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Definition
| basic functional unit of the nervous system |
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Definition
| supporting cells that separate and protect the nuerons. Also known as glia cells |
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| What does the CNS consist of |
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Definition
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| What does the PNS consist of |
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Definition
| All neural tissue outside the CNS |
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| The PNS can first be divided into what 2 divisions |
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Definition
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| What does the afferent division do |
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Definition
| brings sensory information to the CNS |
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| What does the efferent division do |
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Definition
| carriers motor commands out of the CNS |
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Term
| What does the somatic nervous system control |
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Definition
| controls skeletal muscle contractions. Somatic therefore is a voluntary control |
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Term
| What does the autonomic nervous system control |
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Definition
| everything visceral. Such as smooth muscle, cardiac muscle, glandular secretions |
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Term
| What division in the ANS have an antagonistic relationship |
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Definition
| sympathetic and the parasympathetic |
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Term
| What do most neurons lack which prevents the cells from dividing. |
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Definition
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Definition
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Definition
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Definition
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| what constitutes the cytoplasm surrounding the nucleus |
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Definition
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Term
| what is axoplasm and where is it located |
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Definition
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Term
| What is the thickened regions between the cell body and the axon referred to as |
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Definition
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| When an axon branches it produces |
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Definition
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Term
| what do collateral allow the neuron to do |
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Definition
| communicate with several other cells at the same time |
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Term
| the end of the axon or any collaterals end in a series of fine extensions called |
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Definition
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Term
| What are the 4 structural type of neurons and where can they be found |
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Definition
| Anaxonic (brain and special sense organs), Bipolor (special sense organs), Unipolar (sensory neurons of the PNS), Multipolar (Most common in the CNS) |
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Term
| What are the 3 functional classifications of Nuerons |
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Definition
| Sensory, Motor, and Interneurons |
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Term
| what are the 3 types of sensory receptors and what do they do |
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Definition
| Interoceptors (monitor inside needs), Exteroceptors (provide information outside the body), Proprioceptors (monitor movement and position) |
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Term
| The CNS has 4 types of neroglia what are they and what is there function |
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Definition
| ependymal cells (line the central canal and ventricles. move, monitor and create cerbrospinal fluid), astrocytes (blood-brain barrier), oligodenrocytes (form unsulation called myelin), microglia (wander around engulfing debris, waste, and pathogens) |
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Term
| What is the function of a Schwann cell |
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Definition
| forms a sheath around the peripheral axon. Only cover a segment so a series of schwann cells are need to cover an axon. |
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Term
| What is the change in resting potential that decreases with distance from stimuls |
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Definition
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| Draw and Label the Graph of an action potential |
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Definition
| Look at table 12-3 pg 402 for answer |
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| When does Continuous Conduction occur |
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Definition
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| When does Saltatory Conduction occur |
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Definition
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Term
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Definition
Functional point of contact between two neurons
or between a neuron and an effector cell |
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Term
| Synapses that release ACh are known as |
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Definition
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Term
Which neurotransmitters give “Feel Good”
Effects |
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Definition
| Norepinephrine • Dopamine• Serotonin |
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