Radial Nerve Info And Path

Question 1

The radial nerve originates from the _____ cord of the brachial plexus

Answer 1

posterior

Question 2

The radial nerve innervates the ____ muscles of the arm and ___ muscles.(motor and sensory) It has TWO branches

Answer 2

Posterior (Extensor) muscles

forearm

Question 3

2. After coming from the posterior cord, the radial nerve travels where and with who?

Answer 3

Interior the posterior compartment of the upper arm with the deep brachial artery in radial groove.

Question 4

3. The radial nerve branches 3 ways. What are these nerves and where do they go?

Answer 4

1

Question 5

The radial nerve enters the arm by crossing what?

Answer 5

the inferior margin of teres minor

Question 6

The radial nerve lies posterior to which artery?

Answer 6

Brachial artery

Question 7

The radial nerve is accompanied by which artery as it enters the posterior compartment of the arm? What space does it go through?

Answer 7

Profunda brachii artery

Triangular interval

Question 8

As the radial nerve passes diagonally from medial to lateral, it lies on what?

Answer 8

Radial groove-directly on the bone.

Question 9

Under what muscle (on the ARM) could you find this nerve?

Answer 9

Lateral head of triceps.

Question 10

Once it passes to the lateral side of the arm, it goes through the what? From there it enters where?

Answer 10

Lateral intermuscular septum

The anterior compartment of the arm.

Question 11

In the anterior compartment of the arm, the radial nerve lies between which muscles?

Answer 11

The brachialis and the brachioradialis (posterior compartment forearm) muscle

Question 12

After passing between brachialis and brachioradialis, the radial nerve enters the forearm anterior to the ______ of the humerus, just deep to which muscle?

Answer 12

lateral Epicondyle

Brachioradialis

Question 13

The radial nerve has muscular branches that go to where?

Answer 13

Triceps brachii, brachioradialis, Extensor Carpi radialis longus, and the lateral part of brachialis.

Question 14

The radial nerve has cutaneous branches that originate in the ______ compartment of arm. These branches are?

Answer 14

inferior lateral cutaneous of arm

posterior cutaneous nerve of forearm.

Question 15

Both the inferior lateral cutaneous nerve of the arm and the posterior cutaneous nerve of the forearm pierce through the ______ of the ___ to become?

Answer 15

Lateral head of triceps brachii

Subcutaneous

Question 16

The radial nerve lies just under the lip of the ______ muscle in the cubital fossa

Answer 16

brachioradialis muscle

Question 17

While in the cubital fossa, the radial nerve divided into what?

Answer 17

superficial and deep branches

Question 18

The superficial branch of the radial nerve goes where?

Answer 18

into the forearm, just deep to the brachioradialis

Question 19

The deep branches of the radial nerve passes between where? where is it heading?

Answer 19

Both heads of the Supinator

the posterior compartment of the forearm

Question 20

The radial nerve becomes what after emerging from the Supinator muscle?

Answer 20

Posterior interosseous nerve

Question 21

After emerging from the _______ the deep branch of the radial nerve becomes the posterior interosseous nerve in the posterior compartment of the arm.

Answer 21

two heads of the Supinator.