Anatomy of the forearm Flashcards Preview

Module 204 Theme 2 > Anatomy of the forearm > Flashcards

Flashcards in Anatomy of the forearm Deck (57):
1

Name the skeletal components of the forearm

Radius - head, radial tuberosity, styloid process of the radius
Ulnar - Olecranon, trochlea notch, ulna notch, styloid process the ulna

2

What is between the radius and ulnar?

Interosseous membrane

3

What type of joint is the elbow joint?

Synovial hinge joint

4

What movement does the forearm do?

Flexion/extension

5

What does the head of the radius articulate with?

Capitulum

6

What type of joint is the radioulnar joint?

Pivot joint

7

What movement does the radioulnar joint do?

Supination/pronation

8

What is the function of ligaments?

Stabilise/strengthen the joint

9

List some ligaments

Radial collateral ligament
Ulnar collateral ligament
Annular ligament

10

What is the cubital fossa?

Triangle region over the anterior elbow

11

Where is the cubital fossa located?

Lateral epicondyle
Medial epicondyle
Point where pronator teres crosses with brachioradialis

12

Which tendon passes through the cubital fossa?

Biceps tendon

13

Which nerves pass through the cubital fossa

Lateral cutaneous nerve to forearm
Median nerve

14

What is the median cubital vein important for?

Venepuncture

15

Where is the median cubital vein?

Between the basilic and cephalic vein

16

Name the two compartments of the forearm

Flexor compartments
Extensor compartments

17

What do the long tendons of the forearm enter?

The hand

18

Where do the superficial and intermediate muscles of the hand originate?

From common flexor origin

19

What is golfers elbow?

Epicondylitis at CFO (tendon inflammation due to overuse/excessive gripping)

20

Name the superficial muscles of the anterior forearm

Pronator teres
Flexor carpi radialis
Palmaris longus
Flexor carpi ulnaris

21

Where is the common flexor origin?

Medial epicondyle

22

Name the intermediate muscles of the forearm

Flexor digitorum superficialis

23

Name the deep muscles of the anterior forearm

Flexor digitorum profundus
Pronator quadratus
Flexor pollicis longus

24

Where is the extensor compartment of the forearm?

Posterior forearm

25

List the superficial muscles of the posterior forearm

Extensor carpi radialis longs/brevis
Extensor digitorum
Extensor digiti minimi
Extensor carpi ulnaris

26

What is tennis elbow?

Epicondylitis at CEO (tendon inflammation due to overuse/forceful extension)

27

What does anconeus do?

stabilises elbow

28

What does brachioradialis ?

Flexor when half protonated

29

List the deep muscles of the posterior forearm

Supinator
Abductor pollicis longus
Extensor pollicis brevis
Extensor pollicis longus
Extensor indicis

30

Which 3 muscles form the anatomical snuffbox?

Abductor pollicis longus
Extensor pollicis brevis
Extensor pollicis longus

31

Which muscles perform wrist abduction and adduction?

Carpi muscles

32

Which muscles perform wrist abduction?

- Flexor carpi radialis
- Extensor carpi radialis (longus + brevis)

33

Which muscles perform wrist adduction?

- Flexor carpi ulnaris
- Extensor carpi ulnaris

34

What do the deep muscles of the posterior forearm do?

Together muscles splint the wrist to allow fine movements of the hand

35

List the muscles involved in supination

Biceps brachii
Supinator

36

List the muscles involved in pronation

Pronator teres
Pronator quadratus

37

Describe the movement of the radius and ulna during pronation

Radius rotates over the ulna

38

What is the carpal tunnel?

Tunnel for flexor tendons to digits and median nerve

39

What is the function of the flexor retinaculum?

Prevents bowing of tendons

40

What does the carpal tunnel contain?

Median nerve
Flexor policis longus
Flexor digitorum superficialis
Flexor digitorum superficialis

41

What is carpal tunnel syndrome?

– median nerve compression
(Due to increased pressure in carpal tunnel – associated with trauma, obesity, pregnancy)

42

What is the function of the flexor retinaculum

- Prevents bowing of tendons
- Separates tendons into compartments

43

Where does the extensor digitorum insert?

Into middle and distal phalanx

44

Where does the flexor digitorum insert?

Into distal phalanx

45

Where does the flexor digitorum superficialis insert?

Into middle phalanx

46

Where does the brachial artery divide?

Radial artery
Ulnar artery

47

Which muscle overlies radial artery?

Brachioradialis

48

Which muscle overlies ulnar artery

- Under flexor carpi ulnaris
- Gives off common interosseous

49

Describe the nerve supply to the forearm

Musculocutaneous nerve
Radial nerve
Median nerve
Ulnar nerve

50

Describe the location of the median nerve

Lies mid forearm between FDS and FDP

Branch - Anterior interosseous nerve
(to deep flexor muscles)

Passes through carpal tunnel

51

What is the function of the median nerve?

Motor supply to anterior compartment except FCU/medial part of FDP
Sensory supply to lateral palm + d1, d2, d3, ½ d4

52

What is the function of the ulnar nerve?

Motor supply to FCU and medial part FDP
Sensory supply to medial hand including ½ d4 + d5

53

What is the clinical significance of the ulnar nerve?

Cubital tunnel syndrome

54

Give the location of the radial nerve

Enters forearm on lateral side under brachioradialis

55

Name and describe the branches of the radial nerve

Superficial branch (sensory)
Under brachioradialis
Winds round to dorsum of hand

Deep branch - posterior interosseous nerve (motor)
Passes through supinator muscle
Enters extensor compartment

56

What is the function of the radial nerve?

Deep branch supplies posterior compartment
Superficial branch supplies lat dorsum hand

57

Give the clinical significance of the radial nerve

Wrist drop