MEDICAL PHYSIOLOGY

PHYSIOLOGY

GENERAL PHYSIOLOGY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Match the description:Area exclusively containing actin, no myosin
A
H-Zone
B
I-band
C
A-band
D
O-band
Explanation: 

Detailed explanation-1: -I band is the region of actin filaments that are not superimposed by myosin filaments.

Detailed explanation-2: -The I bands contain only thin (actin) filaments, whereas the A bands contain thick (myosin) filaments.

Detailed explanation-3: -The Sarcomere: The Basic Contractile Unit of Muscle A sarcomere is the basic contractile unit of muscle fiber. Each sarcomere is composed of two main protein filaments-actin and myosin-which are the active structures responsible for muscular contraction.

Detailed explanation-4: -I bands (or isotropic bands): it is called the light band that contains only the thin filament (actin).

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