AIIMS Biology Locomotion And Movement Class 11 Questions

During muscular contraction, which of the following events occur? (i) H⁻zone disappears (ii) A band widens (iii) I band reduces in width (iv) Width of A band is unaffected (v) M line and Z line come closer.

Skeletal muscles appear striated due to presence of two characteristic proteins in alternating dark and light bands. Which of the following is a correct match of the protein with its light refractive property and colour? Protein Colour Property

Which of the following is correct about the given figure?

The shoulder blade is made of

A cricket player is fast chasing a ball in the field. Which one of the following groups of bones are directly contributing in this movement?

Given diagram shows bone of the left human hindlimb as seen from front. It has certain mistakes in labeling. Two of the wrongly labeled bones are:

Which one of the following is a sesamoid bone?

If a stimulus, several times greater than the threshold stimulus is provided to a muscle fibre, it will:-

Sprain is due to excessive pulling of