Upper limb

Question 1

What muscles in the forearm are considered to be flexors?

Answer 1

Pronator teres

Flexor carpi radialis

Palmaris longus

Flexor carpi ulnaris

Flexor digitorum superficialis

Flexor digitorum profundus

Flexor pollicis longus

Pronator quadratus

Question 2

If the midshaft of the humerus is broken what artery can be severed?

Answer 2

Deep brachial artery or Profunda brachii artery

wraps posteriorly or behind the humerus once the axilllary artery splits into the deep and brachial artery (anterior)

Question 3

Which two muscles allow for the flexion of the forearm?

Answer 3

Biceps Brachialis

Brachialis

Question 4

The ulnar collateral arteries are located?

Answer 4

Anterior (Inferior) and Posterior (Superior) to the medial epicondyle of the humerus.

Question 5

If the axillary nerve is severed what action cannot occur?

Answer 5

Abduction of the humerus as the deltoid and teres major are innervated by this nerve

Question 6

The median nerve innervates every flexor muscles in the forearm except?

Answer 6

Flexor carpi ulnaris

Innervated by the ulnar nerve

Question 7

What muscles make up the anterior compartment of the upper arm?

Answer 7

Brachialis (deep to the biceps brachi)

Biceps Brachi (long and short head)

Coracobrachialis

Question 8

What is the superior boundary of the cubital fossa?

Answer 8

An imaginary line connecting the medial and lateral epicondyles of the humerus

Question 9

What muscle flexes the Proximal interpharyngeal joint of 2-5?

Answer 9

Flexor digitorum superficialis

BYE BOY!!!

Question 10

What are the three named branches of the brachial artery?

Answer 10

Deep artery of the arm

Superior ulnar collateral artery

Inferior ulnar collateral artery

Question 11

If the humerus shatters distally what artery is damaged?

Answer 11

Brachial artery courses anteriorly

Question 12

What muscle is involved in flexing the Distal interphalangeal joints of 2-5?

Answer 12

Flexor digitorum profundus

ONE PUNCHHHHHH

Question 13

Name the three important structures in the cubital fossa

TAN

Answer 13

Biceps brachii Tendon

Brachial Artery

median Nerve

Question 14

What is the main artery supplying the upper limb with blood?

Answer 14

Subclavian artery

Question 15

If someone can no longer flex their forearm due to an injury which nerve was damaged?

Answer 15

Musclocutaneous nerve

Innervates the Biceps brachialis and the brachialis which flex the elbow

Question 16

What are the three origins of the triceps brachii?

Answer 16

Long head (infraglenoid tubercle of the scapula)

Medial head (posterior surface of the humerus)

Lateral head (Posterior surface of humerus)

Question 17

What is the floor of the cubital fossa?

Answer 17

Brachialis and the Supinator muscles (deep to Brachioradialis)

Question 18

What nerve innervates the triceps?

Answer 18

Radial nerve

Question 19

What are the distal attachments for the triceps brachii?

Answer 19

Olecranon process of the ulna

Question 20

What muscles in the forearm pronates the forearm?

Answer 20

Pronator teres

Pronator quadratus

Question 21

What muscle is involved in flexing the interphalangeal joint of the thumb?

Answer 21

Flexor pollicis longus

Question 22

What are the major named arteries found in the upper limb?

Answer 22

Subclavian (
Axillary (shoulder an

Brachial (begins at the inferior border of the teres major and ends at the level of the elbow by branching into the ulnar and radial artery)

Ulnar and Radial arteries

Question 23

What are the superficial flexor muscles of the forearm?

Answer 23

Pronator teres

Flexor carpi radialis

Palmaris longus

Flexor carpi ulnaris

Question 24

If the surgical neck of the humerus is severed what artery is most likely to be cut?

Answer 24

Posterior humeral circumflex artery

Question 25

The superior ulnar collateral artery courses distally with what nerve?

Answer 25

ulnar nerve

Question 26

What does the median nerve which passes through the cubital fossa innervate?

Answer 26

Muscles in the forearm that allow wrist flexion Some muscles of the hand especially the thumb

Question 27

What muscles in the flexor forearm muscles are innervated by the anterior interosseous branch of median nerve?

Answer 27

Flexor pollicis longus Pronator quadratus

Question 28

What muscles bound the cubital fossa?

Answer 28

**Brachioradialis muscles (laterally)** **Pronator teres muscle (medially)**

Question 29

What nerve innervates the muscles of the hand primarily?

Answer 29

Ulnar nerves

Question 30

What muscle makes up the posterior compartment of the upper arm?

Answer 30

Triceps brachii

Question 31

Where are the deep artery of the arm and radial nerve located?

Answer 31

Radial groove of the humerus Between the superior attachments of the medial and lateral heads of the triceps brachii muscle

Question 32

What is a high bifurcation ?

Answer 32

The brachial artery splits in the arm rather than in the cubital fossa Ulnar artery may course superficial to the superficial layer of flexor muscles and be mistaken for a vein. Drugs injected into the artery instead of the vein can have CATASTROPHIC CONSEQUENCES

Question 33

When you get to the deep muscles in the forearm which nerve is present?

Answer 33

Anterior interosseous branch of median nerve

Question 34

Why is the brachioradialis considered to be a posterior compartment muscle when it flexes the forearm?

Answer 34

It is innervated by the radial nerve and originates at the lateral supracondylar ridge of the humerus attaching to the radius distal end.

Question 35

Radial nerve and its branches

Answer 35

Radial nerve comes off of the posterior nerve Branches at the elbow into DEEP and SUPERFICIAL branches

Question 36

What is the route of the superficial branch of radial nerve?

Answer 36

The radial nerve travels between the brachialis and the brachioradialis and the superficial branch travels under the brachioradialis all the way to the wrist and dorsum of the hand

Question 37

What is the route of the deep nerve of radial nerve?

Answer 37

At the elbow, the radial nerve will split into Superficial and deep branches. The deep branch will enter the extensor compartment through the two heads of the supinator muscle and innervates the superficial and deep extensor muscles

Question 38

Which extensor muscles help with abduction?

Answer 38

Extensor carpi radialis longus and brevis

Question 39

Which muscle extends all of the fingers of the hand? Innervation?

Answer 39

Extensor digitorum and Extensor digiti minimi Posterior Interosseous nerve