Yes the heart does contract and relax for every moment of ones life .This action enables the blood to circulate the body efficiently
Muscles contract and relax to move a joint. ... Muscles contract at a constant rate. Muscles contract and relax to move a joint.
Yes, but in mammals it is a minor function. (In salt water fish it is their major function.)
Muscles can contract and shorten
muscles contract and relax by bring about movements.
Cardiac muscles are found only in the walls of the heart. They are specialized muscles that contract and relax to pump blood throughout the body, and they are involuntary, meaning we cannot control their contraction.
They contract and relax
Muscles pump blood throughout the body by contracting and relaxing. When muscles contract, they squeeze the blood vessels, pushing blood forward. This helps to circulate blood to all parts of the body, delivering oxygen and nutrients while removing waste products.
If the papillary muscles fail to contract the valves will prolapse. The papillary muscles are located in the ventricles and contract to prevent prolapse.
They constrict, cramp, & spasm in an attempt to prevent losing body heat.
Smooth Muscles can, but Cardiac Muscles can not.
contract
Shorten