Anatomy - Anterior Forearm

Question 1

Where do the superficial muscles in the anterior compartment of the forearm originate from?

Answer 1

The common tendon which arises from the medial epicondyle of the humerus.

Question 2

What nerve innervates flexor carpi ulnaris?

Answer 2

Ulnar nerve (C8-T1).

Question 3

What is the action of flexor carpi ulnaris?

Answer 3

Flexion and adduction at the wrist.

Question 4

What nerve innervates palmaris longus?

Answer 4

Median nerve (C6-T1).

Question 5

What is the action of palmaris longus?

Answer 5

Flexion at the wrist.

Question 6

What nerve innervates flexor carpi radialis?

Answer 6

Median nerve (C6-T1).

Question 7

What is the action of flexor carpi radialis?

Answer 7

Flexion and abduction at the wrist.

Question 8

What nerve innervates pronator teres?

Answer 8

Median nerve (C6-T1).

Question 9

What is the action of pronator teres?

Answer 9

Pronation of the forearm.

Question 10

What nerve innervates brachioradialis?

Answer 10

Radial nerve (C5-T1).

Question 11

What is the action of brachioradialis?

Answer 11

Flexion of the elbow.

Question 12

What artery is the brachial artery a continuation of?

Answer 12

The axillary artery.

Question 13

What arteries does the brachial artery branch into?

Answer 13

The radial and ulnar arteries.

Question 14

Name 3 deep muscles in the anterior compartment of the forearm.

Answer 14

1. Flexor digitorum profundus. 2. Flexor pollicis longus. 3. Pronator quadratus.

Question 15

What bone does flexor digitorum profundus originate from?

Answer 15

The ulna bone.

Question 16

What is the innervation to flexor digitorum profundus?

Answer 16

• Medial half (little and ring fingers) - ulnar nerve. - Lateral half (middle and index fingers) - median nerve.

Question 17

What is the action of flexor digitorum profundus?

Answer 17

It flexes the interphalangeal joints and the metacarphophalangeal joints.

Question 18

What bone does flexor pollicis longus originate from?

Answer 18

The anterius radius.

Question 19

What is the insertion of flexor pollicis longus?

Answer 19

The thumb.

Question 20

What is the innervation of flexor pollicis longus?

Answer 20

Median nerve.

Question 21

What is the action of flexor pollicis longus?

Answer 21

It flexes the interphalangeal joints and the metacarphophalangeal joints of the thumb.

Question 22

What is the action of pronator quadratus?

Answer 22

It pronates the forearm.

Question 23

Name 3 forearm muscles that are not supplied with the median nerve.

Answer 23

1. Flexor carpi ulnaris. 2. The medial half of flexor digitorum profundus. 3. Brachioradialis.

Question 24

Answer 24

Question 25

Answer 25

Question 26

Answer 26

Question 27

Answer 27

Question 28

Answer 28

Question 29

What is the common flexor origin?

Answer 29

Medial epicondyle of the humerus. Where the superficial anterior forearm muscles originate.

Question 30

Which muscles in the forearm are supplied by the ulnar nerve?

Answer 30

• Flexor carpi ulnaris. - Medial flexor digitorum profundus.

Question 31

Define pronation.

Answer 31

Turning the hand so the palm is facing down.

Question 32

Define supination.

Answer 32

Turning the hand so the palm is facing up.

Question 33

Which muscles are responsible for pronation?

Answer 33

Pronator teres and pronator quadratus.