AFC Anatomy & Physiology for Aerial Fitness 2

Question 1

Which type of muscle contraction occurs when an aerial artist holds a static pose in the silks without moving?

Accepted Answer

Isometric

Answer

Isometric contractions occur when the muscle generates force without changing length, as when holding a static aerial position.

Question 2

The rotator cuff is composed of four muscles. Which of the following is NOT one of them?

Accepted Answer

Coracobrachialis

Answer

The rotator cuff consists of supraspinatus, infraspinatus, subscapularis, and teres minor — not the coracobrachialis.

Question 3

During an inverted aerial position, blood redistribution primarily increases venous return to the heart due to which force?

Accepted Answer

Gravity assisting venous flow toward the heart

Answer

In inversion, gravity assists venous blood flow from the lower extremities toward the heart, increasing venous return.

Question 4

Which vertebral region has the least range of motion in rotation, making it most vulnerable during aerial twisting movements?

Accepted Answer

Lumbar

Answer

The lumbar spine has the least rotational range of motion due to the orientation of its facet joints, increasing injury risk during twisting.

Question 5

The glenohumeral joint achieves its wide range of motion primarily because the glenoid fossa is:

Accepted Answer

Shallow and smaller than the humeral head

Answer

The glenoid fossa is shallow and covers only about one-third of the humeral head, sacrificing stability for mobility.

(AFC) Aerial Fitness Certification Practice Test