Arm

Question 0

What are the flexors of the arm?

Answer 0

biceps brachii, brachialis, and coracobrachialis

Question 1

What are the four muscles of the arm?

Answer 1

biceps brachii, brachialis, coracobrachialis, and triceps brachii

Question 2

As elbow flexion approaches 90 degrees, the biceps with the forearm in supination produces _____, but with the forearm in pronation produces ______

Answer 2

flexion; supination

Question 3

What is the only pure elbow flexor muscle?

Answer 3

brachialis

Question 4

The musculotaneous nerve pierces what muscle?

Answer 4

coracobrachialis

Question 5

What muscle is the chief extensor of the elbow?

Answer 5

triceps brachii

Question 6

What provides the main arterial supply to the arm?

Answer 6

brachial artery

Question 7

Where does the brachial artery begin and end?

Answer 7

begins at inferior border of the teres major and ends in the cubital fossa opposite the neck of the radius under the bicipital aponeurosis

Question 8

The brachial artery divides into what?

Answer 8

radial and ulnar arteries

Question 9

What are the main branches from the medial aspect of the brachial artery?

Answer 9

profunda brachii artery and the superior and inferior ulnar collateral arteries

Question 10

What are the main superficial veins of the arm?

Answer 10

cephalic and basilic vein

Question 11

What are the main nerves of the arm?

Answer 11

radial, ulnar, median, and musculotaneous

Question 12

What forms the median nerve?

Answer 12

union of medial and lateral roots from the medial and lateral cords of the brachial plexus, respectively

Question 13

TRUE or FALSE?

The median and ulnar nerves supply no branches to the arm

Answer 13

true

Question 14

From where does the ulnar nerve arise?

Answer 14

medial cord of the brachial plexus

Question 15

From where does the musculotaneous nerve arise?

Answer 15

lateral cord of the brachial plexus

Question 16

What does the musculocutaneous nerve innervate?

Answer 16

biceps brachii, brachialis, and coracobrachialis

Question 17

What does the radial nerve innervate?

Answer 17

muscles in the posterior compartment of the arm and forearm and the overlying skin

Question 18

What is the cubital fossa?

Answer 18

shallow triangular depression on anterior elbow

Question 19

What is the superior boundary of the cubital fossa?

Answer 19

an imaginary line connecting the medial and lateral epicondyles

Question 20

What is the medial border of the cubital fossa?

Answer 20

the pronator teres

Question 21

What is the lateral border of the cubital fossa?

Answer 21

the brachioradialis

Question 22

What is the floor of the cubital fossa?

Answer 22

brachialis and supinator teres

Question 23

What is the roof of the cubital fossa?

Answer 23

continuity of brachial and antebrachial fascia, bicipital aponeurosis, subcutaneous tissue, and skin

Question 24

What are the contents of the cubital fossa?

Answer 24

terminal part of brachial artery and start of its terminal branches, radial and ulnar arteries, (deep) accompanying veins, biceps brachii tendon, median and radial nerve