Arm and Forearm Flashcards Preview

Anatomy Cards with Pics > Arm and Forearm > Flashcards

Flashcards in Arm and Forearm Deck (51):
1

Q image thumb

A image thumb
2

Q image thumb

A image thumb
3

Q image thumb

A image thumb
4

Q image thumb

A image thumb
5

Q image thumb

A image thumb
6

Q image thumb

A image thumb
7

Q image thumb

A image thumb
8

Q image thumb

A image thumb
9

Q image thumb

A image thumb
10

Q image thumb

A image thumb
11

Q image thumb

A image thumb
12

Q image thumb

A image thumb
13

Name the arm flexor muscles. How many?

Three muscles (BBC)

  1. Biceps brachii (long and short head)
  2. Brachialis
  3. Coracobrachialis

14

Name the only arm extensor (posterior) muscle? What innervates it?

Triceps brachii (long, lateral, and medial)

Radial nerve (in radial groove) innervates it

15

Name the superficial flexor muscles of the forearm? How many?

What is their origin?

FOUR (P/F, P/F)

  1. Pronater Teres
  2. Flexor Carpi Radialis
  3. Palmaris Longus
  4. Flexor Carpi Ulnaris

Origin: Common flexor tendon at the medial epicondyle

 

16

Which muscle is absent in about 25% of people and used in autografts? What type of muscle is it?

Palmaris Longus - Superficial Forearm Flexor muscle

17

Name the only middle forearm flexor musle? 

Name its OINA

Flexor digitorum superficialis (TRICKY, superficialis is middle here)

O: common flexor tendon and radius at extensive origin (medial epicondyle)

Ins: middle phalanges at digits 2-5

Inn: Median nerve

A: Flexes hand and joints at digits 2-5

18

Latin Roots

1. Pollicis

2. Carpi

3. Digitorum

Pollicis = Thumb (thumbs up for politics)

Carpi = Wrist (Carpe Diem is risky)

Digitorum = Digit

19

Name the deep forearm flexor muscles

 

THREE

  1. Flexor pollicis longus
  2. Flexor digitorum profundas
  3. Pronater quadratus

20

Name the superficial forearm extensor muscles

What are the common origin, innervation, and action

SIX

Origin: Common exterior tendon at lateral epicondyle

Inn: Radial nerve

Action: Mostly extends wrist and digits

 

  1. Brachioradialis (Exception = NOT extensor, flexes forearm)
  2. Extensor Carpi radius longus
  3. Extensor Carpi radius brevis

  4. Extensor digitorum

  5. Extensor carpi ulnaris

  6. Extensor digiti minimi

21

Name the deep forearm extensor muscles

What are the common origins, innervations, and actions?

FIVE

  1. Supinator (Exception - flex forearm from common tendon)
  2. Extensor pollicis brevis
  3. Extensor pollicis longus
  4. Abductor pollicis longus
  5. Extensor indicis

O: Radius, ulna, and interosseous membrane

Inn: Posterior interosseous branch of the radial nerve

A: Mostly thumb related

 

22

What are the four major nerves of the upper extremity?

ALL from the ends of the brachial plexus

  1. Musculocutaneous nerve
  2. Radial nerve
  3. Median nerve
  4. Ulnar nerve

23

Forearm Supination

Biceps brachii (Major effect)

Supinator

24

Forearm Pronation

Pronator Teres

Pronator quadrates

25

Forearm Flexion

Biceps brachii

Brachialis

Brachioradialis

26

Arm Adduction

Coracobrachialis

27

Arm Flexion

Coracobrachialis

28

Arm Extension

Triceps brachii (Long head only)

29

Forearm Extension

Triceps brachii (Long, Lateral, and Medial)

30

Hand Flexion

Flexor carpi radialis

Palmaris longus

Flexor carpi ulnaris

Flexor digitorum superficialis

Flexor digitorum profundus

31

Hand Extension

Extensor carpi radialis longus (at wrist)

Extensor carpi radialis brevis (at wrist)

Extensor digitorum (at wrist)

