MICROANATOMY

Detailed explanation-1: -The brain controls the heart directly through the sympathetic and parasympathetic branches of the autonomic nervous system, which consists of multi-synaptic pathways from myocardial cells back to peripheral ganglionic neurons and further to central preganglionic and premotor neurons.

Detailed explanation-2: -Every movement the body makes requires communication between the brain and the muscles. The nervous system provides the link between thoughts and actions by relaying messages from the brain to other parts of the body.

Detailed explanation-3: -Smooth muscle cannot be controlled consciously and thus acts involuntarily.

Detailed explanation-4: -The brainstem controls movement of the eyes, face, and mouth. It also relays sensory messages (such as hot, pain, and loud) and controls respirations, consciousness, cardiac function, involuntary muscle movements, sneezing, coughing, vomiting, and swallowing.