Question:

Sliding filament theory can be best explained as

Updated On: Jul 20, 2024
  • actin and myosin filaments do not shorten but rather slide pass each other
  • when myofilaments slide pass each other, myosin filaments shorten while actin filaments do not shorten
  • when myofilaments slide pass each other actin filaments shorten while myosin filaments do not shorten
  • actin and myosin filaments shorten and slide pass each other.
Hide Solution
collegedunia
Verified By Collegedunia

The Correct Option is A

Solution and Explanation

According to sliding filament theory, muscle contraction is brought about by sarcomere contraction. This is result of sliding of actin and myosin filaments past each other leading to shortening of I band and disappearance of the H zone. Options B, C and D are incorrect as the sarcomere shortens while both the filaments remain the same length.
Was this answer helpful?
0
0

Concepts Used:

Locomotion and Movement

Locomotion

The movement of a creature from one place to another is known as locomotion. During the process, there is the action of appendages such as wings, limbs, and flagella. In some animals, like fish, whales, and sharks, locomotion upshots from a wave-like series of muscle contractions. Locomotion helps an organism in finding their food, avoid harsh weather conditions, escape from their predators, etc.

Some examples of locomotion are walking, running, swimming, etc. Movement, on the other hand, refers to any type of motion that need not be localized.

Read More: Locomotion and Movement

Movement 

Movement is generally described as a state of changing the position from rest to motion or vice-versa. Movement can be both voluntary movement and involuntary movement. Movement helps an organism perform essential functions, such as pumping blood to the different parts of the body, etc.

Read More: Difference between Locomotion and Movement