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27 Cards in this Set

  • Front
  • Back
Central Nervous System
brain and spinal cord
portion of the central nercous system contained within the cranium
larges portion of the brain; divided into right and left halves, known as cerebral hemispheres, that are connected by a bridge of nerve fibers called the corpus callosum; lobes of the cerebrum are named after the skull bones they underlie
frontal lobe
anterior secton of each cereberal hemisphere responsible for voluntary muscle movement and personality
parietal lobe
portion posterior to the frontal lobe, responsible for the sensation such as pain, temperature and touch
temporal lobe
portion that lies below the frontal lobe, responsible for hearing, taste and smell
occipital lobe
portion posterior to the parietal and temporal lobes, responsible for vision
cerebral cortex
outer layer of the cerebrum consisting of gray matter responsible for higher mental functions (cortes=bark)
thalamus (diencephalon)
each of two gray matter nuclei deep within the brain responsible for relaying sensory information to the cortex
convolutions (mounds) of the cerebral hemispheres
shallow grooves that sparate gyri
deep grooves in the brain
portion of the brain located below the occipital lobes of the cerebrum, responsible for control and coordination of skeletal muscles
region of the brain that serves as a relay between the cerebrum, cerebellum, and the spinal cord, responsible for breathing, hear rate, and body temperature, the three levels are the mesencephalon (midbrain), pons and medulla oblongata
series of interconnected cavities within the cerebral hemispheres and brainstem filled with cerebrospinal fluid
cerebrospinal fluid
plamalike clear fluid circulating in and around the brain and spinal cord
spinal cord
column of nervous tissue from the brainstem through the vertebrae, responsibles for nerve conduction to and from the brain and the body
three membranes that cover the brain and spinal cord, consisting of the dura mater, pia mater and arachnoid mater
peripheral nervous system
nerves that branch from the central nercous system, including nerves of the brain (cranial nerves) and spinal cord (spinal nerves)
cranial nerves
12 pairs of nerves arising from the brain
spinal nerves
31 pairs of nerves arising from the spinal cord
sensory nerves
nerces that conduct impulses from body parts and carry sensory information to the brain also called afferent nerves (ad=todward; ferre=carry)
motor nerves
nerves that conduct motor impulses from the brain to muscles and glands; also called efferent nerves (e=out, ferre=carry)
autonomic nervous system
nerves that carry involuntary impulses to smooth muscles, cardiac muscle and various glands
control center for the autonomic nervous system located below the thalamus (diencephalon)
sympathetic nervous system
division of the ANS concerned primarily with preparing the body in stressful or emergency situations
parasympathetic nervous system
division of the ANS that is most active in ordinary conditions; it counterbalances the effects of the sympathetic system by restoring the body to a restful state after a stressful experience