Nervous System Basics
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It is the chief control and coordinating system of the body. It adjusts the body to its surrounding and regulates all body activities both Voluntary and Involuntary. The basic structural and functional unit of the nervous system is nerve cell which is also called ______.

Neuron

Information processing in the nervous systems takes place through exchange of ______ (Action Potentials).

nerve impulses

CENTRAL NERVOUS SYSTEM - CNS Integrates and correlates incoming sensory information. Source of thoughts, emotions and memories. Most motor signals originate in CNS. Consists of ______ and Spinal Cord.

Brain

PERIPHERAL NERVOUS SYSTEM - PNS Nerve fibers that carry information between CNS and other parts of body at periphery. I. Afferent Division (Sensory) –carry information to CNS II. Efferent Division (Motor) – which carry information from CNS to muscle and glands. Efferent (Motor) division of PNS further divide into  Somatic Nervous System  it is under our voluntary control E.g. Nerve fibers of motor neuron that supply skeletal ______.

<p>muscle</p> Signup and view all the answers

Enteric Nervous System is a local network of nerves in the GIT controlling the secretory and motor activities of GIT and under influence of ______

<p>ANS</p> Signup and view all the answers

Autonomic Nervous System  it is not under our control (involuntary) and supplies smooth ______ and glands.

<p>muscle</p> Signup and view all the answers

Neurons in the peripheral nervous system transmit signals between the Receptors and CNS or CNS and Effectors in the body. In Peripheral Nervous System, there are … 12 pairs of ______ Nerves

<p>Cranial</p> Signup and view all the answers

The Autonomic Nervous System (ANS) supplies cardiac muscle, smooth muscle, and ______

<p>glands</p> Signup and view all the answers

Glial cells support the neurons physically, metabolically, and ______

<p>functionally</p> Signup and view all the answers

The human nervous system contains about 10^12 ______

<p>neurons</p> Signup and view all the answers

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