The portion of the nervous system that is most closely associated with the contraction of cardiac muscle is the
(1) autonomic nervous system
(2) somatic nervous system
(3) cerebrum
(4) hypothalamus

(1) autonomic nervous system

Explanation:

The nervous system is made up of majorly 2 components, which are the autonomic nervous system and the somatic nervous system.

The somatic nervous system is responsible for the voluntary responses resulting from the contraction of skeletal muscles. This system controls voluntary body movements through the skeletal muscles.

The autonomic nervous system is responsible for the control of involuntary responses such as breathing, digestion, pupillary response, urination etc. The autonomic nervous system controls the cardiac muscle, smooth muscle and glandular tissue and is further divided into 2 sections: the sympathetic nervous system, and the parasympathetic nervous system. Their control of the internal organ in homeostatic mechanisms in the body is regulated by the hypothalamus .

1. Autonomic nervous system

Explanation:

The ANS plays a very important role in systemic disease. It plays an important role in the maintenance of homeostasis and contraction of muscle

answer: proteins

explanation: complement is   system of circulate in the blood in a inactive form

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