Chapter 3B (The Arm)

Question 1

Innervated by the musculocutatneous nerve

Answer 1

• Biceps brachii
• Brachialis
• Coracobrachialis

Question 2

Biceps brachii

Answer 2

Long head assists with flexion, supination; short yead helps with stabilization of GH joint

Question 3

Brachialis

Answer 3

Main flexor of the forearm in all positions

Question 4

Coracobrachialis

Answer 4

Assists with flexion adduction, and stabilization of GH joint

Question 5

Innervated by the radial nerve

Answer 5

• Triceps brachii

- Anconeus

Question 6

Triceps brachii

Answer 6

Primary extension of forearm, long head helps stabilize the GH joint and extension/adduction; medial head is the primary forearm extensor; lateral head helps with activity against resistance

Question 7

Aconeus

Answer 7

Partially blends with the medial head of triceps, assists in extension of forearm

Question 8

(Brachial artery)
Begins at the inferior border of teres major and ends in the cubital fossa where it divides into the _____ and ______ ______

Answer 8

the radial and ulnar arteries

Question 9

(Brachial artery)

Branches

Answer 9

• Profunda brachii artery/deep artery of the arm
• Humeral nutrient artery
• Superior and inferior ulnar collateral artery

Question 10

(Brachial artery)

Collateral arteries help form the

Answer 10

peri-articular arterial anastomoses of the elbow region

Question 11

Superficial veins

Answer 11

• Cephalic vein

- Basilic vein

Question 12

Deep veins

Answer 12

Brachial vein - Begins at the below by the union of the ulnar and radial arteries and ends by merging with the basilic vein to form the axillary vein

Question 13

Temporary occlusion, compression, and resumption of blood flow in the brachial artery is the basis for ____ ____ ____ with a sphygmomanometer.

Answer 13

Measuring blood pressure

Question 14

When wrapping the securing the BP cuff centered over the ____ ____, the cuff is inflated to temporarily occlude flow through the artery

Answer 14

Brachial artery

Question 15

When gradually deflating, the first instance of sounds marks the ____ _____ ____

Answer 15

systolic blood pressure

Question 16

As the cuff is further deflated, the sound of turbulent flow from the brachial artery will remain audible until the artery is no longer compressed, marking the _____ ___ ____.

Answer 16

Diastolic blood pressure

Question 17

(Blood flow in brachial artery)

______ describes the stopping of bleeding through manual or surgical control of blood flow

Answer 17

Hemostasis

Question 18

The best place to compress the brachial artery to control the hemorrhage is …

Answer 18

medial to the humerus near the middle of the arm.

Question 19

The brachial artery may be clamped _____ to the origin of the profunda brachii of the arm without producing tissue damage

Answer 19

Distal

Question 20

Muscles and nerves can tolerate up to

Answer 20

6 hours of ischemia. Afterwards, fibrous scar tissue replaces necrotic tissue and causes muscles to shorten permanently causing flexion deformities.

Question 21

Ischemic compartment syndrome is also known as

Answer 21

Volkmann contracture

Question 22

The ___ ____ is the common site for sampling and transfusion of blood and intravenous (IV) injections because of the prominence and accessibility of veins

Answer 22

Cubital fossa - Median cubital vein