Arm and forearm

Question 1

Anterior compartment of arm - nerve supply

Answer 1

Musculocutaneous nerve

Question 2

Anterior compartment of arm - arterial supply

Answer 2

Brachial artery

Question 3

Anterior compartment of arm - venous drainage

Answer 3

Cephalic vein (lateral aspects) 
Basilic vein (medial aspects)

Question 4

Anterior compartment of arm - muscles (3)

Answer 4

BBC
Biceps brachi
Brachialis
Coracobrachialis

Question 5

Anterior compartment of arm - biceps brachii location

Answer 5

Most anteriorly positioned

Question 6

Anterior compartment of arm - biceps brachii function

Answer 6

Flex elbow joint
Flex shoulder joint
Supinates forearm

Question 7

Anterior compartment of arm - coracobrachialis location

Answer 7

Deep to biceps brachii
Medial to brachialis
More superior

Question 8

Anterior compartment of arm - coracobrachialis function

Answer 8

Flexion and adduction of shoulder

Question 9

Anterior compartment of arm - brachialis location

Answer 9

Deep to biceps brachii

Lateral to coracobrachialis

Question 10

Anterior compartment of arm - brachial function

Answer 10

Flexion of elbow

Question 11

Posterior compartment of arm - muscles (1)

Answer 11

Triceps brachii
(long head, lateral head, medial head)

Question 12

Posterior compartment of arm - triceps brachii function

Answer 12

Extension of the arm (at shoulder joint)

Extension of the forearm (at elbow joint)

Question 13

Posterior compartment of arm - nerve supply

Answer 13

Radial nerve

Axillary nerve - supplies sensory innervation to badge patch area (lateral aspect of arm)

Question 14

Posterior compartment of arm - arterial supply

Answer 14

Ulnar artery branch - Posterior interosseous artery

Question 15

Cubital fossa - definition

Answer 15

Triangular depression on the anterior surface of the elbow

Question 16

Cubital fossa - boundaries

Answer 16

Superiorly - imaginary line connecting medial and lateral epicondyles 
Medially - pronator teres
Laterally - brachioradialis
Floor - brachialis 
Roof - bicipital aponeurosis

Question 17

Cubital fossa - superficial contents

Answer 17

Median cubital vein
Cephalic vein
Basilic vein

Question 18

Cubital fossa - deep contents

Answer 18

Median nerve
Brachial artery
Radial nerve

Question 19

Which veins are commonly used for venipuncture and cannulation?

Answer 19

Cephalic vein

Basilica vein

Question 20

Name 2 elbow joints

Answer 20

Humero-ulnar joint

Radio-capitellar joint

Question 21

Anterior compartment of the forearm - nerve supply

Answer 21

Median nerve - majority

Ulnar nerve - flexor carpi ulnaris, medial half of flexor digitorum profundus (ring finger and little finger)

Question 22

Anterior compartment of the forearm - movements

Answer 22

Flexion of wrist and digits

Pronation, abduction and adduction of wrist

Question 23

Anterior compartment of the forearm - how many layers of muscles?

Answer 23

3 layers
Layer 1 (superficial muscles)
Layer 2 (intermediate muscles)
Layer 3 (deep muscles)

Question 24

Anterior compartment of the forearm - superficial muscles (layer 1) (4)

Answer 24

From medial to lateral:  
Flexor carpi ulnaris 
Palmaris longus 
Flexor carpi radialis
Pronator teres

Question 25

Anterior compartment of the forearm - superficial muscles (layer 1) - which of these muscles do some people not have?

Answer 25

Palmaris longus

Question 26

Anterior compartment of the forearm - superficial muscles (layer 1) pronator teres function

Answer 26

Pronation of forearm

Question 27

Anterior compartment of the forearm - superficial muscles (layer 1) palmaris longus function

Answer 27

Flexion at wrist

Question 28

Anterior compartment of the forearm - superficial muscles (layer 1) flexor carpi radialis function

Answer 28

Flexion and abduction at wrist

Question 29

Anterior compartment of the forearm - superficial muscles (layer 1) flexor carpi ulnaris function

Answer 29

Flexion and adduction at wrist

Question 30

Anterior compartment of the forearm - intermediate muscles (layer 2) (1)

Answer 30

Flexor digitorum superficialis (splits into 4 tendons at the wrist)

Question 31

Anterior compartment of the forearm - intermediate muscles (layer 2) flexor digitorum superficialis

Answer 31

Flexes MCP and PIP joints in fingers | Flexes wrist

Question 32

Anterior compartment of the forearm - deep muscles (layer 3) (3)

Answer 32

Flexor digitorum profundus Flexor pollicis longus Pronator quadratus

Question 33

Anterior compartment of the forearm - deep muscles (layer 3) flexor digitorum profundus

Answer 33

Splits into 4 tendons at wrist | Flexion of DIP and MCP joints

Question 34

Anterior compartment of the forearm - deep muscles (layer 3) flexor policies longus

Answer 34

Lateral to FDP | Flexion of thumb

Question 35

Anterior compartment of the forearm - deep muscles (layer 3) pronator quadratus

Answer 35

Pronation of forearm

Question 36

Posterior compartment of the forearm - superficial muscles (5)

Answer 36

``` Brachioradialis Extensor carpi ulnaris Extensor carpi radialis Extensor digitorum Extensor digiti minimi ```

Question 37

Posterior compartment of the forearm - deep muscles (5)

Answer 37

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

Question 38

Posterior compartment of the forearm - overall function

Answer 38

Extension of wrist and fingers

Question 39

Posterior compartment of the forearm - nerve supply

Answer 39

Radial nerve

Question 40

Posterior compartment of the forearm - superficial muscles - brachioradialis

Answer 40

Flexion of elbow (doesn't fit the extension rule)

Question 41

Posterior compartment of the forearm - superficial muscles - extensor carpi radialis

Answer 41

extension and abduction of wrist

Question 42

Posterior compartment of the forearm - superficial muscles - extensor carpi ulnaris

Answer 42

Extension and adduction of wrist

Question 43

Posterior compartment of the forearm - superficial muscles - extensor digitorum

Answer 43

Splits into 4 | Extensor of fingers (not thumb)

Question 44

Posterior compartment of the forearm - superficial muscles - extensor digit minimi

Answer 44

Extension of little finger

Question 45

Posterior compartment of the forearm - deep muscles - supinator

Answer 45

Supinates forearm

Question 46

Posterior compartment of the forearm - deep muscles - abductor policis longus

Answer 46

Abduction of thumb | Nerve supply: posterior interosseous branch of radial nerve

Question 47

Posterior compartment of the forearm - deep muscles - extensor policies longs and brevis

Answer 47

Extension of thumb | Nerve supply: posterior interosseous branch of radial nerve

Question 48

Posterior compartment of the forearm - deep muscles - extensor indices

Answer 48

Extends index finger | Nerve supply: posterior interosseous branch of radial nerve

Question 49

Extensor retinaculum

Answer 49

Thickened part of the antebrachial (deep) fascia that holds the tendons of the extensor muscles in space. It is located on the posterior aspect of the forearm, just proximal to the hand

Question 50

Flexor retinaculum

Answer 50

The antebrachial (deep) fascia of the anterior forearm which attaches to the scaphoid/trapezium laterally and the pisiform/hamate medially.

Question 51

Flexor retinaculum - function

Answer 51

Prevents bowstring of the tendons during flexion, which would reduce muscle efficiency