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NS2 Quiz
flash cards for nervous system 2 quiz
| Question | Answer |
|---|---|
| nervous system subdivision that is composed of the brain and spinal cord | central nervous system |
| subdivision of the PNS that controls voluntary activities such as the activation of skeletal muscles | somatic nervous system |
| nervous system subdivision that is composed of the cranial and spinal nerves and ganglia | peripheral nervous system |
| subdivision of the PNS that regulates the activity of the viscera (heart and smooth muscle, and of glands); it is also called the involuntary nervous system | autonomic nervous system |
| a major subdivision of the nervous system that interprets incoming information and issues orders | central nervous system |
| a major subdivision of the nervous system that serves as communication lines, linking all parts of the body to the CNS | peripheral nervous system |
| specialized cells that myelinate the fibers of neurons found in the PNS | Schwann cells |
| junction or point of close contact between neurons | synapse |
| neuron that serves as part of the conduction pathway between sensory and motor neurons | association neurons |
| gaps in a myelin sheath | nodes of Ranvier |
| neuron that conducts impulses away from the CNS to muscles and glands | efferent neurons |
| neuron that conducts impulses toward the CNS from the body periphery | afferent neurons |
| chemicals released by neurons that stimulate other neurons, muscles, or glands | neurotransmitters |
| midbrain | brain stem |
| pons | brain stem |
| medulla oblongata | brain stem |
| thalamus | diencephalons |
| hypothalamus | diencephalons |
| site of regulation of water balance and body temperature | hypothalamus |
| relay station between medulla and cerebrum that contains reflex centers involved in regulating rate and depth of breathing in conjunction with lower brain stem centers | pons |
| responsible for the regulation of posture and coordination of skeletal muscle movements | cerebellum |
| largest part of the brain the contains gyri, sulci and fissures | cerebrum |
| area where all ascending and descending nerves pass and controls the rate of heartbeat, breathing activities, as well as coughing and sneezing centers | medulla oblongata |
| large fiber tract connecting the cerebral hemispheres | corpus callosum |
| relay center for all sensory impulses except smell and is associated with pain and temperature | thalamus |
| relays sensory signals between the spinal cord and thalamus and relays motor signals between the cerebral cortex and the pons and spinal cord | midbrain |
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