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chapter 7.1-7.2
| Question | Answer |
|---|---|
| CNS | integration, interprets, issues. brain and spinal cord |
| PNS | communication lines, spinal and cranial nerves |
| sensory division | going TO the CNS |
| motor division | leaving FROM the CNS |
| autonomic nervous system | controls smooth and cardiac muscles. involuntary |
| what are the functional subdivisions of the nervous system | sensory (afferent) and motor (efferent) |
| what makes us the CNS | the brain and spinal cord |
| what makes up the PNS | spinal and cranial nerves |
| what are the subdivision of the autonomic nervous system | sympathetic and parasympathetic |
| what process conveys INCOMING messages toward the cell body | dendrites |
| know the location of an axon terminal | at the end of the neuron |
| what cells form myelin sheaths around nerve fibers | schwann cells |
| what are the support cells in the CNS/PNS called | neuroglia |
| what does the axon do | conduct impulses away from the cell body |
| what are the gaps in between schwann cells called | nodes of ranvier |
| what is the importance of interneurons | they connect sensory and motor neurons |
| what reflexes stimulate skeletal muscles | somatic reflexes |
| what do oliodendrocytes help to form | they produce myelin sheaths |
| what ciliated neuroglia cell helps circulate cerebral spinal fluid | ependymal |
| multipolar neurons | all motor and interneurons, many extensions |
| unipolar neurons | one process, conducts impulses to and away from the cell body |
| bipolar neurons | one axon one dendrite, special sense organs (eyes) |
| define ganglia | collections of cell bodies outside the CNS and in the PNS |
| what is the all-or-none response | nerve impulse is propagated or it is not |
| know the basic sequence for a nerve impulse | dendrite, cell body, axon |
| when a neuron is in its resting state what is occurring | it is inactive and its polarized |
| what is the synaptic cleft | gap between axon terminals and the next neuron |
| which ion causes neuron vesicles to fuse with the axons membrane | calcium |
| what is an action potential | a nerve impulse |
| be able to put the sequence of a typical reflex arc in order | sensory receptor, sensory neuron, integration center, motor neuron, effector organ |
| what does grey matter contain | mostly unmyelinated fibers and cell bodies |
| what are bundles of nerve fibers called | tracts and nerves |
| know what forms white and gray matter | white- myelinated grey- unmyelinated |
| what are proprioceptors | receptors in muscles and tendons |
| what do the axon terminals do | release neurotransmitter from vesicles |
| what are the two major functional properties of neurons | irritability and conductivity |
Created by:
rileyri