Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN: 9780134580999
Author: Elaine N. Marieb, Katja N. Hoehn
Publisher: PEARSON
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Please fill out 3,4,5 and 6 if possible.
#1 is mechanoreceptor
#2 is dorsal root ganglia
Transcribed Image Text:The beginning of the somatosensory functional pathway has two branches that differ
depending on which type of somatosensory receptor cells are being discussed. In the
first branch,
_1 dendrites, which sense low to moderate amounts of mechanical
energy, are found in the skin and in some internal organs. Their cell bodies are
located in the
_2___ and their axons form
3 and cranial nerves, the dorsal
roots as they enter the spinal cord, and then the dorsal column in the spinal cord.
These axons terminate in the
4 of the medulla. This nucleus projects to the
5 _ of the thalamus, where the modulation of 6 occurs. In the second
branch, 7_ dendrites sensing very high mechanical energy, very high/low
thermal energy, and inflammatory chemicals, along with
low and moderate amounts of 9.
organs. The cell bodies of these neurons are located in the dorsal root ganglia and
their axons form spinal and 10__ nerves as well as the dorsal roots as they enter
the spinal cord. These axons terminate on
the same thalamic nucleus of the first branch. Now, the branches have converged,
and this thalamic nucleus projects to
occurs. Extending into cognition, these cortical neurons project to 15
somatosensory information is combined with visual information to help us
understand
8 dendrites sensing
energy are found in the skin and some internal
11
neurons, whose axons project to
12 _ of the
13
where
14
where
_16_. In addition, those cortical neurons also project to a
17 _, and 18
hypothetical "flavor cortex" where somatosensory,
information are combined to experience the flavor of something we eat. We should,
also consider that the endogenous pain dampening pathway ends with a spinal
interneuron that
19 the axon terminals of
20 _ decreasing or preventing
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