Chapter 46, The Mammalian Nervous System: Structure and Higher Functions Video Solutions, Life: The Science of Biology

Problem 1

Which of the following describes the route of sensory information from the foot to the brain?
a. Ventral horn, spinal cord, medulla, cerebellum, midbrain, thalamus, parietal cortex
$b$. Dorsal horn, spinal cord, medulla, pons, midbrain, hypothalamus, frontal cortex
$c .$ Dorsal horn, spinal cord, medulla, pons, midbrain, thalamus, parietal cortex
d. Ventral horn, spinal cord, pons, cerebellum, midbrain, thalamus, parietal cortex
$e .$ Dorsal horn, spinal cord, medulla, pons, midbrain, thalamus, frontal cortex

Rikhil Makwana

Numerade Educator

01:59

Problem 2

Which statement about the reticular system is not true?
$a .$ Increased activity in the reticular system induces sleep.
$b$. The reticular system is located in the brain stem.
c. Damage to the reticular system in the midbrain can result in coma.
$d .$ Information from the spinal cord is routed to different nuclei in the reticular system and to the forebrain.
$e .$ There are groups of neurons called nuclei in the reticular system.

Rikhil Makwana

Numerade Educator

02:15

Problem 3

Which statement about afferent and efferent pathways is $n o t$ true?
a. Sensory afferent pathways carry information of which we are consciously aware.
b. Visceral afferents carry information about physiological functions of which we are not consciously aware.
$c .$ The voluntary division of the efferent portion of the peripheral nervous system executes conscious movements.
$d .$ The cranial nerves and spinal nerves are part of the peripheral nervous system.
$e .$ Afferent and efferent axons never travel in the same
nerve.

Rikhil Makwana

Numerade Educator

03:10

Problem 4

Which statement about the limbic system is not true?
a. In the spinal cord, the white matter contains the axons conducting information up and down the spinal cord.
b. The limbic system is involved in basic physiological drives, instincts, and emotions.
$c .$ The limbic system consists of primitive forebrain structures.
$d$. In humans, the limbic system is the largest part of the brain.
$e .$ In humans, a part of the limbic system is necessary for the transfer of short-term memory to long-term memory.

Rikhil Makwana

Numerade Educator

00:11

Problem 5

Which of the following represents the largest portion of the human cerebral cortex?
a. The frontal lobes
$b$. The primary somatosensory cortex
$c .$ The temporal cortex
$d .$ The association cortex
$e .$ The occipital cortex

Emily Marty

Numerade Educator

04:28

Problem 6

Which statement about the autonomic nervous system is true?
$a .$ The sympathetic division is afferent, and the parasympathetic division is efferent.
b. The transmitter norepinephrine is always excitatory, and acetylcholine is always inhibitory.
$c .$ Each pathway in the autonomic nervous system includes two neurons, and the neurotransmitter of the first neuron is acetylcholine.
$d .$ The cell bodies of many sympathetic preganglionic neurons are in the brain stem.
$e .$ The cell bodies of most parasympathetic postganglionic neurons are in or near the thoracic and lumbar spinal cord.

Rikhil Makwana

Numerade Educator

04:12

Problem 7

Which statement about cells in the visual cortex is not true?
a. Many cortical cells receive inputs directly from single retinal ganglion cells.
b. Many cortical cells respond most strongly to bars of light falling at a specific location on the retina.
$c .$ Some cortical cells respond most strongly to bars of light falling anywhere over large areas of the retina.
$d .$ Some cortical cells receive inputs from both eyes.
$e .$ Some cortical cells respond most strongly to an object when it is a certain distance from the eyes.

Rikhil Makwana

Numerade Educator

04:41

Problem 8

Which of the following characterizes non-REM sleep?
$a .$ Dreaming
$b .$ Circadian rhythms
c. EEG slow waves
$d .$ Rapid and jerky eye movements
$e .$ It makes up about 20 percent of total sleep time

Iva Hall

University of California, Berkeley

02:02

Problem 9

Which conclusion was supported by experiments on splitbrain patients?
a. Language abilities are localized mostly in the left cerebral hemisphere.
b. Language abilities require both Wernicke's area and Broca's area.
$c .$ The ability to speak depends on Broca's area.
$d .$ The ability to read depends on Wernicke's area.
$e .$ The left hand is served by the left cerebral hemisphere.

Christina Sorrentino

Numerade Educator

05:01

Problem 10

In the knee-jerk reflex,
$a .$ spinal interneurons inhibit the motor neuron of the antagonistic muscle.
$b$. activity in the stretch receptor neuron causes contraction of the leg flexor muscles.
$c .$ the cell body of the motor neuron is in the dorsal horn of the spinal cord.
$d$. action potentials in the sensory neuron release inhibitory neurotransmitter onto the motor neurons.
$e .$ the sensory neuron forms a monosynaptic loop with the motor neuron to the antagonistic muscle.

Rikhil Makwana

Numerade Educator