Bio 141 Exam 4 (PVCC) Questions and Answers 100% Verified
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Course
Bio 141
Institution
Bio 141
What are the two arms of the ANS? - ️️parasympathetic division and sympathetic
division
The _______ division promotes maintenance functions and conserves energy -
️️parasympathetic
What are some examples of these adjusments? - ️️adjust heart rate, blood
pressure, and digestive proc...
Bio 141 Exam 4 (PVCC)
What are the two arms of the ANS? - ✔️✔️parasympathetic division and sympathetic
division
The _______ division promotes maintenance functions and conserves energy -
✔️✔️parasympathetic
What are some examples of these adjusments? - ✔️✔️adjust heart rate, blood
pressure, and digestive processes
How does the ANS operate? - ✔️✔️subconscious control
What are some other names of the ANS? - ✔️✔️involuntary nervous system or general
visceral nervous system
What do both the ANS and SNS have? - ✔️✔️motor fibers
How do the ANS and SNS differ? - ✔️✔️effectors, efferent pathways and ganglia,
target organ responses to neurotransmitters
How does the ANS ensure optimal support for body activities? - ✔️✔️Adjustments
What does the SNS innervate? - ✔️✔️skeletal muscles
How do the cranial nerves in the SNS extend to skeletal muscle? - ✔️✔️directly
The _______ neuron has cells bodies in the CNS with thin, lightly myelinated
____________axon extending to ganglion. - ✔️✔️preganglionic, preganglionic
The ________ neuron is outside the CNS - ✔️✔️postganglionic
The cell body synapses with the ______ axon in the autonomic ganglion. -
✔️✔️pregonglionic
What do the motor neurons in the ANS innervate? - ✔️✔️smooth muscles, cardiac
muscles, glands
For the SNS, all somatic motor neurons release ________ - ✔️✔️acetylcholine
Preganglionic fibers in the ANS release ______ - ✔️✔️acetylcholine
Postganglion fibers in the ANS release______ - ✔️✔️norepinephrine, ACh
, There is _______ of the somatic and autonomic function - ✔️✔️overlap
Most spinal and cranial nerves contain both (________) and (________) fibers -
✔️✔️somatic, autonomic
Adaptations usually involve both (________) muscles and (________) organs. -
✔️✔️Skeletal, visceral
The ______ division mobilizes body during activity - ✔️✔️sympathetic
Dual innervation means that all visceral organs are served by ________, but these
____________. - ✔️✔️both divisions, divisions cause opposite effects
It is ________ between the two divisions that maintains homeostasis - ✔️✔️dynamic
antagonism
The _______ keeps body energy use as low as possible, even while carrying out
maintenance activities. - ✔️✔️parasympathetic division
An example of the parasympathetic division would be someone _____ and reading after
a _______ - ✔️✔️relaxing, meal
With the parasympathetic division, blood pressure, heart rate, and respiratory rates are
all ___-, while _________ is high. - ✔️✔️low, GI tract activity
Additionally for the parasympathetic division, the pupils are ______ and lines are
______ for close vision. - ✔️✔️constricted, accommodated
The __________ mobilizes the body during activity and therefor this system is referred
to as the ____________- system. - ✔️✔️sympathetic division, "flight-or-flight"
the sympathetic system is activated by _______, _________,_________ and _______ -
✔️✔️exercise, excitement, emergency, embarrassment
With this system, heart rate is ________, the mouth is ______, skin is ________ and
the pupils are ________ for far vision (to run). - ✔️✔️increased, dry, cold/sweaty,
dilated
The sympathetic system is active during vigorous ___________ when blood is shunted
to the skeletal muscles and heart, bronchioles are ________ and the liver release
_________ - ✔️✔️physical activity, dilated, glucose
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