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summer 24 > Anatomy Lecture 3 > Flashcards

Anatomy Lecture 3 Flashcards

1
Q

What makes up the cubital fossa?

A
  • brachial artery
  • biceps tendon
  • median nerve
  • radial nerve
  • median cubital vein
  • medial and lateral cutaneous nerves
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2
Q

Boundaries of cubital fossa?

A
  • superiorly: imaginary line connecting medial and lateral eipcondyles
  • medially: pronator teres
  • laterally: brachioradialis
  • floor: brachial and supinator
  • roof: cubital fascia and skin
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3
Q

muscles that move the wrist reside in the ___

A

forearm

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4
Q

muscles that move the fingers resides in ____or the ____

A
  • forearm
  • hand
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5
Q

Flexors tend to originate at the ____ of the humerus

A

Medial epicondyle

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6
Q

Extensors tend to originate at the ____ of the humerus

A

Lateral Epicondyle

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7
Q

where do deep flexors originate?

A
  • forearm
  • they are shorter
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8
Q

Radius and the ulna are joined by what?

A

Interosseous membrane

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9
Q

Flexors are supplied by what nerve?

A
  • median
  • ulnar (flexor carpi Ulnaris)
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10
Q

Extensors are supplied by what nerve?

A

Radial

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11
Q

What is the role of the flexor and extensor retinaculum do?

A

Hold the tendons together like a wrist band

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12
Q

Muscles of the Superficial flexor region

A
  • pronator teres
  • flexor carpi radialis
  • palmaris longus
  • flexor carpi ulnaris
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13
Q

Muscles of the Intermediate flexor region

A

Flexor digitorum superficialis

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14
Q

Muscles of the deep flexor region

A
  • Flexor digitorm profundus
  • flexor pollicis longus
  • pronator quadratus
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15
Q

Pronator Teres

A

Proximal attachment: coronoid process of the ulna
Distal attachment: lateral surface of radius
Innervation: median nerve
Action: pronates forearm

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16
Q

Flexor Carpi Radialis

A

Proximal attachment: Medial epicondyle of humerus
Distal attachment: base of 2nd and 3rd metacarpals
Innervation: Median nerve
Action: flexion and abduction of hand

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17
Q

Palmaris longus

A

Proximal attachment: medial epicondyle
Distal attachment: palmar aponeurosis
Innervation: median nerve
Action: hand flexion and tenses palmer aponeurosis

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18
Q

Flexor carpi ulnaris

A

Proximal attachment: olecranon process
Distal attachement: pisiform, hook of hamate, 5th metacarpal
Innervation: ulnar nerve
action: adduction and flexion of hand at wrist

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19
Q

Flexor digitorum

A

Proximal attachment: medial epicondyle, coronoid process of ulna and anterior radius
Distal attachment: middle phalanges of middle four fingers (2-5)
Innervation: median nerve
Action: flexion of proximal interphalangeal (PIP) joints of fingers (2-5)

20
Q

Flexor digitorum profundus

A

proximal attachment: ulan and interosseous membrane (IM)
distal attachment: base of distal phalanges of fingers (2-5)
Innervation: lateral part of finger 2,3 by median nerve. medial part finger 4,5 by ulnar nerve. (median lies between FDS and FDP)
Action: flexion of distal inter-phalangeal (DIP) joints of fingers 2-5

21
Q

Flexor Pollic(K)is longus

A

proximal attachment: radius and interosseous membrane
distal attachment: base of distal phalanx of thumb
innervation: anterior interosseous nerve (branch of median nerve)
action: thumb flexion

22
Q

Pronator quadratus

A

proximal attachment: distal ulna
distal attachement: distal radius
enervation: anterior interosseous nerve (branch of median nerve)
action: pronate forearm

23
Q

muscles in the Superficial layer of extensor region

A
  • brachioradialis
  • extensor carpi radialis longus and brevis
  • extensor digitorum
  • extensor digiti minimi
  • extensor carpi ulnaris
24
Q

muscles in the Deep layer of extensor region

A
  • supinator
  • extensor pollicis longus
  • extensor pollicis brevis
  • adbuctor pollicis longus
  • extensor indicis
25
Q

