Exam 3- Nurs 617 THIS YEAR MAIN EXAM , QUESTIONS AND CORRECT ANSWERS
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Course
Nurs 617
Institution
Nurs 617
Exam 3- Nurs 617 THIS YEAR MAIN EXAM ,
QUESTIONS AND CORRECT ANSWERSExam 3- Nurs 617 THIS YEAR MAIN EXAM ,
QUESTIONS AND CORRECT ANSWERSExam 3- Nurs 617 THIS YEAR MAIN EXAM ,
QUESTIONS AND CORRECT ANSWERSExam 3- Nurs 617 THIS YEAR MAIN EXAM ,
QUESTIONS AND CORRECT ANSWERSExam 3- Nurs 617 THIS Y...
Exam 3- Nurs 617 THIS YEAR MAIN EXAM ,
QUESTIONS AND CORRECT ANSWERS
Functions of the nervous system (4) - ANSWER-- Detecting,
analyzing and transmitting information
o Provides foundation for intelligence, anticipation, and
judgment
o Controls skeletal muscle movement
o Helps to regulate cardiac and visceral smooth activity
Definition of Neurons - ANSWER-functional cells that conduct
impulses to other nerve cells, muscles, or gland cells
Three parts of a neuron - ANSWER-cell body, dendrites, axon
What does the cell body do? - ANSWER-- Soma- nucleus- DNA
and genetic codes
- Cell activity
- Metabolic activities
What do dendrites do? - ANSWER-conduct info to cell body
§ Extension of cell body that brings info into the cell body
,Exam 3- Nurs 617 THIS YEAR MAIN EXAM ,
QUESTIONS AND CORRECT ANSWERS
What does the axon do? - ANSWER-Long projections from the
cell body (normally only one) that pass nerve impulses
Function of neuroglial cells - ANSWER-- provide protection,
regulate blood flow and metabolic support for the neurons
o Form the myelin sheath from oligodendrocytes and Schwan
cells
§ Helps with the transmission of electrical impulses along the
nerve cells
Neuroglial cells of the central nervous system - ANSWER-
oligodendrocytes
Neuroglial cells of the peripheral nervous system - ANSWER-
Satellite
What do astrocytes do? - ANSWER-help to form the blood-brain
barrier, which prevents the entrance of toxic materials from the
blood to the brain
Major fuel source for the brain? - ANSWER-Glucose
,Exam 3- Nurs 617 THIS YEAR MAIN EXAM ,
QUESTIONS AND CORRECT ANSWERS
Afferent - ANSWER-sensory- transmit information to the CNS
Efferent - ANSWER-Motor carry information away from the CNS
Pathway of chemical synaptic transmission - ANSWER-
presynaptic release of chemical messenger (neurotransmitters)
-> placed in vesicle within the synaptic cleft-> postsynaptic
structures -> neurotransmitter removal
Two amino acid neurotransmitters - ANSWER-Glutamate and
GABA
Function of GABA - ANSWER-main inhibitory messenger
(vision/motor/anxiety)
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