Human Biology

Sylvia S. Mader, Michael Windelspecht

Chapter 14

Nervous System - all with Video Answers

Educators

Chapter Questions

Problem 1

Which of the following neuron parts receive(s) signals from sensory receptors of other neurons?
a. cell body
b. axon
c. dendrites
d. Both a and c are correct.

Rikhil Makwana

Rikhil Makwana

Numerade Educator

Problem 2

The neuroglia cells that form myelin sheaths in the CNS are called
a. oligodendrocytes.
b. ganglionic cells.
c. Schwann cells.
d. astrocytes.
e. microglia.

Joanna Quigley

Numerade Educator

Problem 3

Which of these correctly describes the distribution of ions on either side of an axon when it is not conducting a nerve signal?
a. more sodium ions (Na $^{+}$ ) outside and more potassium ions (K $^{+}$ ) inside
b. more $\mathrm{K}^{+}$ outside and more $\mathrm{Na}^{+}$ inside
c. charged protein outside and $\mathrm{Na}^{+}$ and $\mathrm{K}^{+}$ inside
d. $\mathrm{Na}^{+}$ and $\mathrm{K}^{+}$ outside and water only inside
e. chloride ions (Cl $^{-}$ ) outside and $\mathrm{K}^{+}$ and $\mathrm{Na}^{+}$ inside

Joanna Quigley

Numerade Educator

Problem 4

When the action potential begins, sodium gates open, allowing $\mathrm{Na}^{+}$ to cross the membrane. This causes the charge on the inside of the neuron to become
a. more negative.
b. more positive.
c. neutral.
d. None of these are correct.

Joanna Quigley

Numerade Educator

Problem 5

Repolarization of an axon during an action potential is produced by
a. inward diffusion of $\mathrm{Na}^{+}$
b. outward diffusion of $\mathrm{K}^{+}$
c. inward active transport of $\mathrm{Na}^{+}$
d. active extrusion of $\mathrm{K}^{+}$

Rikhil Makwana

Numerade Educator

Problem 6

Transmission of the nerve signal across a synapse is accomplished by the
a. movement of $\mathrm{Na}^{+}$ and $\mathrm{K}^{+}$.
b. release of a neurotransmitter by a dendrite.
c. release of a neurotransmitter by an axon.
d. release of a neurotransmitter by a cell body.
e. All of these are correct.

Rikhil Makwana

Numerade Educator

Problem 7

Which of the following cerebral areas is not correctly matched with its function?
a. occipital lobe- -vision
b. parietal lobe - somatosensory area
c. temporal lobe- primary motor area
d. frontal lobe - Broca's motor speech area

Ashima Tiwari

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Problem 8

Which of the following brain regions is not correctly described?
a. The medulla oblongata regulates heartbeat, breathing, and blood
pressure
b. The cerebellum coordinates voluntary muscle movements.
c. The thalamus secretes melatonin, which regulates daily body rhythms.
d. The midbrain acts as a reflex center for visual, auditory, and tactile responses.

Joanna Quigley

Numerade Educator

Problem 9

This part of the brain forms the link between the nervous system and the endocrine system.
a. corpus callosum
b. reticular formation
c. amygdala
d. hypothalamus

Joanna Quigley

Numerade Educator

Problem 10

The regulation of the information that is to be relayed to memory is the function of the
a. reticular formation.
b. hippocampus.
c. hypothalamus.
d. cerebellum.
e. pons

Joanna Quigley

Numerade Educator

Problem 11

Memories are stored in the sensory association areas of the
a. cerebral cortex.
b. spinal cord
c. brain stem.
d. hypothalamus.

Joanna Quigley

Numerade Educator

Problem 12

Label this diagram.

Joanna Quigley

Numerade Educator

Problem 13

Which of the following is correct regarding the autonomic nervous system?
a. It uses both cranial and spinal nerves.
b. It is divided into sympathetic and parasympathetic divisions.
c. Most organs under ANS control are under dual innervation that is, by both sympathetic and parasympathetic divisions.
d. Major responsibilities are regulation and repair of cardiac muscle, smooth muscles, organs, and glands.
e. All of these are correct.

Joanna Quigley

Numerade Educator

Problem 14

The sympathetic division of the autonomic system does not cause
a. the liver to release glycogen.
b. dilation of bronchioles.
c. the gastrointestinal tract to digest food.
d. an increase in the heart rate.

Rikhil Makwana

Numerade Educator

Problem 15

This neurotransmitter plays an important role in sleeping, emotions, and perception.
a. dopamine
b. acetylcholine
c. GABA
d. seratonin

Joanna Quigley

Numerade Educator

Problem 16

Which of the following does not act as a stimulant to the CNS?
a. cocaine
b. methamphetamine
c. ecstasy
d. alcohol

Joanna Quigley

Numerade Educator