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Milady ch 6 - 5

Nervous system vocabulary

TermDefinition
Neurology The scientific study of structure, function, and pathology of the nervous system
Central Nervous System (CNS) Consists of brain, spinal cord, spinal nerves, cranial nerves, and controls consciousness, the five senses and voluntary muscle actions.
Peripheral Nervous System (PNS) A system of nerves that connects the peripheral (outer) parts of the body to the central nervous system. It contains sensory and motor nerves.
Autonomic Nervous System (ANS) Controls involuntary muscles and regulates the action of smooth muscles, glands, blood vessels heart and even breathing.
Brain largest most complex nerve tissue in the body, it controls sensation, muscles, activity of glands, and the power to think, sense, and feel.
Spinal Cord originates in the brain and extends down to the lower extremity of the trunk
Neuron the primary structural unit of the nervous system
Dendrites nerve fibers that carry impulses from the nerve cell and receive impulses from other neurons
Axon/Axon Terminal nerve fibers that send impulses away from the cell body to other neurons glands or muscles.
Afferent Nerves/Sensory Nerves nerve fibers that carry impulses from the sense organs to the brain
Receptors sensory nerve endings close to the skin surface
Effrent Nerves/Motor Nerves nerve fibers that carry impulses form the brain to the muscles or glands producing movement
Reflex An automatic response to stimulus involving an impulse from a sensory receptor along the sensory nerve to the spinal cord.
Digital Nerve supplies sensory function to the fingers
Radial Nerve supplies sensory function to the thumb side of the arm and back of the hand.
Median Nerve supplies the arm and hand with sensory functions.
Ulnar Nerve supplies sensory functions to the little finger side of the arm and palm of the hand
Tibial Nerve nerve extension that passes behind the knee and subdivides, supplying impulses to the knee, calf muscles, leg skin, and the sole heal and underside of the toes.
Common Peroneal Nerve nerve extension that extends from behind the knee winds around the head of the fibula to the front of the leg.
Anterior Tibial Nerve/Deep Peroneal Nerve Nerve that extends the front of the leg behind the muscles supplying impulses to the muscles and skin of the top of the foot on the first two toes side.
Musclo-Cutaneous Nerve/Superficial Peroneal Nerve extends down the leg just under the skin supplying impulses to the muscles and skin of the leg as well as the skin and toes on top of the foot.
Dorsal-Cutaneous Nerve/Dorsal Nerve Branch nerve that provides sensory function to the top of the foot.
Saphenous Nerve supplies impulses to the skin of the inner side of the leg and foot.
Sural Nerve supplies impulses to the skin on the outer side and back of the foot and leg.
Created by: beckieharris
 

 



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