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Bio 141 Exam 4 (PVCC) Questions and Answers 100% Verified
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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...

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  • November 12, 2024
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  • 2024/2025
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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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