Nervous System Basics

The central nervous system (CNS) and the peripheral nervous system (PNS); the CNS is composed of the brain and spinal cord, while the PNS is composed of peripheral nerves that connect the CNS to the rest of the body.

The somatic nervous system and the autonomic nervous system.

Twelve pairs.

<p>Sensory, integrative, and motor functions.</p> Signup and view all the answers

<p>Mixed nerves.</p> Signup and view all the answers

<p>The somatic nervous system is consciously controlled, while the autonomic nervous system is unconscious.</p> Signup and view all the answers

<p>They fill spaces, support neurons, provide structural frameworks, produce myelin, and carry on phagocytosis.</p> Signup and view all the answers

<p>Thirty-one pairs.</p> Signup and view all the answers

<p>Sensory receptors gather information, convert it into nerve impulses, integrate the impulses in the brain as perceptions, and then produce motor functions via effectors.</p> Signup and view all the answers

<p>It is a motor root.</p> Signup and view all the answers

<p>Synapse.</p> Signup and view all the answers

<p>Sensory impulses and motor impulses.</p> Signup and view all the answers

<p>To maintain homeostasis of visceral activities without conscious effort</p> Signup and view all the answers

<p>Sympathetic and parasympathetic divisions</p> Signup and view all the answers

<p>Lower cervical and upper thoracic nerves</p> Signup and view all the answers

<p>Lower abdomen, external genitalia, buttocks, and legs</p> Signup and view all the answers

<p>To supply muscles and skin of the neck</p> Signup and view all the answers

<p>The parasympathetic division operates under normal conditions</p> Signup and view all the answers