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NURS 168 Quiz #3 Questions With Complete Solutions
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NURS 168 Quiz #3 Questions With Complete Solutions
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NURS 168 Quiz #3 Questions WithComplete Solutions
absence of myelin sheath * Correct Answers impulses are
slowed down or lost
Acetylcholine (ACh) ^ Correct Answers - contracts smooth
muscle
- dilates blood vessels
- increases bodily secretions
- decreases heart rate
- arousal, memory, learning, neuroplasticity
action potential ^ Correct Answers - neural impulse; charge
that travels down an axon
- an all or nothing event ^
ages 11-12 Correct Answers - unused neural connections are
deleted
- most used are permanent in the adult brain
ages 3-11 * Correct Answers - critical thinking begins at age 8
*
- brain becomes a dense network of neural connections
- best time to learn a 2nd language, drawing, instruments
amphetamines * Correct Answers structurally close to NE and
dopamine
autocrine ^ Correct Answers within the cell
, axons * Correct Answers transmits electrical impluses
biological cycles ^ Correct Answers - circadian rhythm
- menstrual cycle
birth to 3 years * Correct Answers - unconnected neurons
begin to connect
- sensitive periods in early brain development *
- 31 trillion synapses formed because of environmental stimuli ^
brain development 18 days after fertilization ^ Correct Answers
neural plates begin to form from the embryonic tissue
brain development 21 days after fertilization ^ Correct Answers
neural plates become neural tube
brain development 7 weeks after fertilization ^ Correct Answers
- brain structure is developed
- forebrain (prosencephalon) ^
- midbrain (mesencephalon) ^
- hindbrain (rhombencephalon) ^
brain development at birth Correct Answers - brain is relatively
small
- developed sufficiently along with heart and lungs
brain development during 6th week in pregnancy * Correct
Answers first electrical brain activity (unorganized firing)
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