Chapter 29

Central Nervous System-

The part of the nervous system which in vertebrates consists of the brain and spinal cord

Peripheral Nervous System

connects the central nervous system to sensory organs and other organs of the body, muscles, blood vessels and glands.

Somatic Nervous system

is the part of the peripheral nervous system associated with skeletal muscle voluntary control of body movements

Autonomic Nervous System

the part of the nervous system responsible for control of the bodily functions not consciously directed, such as breathing, the heartbeat, and digestive processes. Body functions stimulated by the parasympathetic nervous system include sexual arousal, salivation, lacrimation, urination, digestion, and defecation

Sensory Neuron

Sensory Neurons are nerve cells within the nervous system, and is responsible for converting stimuli into internal electrical impulses.


Interneuron is a neuron that transmits impulses between other neuron

Motor neuron

A motor neuron is a nerve cell whose cell body is located in the spinal cord. The fiber projects outside the spinal cord to directly or indirectly control effector organs

Neuromuscular junction

Neuromuscular junction is a chemical synapse formed by the contact between a motor neuron and a muscle fiber


Acetylcholine is an organic chemical that functions in the brain and body of many types of animals


Neuropinephrine is a chemical released from the sympathetic nervous system in response to stress


Synapse is a junction between two nerve cells,

White matter

White matter is composed of bundles of nerve cell projections, which connect various gray matter areas of the brain to each other

Gray matter

Gray matter consists neuronal cell bodies, neuropil, glial cells, synapses, and capillaries.

Cerebral cortex

Cortex is the outer layer of the cerebrum.

Limbic system

The limb is System is a complex system of nerves and networks in the brain, involving several areas near the edge of the cortex concerned with instinct and moods.

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