The size of orifice is decreased by elevator muscle.

The viscosity of liquid decrease with decrease of temperature .( correct the sentence)

Bicep is a/ an extensor muscle.

A certain gas diffuses from two different vessels A and B The vessel A has a circular orifice while vessel B has square orifice of length equal t the radius of the orifice of vessel A. The ratio of the rates of diffusion of the gas from vessel A to vessel B, assuming same temperature and pressure is :

____is the smallest muscle.

Size of the nucleus is:

Differentiate between flexor muscle and extensor muscle.