WEEK 3 ARM

Question 1

What determines the “arm region”?

Answer 1

Deltoid to elbow

Question 2

What is the cubital fossa?

Answer 2

Space on elbow (like axilla)

Question 3

What is the name of the distinct groove between deltoid and pec region?

Answer 3

Deltopectoral groove (houses cephalic vein)

Question 4

Arm is organized into what two compartments?

Answer 4

1) Anterior flexor compartment

2) Posterior extensor compartment (triceps)

Question 5

Biceps brachii has how many heads? Which one is longer?

Answer 5

2, same length

Question 6

How can you orient the biceps brachii heads on a donor?

Answer 6

Remember that Long is Lateral

Question 7

Where are neurovascular bundles contained in the arm?

Answer 7

Medial aspect with fascia separations for protection

Question 8

What is the biceps aponeurosis?

Answer 8

Tendinous sheet that wraps around the fascia on the medial aspect of forearm

Question 9

What is the Biceps tendon used for?

Answer 9

Deep tendon reflex to confirm integrity of spinal chord (C5-C6 musculocutaneous nerve)
Does NOT test distal. No response means leasion or disease.

Question 10

What is the primary flexor of arm?

Answer 10

Brachialis! (NOT biceps brachii)

Question 11

What are the muscles deep to bicepsbrachii?

Answer 11

Coracobrachialis and brachialis

Question 12

Brachialis artery bifurcates where?

Answer 12

At the cubital fossa

Question 13

What does the brachialis artery bifurcate into?

Answer 13

Radial and ulnar arteries

Question 14

Deep brachial artery comes off of the?

Answer 14

The brachial artery just past the teres major, goes posterior to supply blood to triceps

Question 15

The brachial vein is deep or superficial?

Answer 15

deep

Question 16

The cephalic and basilic vein is deep or superficial?

Answer 16

Superficial

Question 17

What is the median cubital vein?

Answer 17

Forms a tributary between basilic and cephalic veins in cubital fossa

Question 18

Musculocutaneous nerve contains fibers from?

Answer 18

C5-C6

Question 19

Where is musculocutaneous nerve located?

Answer 19

Pierces corobrachialis and between biceps brachii and brachialis

Question 20

Musculocutaneous nerve is all motor of the arm UNTIL?

Answer 20

It emerges lateral of cubital fossa, becomes lateral cutaneous nerve of forearm to carry sensation from lateral aspect of forearm

Question 21

Radial nerve is all motor in triceps of arm until?

Answer 21

Has sensory branches in posterior arm/forearm and has a lot of sensation in hand

Question 22

What is the superior border of cubital fossa?

Answer 22

Medial and lateral epicondyles

Question 23

What is the medial border of cubital fossa?

Answer 23

Common forearm flexor attachment (pronator teres)

Question 24

What is the lateral border of cubital fossa?

Answer 24

Forearm extensor attachment (brachioradialis)

Question 25

What all can you see in cubital fossa?

Answer 25

Median cubital vein, median nerve, brachial artery, deep branch of radial nerve, biceps brachii tendon

Question 26

Medial aspect =

Answer 26

Flexor

Question 27

Lateral aspect=

Answer 27

Extensor

Question 28

Radial nerve runs=

Answer 28

Lateral of cubital fossa aka lateral epicondyle (deep=motor; superficial= sensory)

Question 29

Median nerve runs=

Answer 29

Medial epicondyle (so is brachial artery)

Question 30

Where is a good place to draw blood?

Answer 30

Median cubital vein bc it is superficial/safe, on top of fascia and bicipital aponeurosis