Brachioradialis

A

Proximal attachment: lateral supracondylar ridge of humerus
Distal attachment: styloid process of ulna
Innervation: radial
Action: weak flexion of elbow joint

26
Q

Extensor carpi radialis longus and brevis

A

Proximal attachment: lateral supracondylar ridge of humerus (longus) and lateral epicondyle (Brevis)
Distal attachment: base of 2nd (longus) and 3rd (brevis) metacarpal
Innervation: radial
Action: extend and abduct wrist joint

27
Q

Extensor Digitorum

A

Proximal attachment: lateral epicondyle of humerus
Distal attachment: extensor expansion of the medial 4 fingers (2-5)
Innervation: posterior interosseous nerve (branch of radial nerve)
Action: extends 2nd, 3rd, and 4th fingers

28
Q

Extensor digiti minimi

A

Proximal attachment: lateral epicondyle (common belly with extensor digitorum)
Distal attachment: extensor expansion of 5th finger (pinky)
Innervation: posterior interosseous nerve (branch of radial nerve)
Action: extends wrist joint, extends 5th fingers

29
Q

Extensor carpi ulnaris

A

Proximal attachment: lateral epicondyle of humerus
Distal attachment: base of 5th metacarpal
Innervation: posterior interosseous nerve (branch of radial nerve)
Action: extends and adducts hand

30
Q

Supinator

A
  • short shiny muscle with diagonally running fibers
    Proximal attachment: lateral epicondyle of humerus
    Distal attachment: proximal radius
    Innervation: radial
    Action: supinates forearm
    Silvery shine.
31
Q

Extensor pollic(K)is longus

A

Proximal attachment: ulna, IM
Distal attachment: base of distal phalanx of thumb
Innervation: posterior interosseous nerve (branch of radial nerve)
Action: extends distal phalanx of thumb

32
Q

Extensor pollic(K)is brevis

A

Proximal attachment: distal radius, IM
Distal attachment: Base of proximal phalanx of thumb
Innervation: posterior interosseous nerve (branch of radial nerve)
Action: extends proximal phalanx of thumbs

33
Q

Abductor pollic(K)is longus

A

Proximal attachment: ulna, radius, interosseous membrane
Distal attachment: base of 1st metacarpal
Innervation: posterior interosseous nerve (branch of radial nerve)
Action: abduct thumb
Brevis sandwich “between two longus”

34
Q

Extensor indic(K)is

A

Proximal attachment: distal ulna, interosseous membrane
Distal attachment: extensor expansion of 2nd membrane
Innervation: posterior interosseous nerve (branch of radial nerve)
Action: extends 2nd finger

35
Q

Median nerve

A
  • major nerve of anterior forearm
  • lies medial to brachial artery in cubital fossa
  • travers carpal tunnel
  • major branch: Anterior interosseous nerve
36
Q

Ulnar nerve

A
  • passes posterior to medial epicondyle
  • cutaneous branch to media side of hand
37
Q

What are the major branches of the radial nerve?

A
  • posterior
  • medial
  • lateral cutaneous nerve of forearm
38
Q

What are the superficial and deep branches of the radial nerve?

A
  • posterior interosseous nerve
39
Q

What is the major branch of the median nerve?

A

anterior interosseous nerve

40
Q

MCV (superficial vein)

A

medial cubical vein.
can be damaged by multiple attempts of of blood draw.

41
Q

All flexors are supplied by what nerve except for

A

flexor carpi ulnaris
by the ulnar nerve

42
Q

How do you find the muscle ?

A

check from the tendons. this applies to mostly all except for the thumb

43
Q

Important landmark for catheterization?

A

Anatomical snuff box

44
Q

Extensor supplying

A

radial nerve

45
Q

Tennis elbow

A

Lateral epicondylitis. too much flexion

46
Q

Mallet finger

A

common with basketball/baseball

47
Q

Carpal tunnel

A

median nerve is compress at the wrist, resulting in numbness or pain

summer 24 (17 decks)

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