Ch. 8 Anatomic Terms Flashcards Preview

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Flashcards in Ch. 8 Anatomic Terms Deck (27):
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central nervous system (CNS)

brain & spinal cord

1

brain

brain

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cerebrum

largest portion of the brain

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frontal lobe

part of the cerebrum responsible for muscle movement and personality

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parietal lobe

part of the cerebrum responsible for pain, temperature and touch

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temporal lobe

part of the cerebrum responsible for hearing, taste and smell

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occipital lobe

part of the cerebrum responsible for vision

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cerebral cortex

part of the cerebrum responsible for higher mental function; gray matter

8

thalamus, diencephalon

2 gray matter nuclei deep in the brain responsible for relaying sensory info to the cortex

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gyri

mounds of the cerebral hemispheres

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sulci

shallow grooves that separate gyri

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fissures

deep grooves in the brain

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cerebellum

portion of the brain located below the occipital lobe of the cerebrum; responsible for coordination and control of skeletal muscles

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brainstem

region of the brain that serves as a relay between the cerebrum, cerebellum and spinal cord; responsible for autonomic functions; 3 levels - mesencephalon; pons and medulla oblongata

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ventricles

interconnected cavities within the brain filled with cerebrospinal fluid

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cerebrospinal fluid (CSF)

plasma-like clear fluid circulating in and around the brain and spinal cord

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spinal cord

column of nervous tissue from the brainstem through the vertebrae; responsible for nerve conduction to and from the brain and body

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meninges

3 membranes that cover the brain and spinal cord - the dura mater, pia mater and arachnoid mater

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peripheral nervous system (PNS)

nerves that branch from the CNS, including cranial nerves and spinal nerves

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cranial nerves

12 pairs of nerves arising from the brain

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spinal nerves

31 pairs of nerves arising from the spinal cord

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sensory nerves

nerves that conduct impulses from the body to the brain; aka afferent nerves (ad = toward; ferre = carry)

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motor nerves

nerves that conduct motor impulses from the brain to the body; aka efferent nerves (e = out; ferre = carry)

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autonomic nervous system (ANS)

nerves that carry involuntary impulses to smooth muscle, cardiac muscle, and various glands

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hypothalamus

control center for the ANS located below the thalamus (diencephalon)

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sympathetic nervous system

division of the ANS that preps the body for a fight or flight response

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parasympathetic nervous system

division of the ANS that counterbalances the sympathetic nervous system by returning the body to a restful state

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