The Arm and Forearm Misc.

Question 1

What is longer, the radius or ulna?

Answer 1

Ulna

Question 2

What are the anterior and posterior processes of the proximal end of the ulna?

Answer 2

Posterior- olecranon Anterior- Coronoid

Question 3

What are the distal processes of the ulna and radius?

Answer 3

Styloid processes

Question 4

What would you worry about with a fracture of the olecranon?

Answer 4

The Ulnar Nerve

Question 5

What happens in a Colle’s Fracture?

Answer 5

A distal fracture of the radius and avulsion of the ulnar styloid process. dinner fork. when stopping a fall

Question 6

What happens in a Monteggia fracture

Answer 6

Proximal fracture of the ulna, just below the elbow accompanied by a dislocation of the radius from the annular ligament

Question 7

What keeps the proximal head of the radius in place against the ulna?

Answer 7

Annular Ligament

Question 8

Name the elbow joint ligaments

Answer 8

Radial Collateral ligament and the ulnar collateral ligament

Question 9

What do the radius and ulna articulate with in the elbow?

Answer 9

The radial head articulates with the trochlea and the ulna articulates with the capitulum

Question 10

At which joint do the ulna and radius have a common capsule and at which joint do they have their own capsule?

Answer 10

Common at elbow joint, separate at wrist.

Question 11

What happens in tennis elbow?

Answer 11

Overuse of extension forearm extension muscles that causes inflammation of periosteum of the lateral epicondyle.

Question 12

What are the muscles in the anterior compartment of the arm?

Answer 12

(Flexor) Biceps Brachi, Brachialis, Coracobrachialis

Question 13

What are the muscle sin the posterior compartment of the arm?

Answer 13

(Extensor) Triceps Brachii and Anconeus

Question 14

Where do the long and short head of the biceps originate?

Answer 14

Long head on the superior glenoid and the short head on the carocoid process

Question 15

Where do the biceps muscles insert?

Answer 15

the radial tuberosity

Question 16

what head of the triceps is involved in extension of the shoulder?

Answer 16

Long Head of the biceps which inserts just inferior of the scapula

Question 17

Which muscle does the musculoskeletal nerve pierce?

Answer 17

The coracobrachialis

Question 18

After innervating the three flexor muscles, what does the musculocutaneous nerve turn into and what are its branches

Answer 18

The Lateral Antebrachial cutaneous nerve with anterior and posterior branches

Question 19

Where do the triceps muscles insert?

Answer 19

The olecranon process of the ulna

Question 20

Which muscles in the anterior compartment of the forearm cross the elbow joint?

Answer 20

Superficial and intermediate

Question 21

What travels between the two heads of the pronator teres?

Answer 21

The median Nerve

Question 22

What are the only two muscles in the anterior compartment of the forearm that are not innervated by the median nerve? What are they innervated by?

Answer 22

Flexor carpi ulnaris and the medial half of the flecor digitorum profundus are both innervated by the ulnar nerve.

Question 23

What travels between the two head of the flexor carpi ulnaris?

Answer 23

The Ulnar Nerve

Question 24

What muscles does the anterior interosseus nerve innervate

Answer 24

flexor pollicus longus, pronator quadratus, and flexor digitorum profundus (lateral half).

Question 25

What is most powerful supinator when the elbow is flexed? extended?

Answer 25

Flexed- Biceps Brachii Extended- Supinator

Question 26

What passes through the two heads of the supinator and what does it become on the otherside

Answer 26

The radial nerve becomes the posterior interosseous nerve after passing through the supinator.

Question 27

What are the two veins that make a V in your elbow?

Answer 27

Medially- the median cubital vein laterally the cephalic vein

Question 28

What does the radial head articulate with?

Answer 28

Laterally it articulates with the capitulum, and medially with the radial notch of the ulna

Question 29

Describe the articulations of the distal end of the radius.

Answer 29

it articulates with the ulna on the medial side via the ulnar notch. It articulates with the scaphoid and the lunate via its styloid process

Question 30

What separates the ulna from the carpal bones and connects the radius and ulna distally ?

Answer 30

The triangular fibrocartilage ligament

Question 31

What type of elbow dislocation happens in children commonly?

Answer 31

Posterior dislocation of the elbow join in which the humoral head is force anteriorly and the radius and ulna are dislocated posteriorly. often the UCL is torn and the head of the radius is fractured.

Question 32

What is the only pure flexor of the arm

Answer 32

brachialis

Question 33

Where does the long head of the triceps originate?

Answer 33

Scapula

Question 34

What is the only muscle in the posterior compartment of the arm that is a flexor?

Answer 34

Brachioradialis