Extensor carpi ulnaris (at wrist)

32

Hand Abduction

Flexor carpi radialis

Extensor carpi radialis longus (at wrist)

Extensor carpi radialis brevis (at wrist)

33

Hand Adduction

Flexor carpi ulnaris

Extensor carpi ulnaris (at wrist)

34

MP/PIP joint Flexion

Flexor digitorum superficialis (MP/PIP joints of digits 2-5)

Flexor pollicis longus (MP/IP joints of thumb)

Flexor digitorum profundus (MP/DIP joints of digits 2-5)

35

Little Finger Extension

Extensor digiti minimi

36

Thumb Abduction

Abductor pollicis longus

37

Thumb Extension

Extensor pollicis brevis

Extensor pollicis longus

38

Index Finger Extension

Extensor indicis

39

Digits 2-5 Extension

Extensor digitorum

40

Musculocutaneous nerve

  1. What does it become and where?
  2. What does it pierce?
  3. What does it innervate?
  4. What action does it affect?

Q image thumb

  1. Lateral antebrachial cutaneous nerve at elbow
  2. Pierces coracobrachialis
  3. Innervates skin of anterolateral forearm & ALL anterior arm muscles
  4. arm flexion & supination

A image thumb
41

Radial nerve

  1. What does it become and where?
  2. What does it pierce?
  3. What does it innervate?
  4. What action does it affect?

Q image thumb

1. posterior interosseous nerve (for deep forearm extensor muscles)

2. Pierces supinator 

3. ALL Posterior parts (arm skin, arm muscles, forearm muscles

4. Extension and abduction mostly (forearm, wrist, digits)

A image thumb
42

Median Nerve

What does it become and where?
What does it pierce?
What does it innervate?
What action does it affect?

  1. anterior interosseous nerve (for the deep flexor muscles)
  2. None
  3. Almost ALL Anterior Forearm muscles (except flexor carpi ulnaris)
  4. Flexion of hand/joints, Pronation of forearm

A image thumb
43

Ulnar nerve

What does it become and where?
What does it pierce?
What does it innervate?
What action does it affect?

  1. dorsal cutaneous branch (to medial dorsal hand/palm)
  2. None
  3. 2 nerves only: flexor carpi ulnaris and flexor digitorum profundas (medial half). skin of palm/hand
  4. Flexion of hand and joints

A image thumb
44

Describe the branching of the axillary artery and where it changes names

Q image thumb

Axillary to brachial @ teres major

Brachial to radial/ulnar arteries at elbow

Radial artery deep to brachioradialis muscle, next to flexor carpi radialis 

Ulnar artery deep to pronater muscle, next to ulnar nerve

A image thumb
45

What two branches does the ulnar artery become?

anterior interosseus artery and posterior interosseous artery

46

Describe the path of the superficial veins

Q image thumb

Basilic venous system: Medial

Cephalic venous system: Lateral

Median cubital vein connects them

A image thumb
47

What are the venae comitantes?

Deep veins that follow the deep arteries

48

Cubital Fossa

  1. Where is it?
  2. Boundaries
  3. Superficial structures
  4. Deep structures

  1. Triangular region in front of elbow
  2. Lateral-Medial Line of Epicondytes, Brachioradialis (Lateral), Pronater Teres (Medial)
  3. Bicipital Aponeurosis (white fibrous tissue), median cubital vein
  4. Biceps Tendon, Brachial Artery, Median Nerve (TAN)

A image thumb
49

Anatomical Snuff Box

  1. Where is it?
  2. Boundaries, what innervates these?
  3. Superficial structures
  4. Deep structures

  1. triangle shaped depression near thumb
  2. Anterior: abductor pollicis longus/extensor pollicis brevis, Lateral: extensor pollicis longus, Floor: Scaphoid Bone: All muscles innervated by the radial nerve
  3. radial nerve
  4. radial artery 

A image thumb
50

Which nerve travels between the two heads of the pronater teres?

Median nerve

51

Which nerve innervates the pronater quadratus

Anterior interosseous branch of the median nerve (deep flexor muscle)