Question

which organ systems are used to help the body shiver?
circulatory and respiratory
nervous and muscular
circulatory and muscular
respiratory and nervous

Explanation:

Shivering is an involuntary muscle - contraction response to cold. The nervous system detects the drop in body temperature and sends signals to the muscular system to contract rapidly, generating heat. So the nervous and muscular systems are involved.

Answer:

B. nervous and muscular