollicis
Median N

18
Q

What is the adductor pollicis innervated by?

A

Ulnar N

19
Q

What are the 3 hypothenar muscles and what are they innervated by?

A

Abductor digiti minimi
Flexor digiti minimi
Opponens digiti minimi
Ulnar N

20
Q

What are the 2 lateral lumbrical muscles innervated by?

A

median N

21
Q

What are the 2 medial lumbrical muscles innervated by?

A

Ulnar N

22
Q

What is the function of the palmar interossei?

A

Adducts fingers (P-AD)

23
Q

What is the function of the dorsal interossei?

A

Abducts fingers (D-AB)

24
Q

Is the flexor digitorum superficialis inserted into the phalanges proximally or distally?

A

Proximally (spilts)

25
Q

Is the flexor digitorum profundus inserted into the phalanges proximally or distally?

A

Distally (doesn’t split)

26
Q

What are the functions of the biceps brachii?

A

Forearm supination & flexion

27
Q

How many carpal bones are there?

A

8

28
Q

What carpal bone articulates w/ the radius?

A

Scaphoid

29
Q

How many metacarpal bones are there?

A

5

30
Q

How many phalanges are there in the fingers and thumb?

A

3 in each finger and 2 in each thumb

31
Q

What is the pectoralis major innervated by and what cord of the brachial plexus do they originate from?

A

Medial and lateral pectoral nerves (med and lateral cords)

32
Q

What is the pectoralis minor innervated by and what cord of the brachial plexus does it originate from?

A

Medial pectoral N (medial cord)

33
Q

What nerve are the extensors of the forearm innervated by?

A

Radial N

34
Q

What nerves innervate the flexors of the forearm?

A

medial and ulnar N

35
Q

What 3 things does the cubital fossa contain?

A

brachial A, median N and bicep tendon

36
Q

What roots of the brachial plexus contribute to the radial N?

A

All (c5, c6, c7, c8, t1)

37
Q

What roots of the brachial plexus contribute to the axillary N?

A

c5 and c6

38
Q

What roots of the brachial plexus contribute to the musclutocutaneous N?

A

c5, c6 and c7

39
Q

What roots of the brachial plexus contribute to the median N?

A

c6, c7, c8 and t1

40
Q

What roots of the brachial plexus contribute to the ulnar N?

A

c8 and t1

41
Q

What muscle morphology has the greatest power?

A

Multipennate

42
Q

What muscle morphology can pull the furthest distance?

A

Strap

Medicine Ellen (7 decks)

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