Question

12.	Which of the following statements accurately defines H zone?
A)	Muscles of the anterior forearm
B)	Large, deep muscle composed of two parts in the pelvis and proximal thigh
C)	The lighter region in the midsection of each A band that consists of thick filaments only
D)	Both A and C are correct

Answer 1

Question 12

Option A:- Incorrect

Reason:-The muscles of anterior forearm contain 4 layers: flexor carpi ulnaris, flexor carpi radialis, palmaris longus, and pronator teres.

Option B:- Incorrect

Reason:-The above statement has no correlation with the H -zone found in the sarcomere.

Option C:-Correct

Reason:- H zone is located in the middle of A band. It contains the only thick filaments and lacks actin filament. These are lighter in appearance under the microscope. A thin M line passes from the center of the H zone.

Option D:- Incorrect

Reason:- Only statement C defines the H zone most appropriately.