Human Anatomy (8th Edition)
8th Edition
ISBN: 9780134243818
Author: Elaine N. Marieb, Patricia Brady Wilhelm, Jon B. Mallatt
Publisher: PEARSON
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Chapter 12, Problem 18CYU
From your understanding of the functions of myelin and functions of the white matter tracts of the CNS, explain how the loss of myelination in the CNS, as occurs in multiple sclerosis, can cause the signs and symptoms typical of this disease.
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FLORES DIology Second Semester Review
7. Chi Square Analysis: wild dumpy male x ebony wild female
F1:
All wild wild
F2:
142 wild wild males
52 wild ebony males
46 dumpy wild males
17 dumpy ebony males
151 wild wild females
47 wild ebony females
51 dumpy wild females
8 dumpy ebony females
What pattern of inheritance is observed for body color?
Autosomal recessive
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Sex-linked recessive
Sex-linked dominant
What are the genotypes of the parents in the P generation?
a.
XBYdd x XbXbDD
b. Bbdd x bbDd
c. BBdd x bbDD
d. BBX Y x bbXDY
How many flies in the F2 generation would you expect to express the dumpy wild phenotype?
a.
289.125
b. 97
c. 96.375
d. 293
4. This question focuses on entrainment.
a. What is entrainment?
b. What environmental cues are involved in entrainment, and which one is most influential?
c. Why is entrainment necessary?
d. Assuming that a flash of darkness is an effective zeitgeber, what impact on circadian
rhythms would you expect to result from an event such as the 2024 solar eclipse (assume
it was viewed from Carbondale IL, where totality occurred at about 2 pm)? Explain your
reasoning. You may wish to consult this phase response diagram.
Phase Shift (Hours)
Delay Zone
Advance Zone
Dawn
Mid-day
Dusk
Night
Dawn
Time of Light Stimulus
e. Finally, give a real-world example of how knowledge of circadian rhythms and
entrainment has implications for human health and wellbeing or conservation biology.
This example could be from your reading or from things discussed in class.
Generate one question that requires a Punnet Squre to solve the question. Then show how you calculate the possibilities of genotype and phenotype
Chapter 12 Solutions
Human Anatomy (8th Edition)
Ch. 12 - In which direction are afferent signals carried?...Ch. 12 - What subdivision of the nervous system regulates...Ch. 12 - What type of sensation is (a) pain from a pulled...Ch. 12 - Which type of neuron process receives stimuli?Ch. 12 - Describe how the electrical impulse from one...Ch. 12 - What is the structural type of most sensory...Ch. 12 - Which structural type of neuron is most abundant?...Ch. 12 - Which neuroglia make myelin in the CNS? In the...Ch. 12 - Which neuroglia are common in regions where...Ch. 12 - Do Schwann cells cover nonmyelinated axons in the...
Ch. 12 - Name the connective tissue wrapping that encloses...Ch. 12 - Where do synaspes occur in the CNS, in white...Ch. 12 - Why is white matter white?Ch. 12 - If there is no interneuron in a reflex arc, as in...Ch. 12 - If you touch a hot stove, you reflexively...Ch. 12 - What type of neuronal circuit contains multiple...Ch. 12 - Both peripheral nerves and the white matter of the...Ch. 12 - From your understanding of the functions of myelin...Ch. 12 - What type of neurons form from neuroblasts in the...Ch. 12 - How does the development of sensory neurons...Ch. 12 - Which of the following structures is not part of...Ch. 12 - Match the names of the cells in column B with the...Ch. 12 - Prob. 3RQCh. 12 - Prob. 4RQCh. 12 - An example of an effector is (a) the eye, (b) a...Ch. 12 - Prob. 6RQCh. 12 - A ganglion is a collection of (a) neuron cell...Ch. 12 - A synapse between a terminal bouton and a neuron...Ch. 12 - Myelin is most like which of the following cell...Ch. 12 - Prob. 10RQCh. 12 - Afferent neurons of the PNS synapse in the CNS...Ch. 12 - Prob. 12RQCh. 12 - Prob. 13RQCh. 12 - Place the connective tissue coverings surrounding...Ch. 12 - Define proprioception.Ch. 12 - Prob. 16RQCh. 12 - Prob. 17RQCh. 12 - Distinguish gray matter from white matter of the...Ch. 12 - What is distinctive about the appearance of a cell...Ch. 12 - Describe the differences between neurons and...Ch. 12 - Distinguish a nerve from a nerve fiber and a...Ch. 12 - Prob. 22RQCh. 12 - Draw a reflex arc in place in the nervous system...Ch. 12 - Prob. 24RQCh. 12 - Why are the cell bodies of sensory neurons located...Ch. 12 - Prob. 26RQCh. 12 - Two anatomists were arguing about a sensory...Ch. 12 - An MRI scan and other diagnostic tests indicated...Ch. 12 - Prob. 3CRCAQCh. 12 - Rochelle developed multiple sclerosis when she was...Ch. 12 - Reflexes can be somatic (as in the knee-jerk...Ch. 12 - Prob. 6CRCAQ
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- Briefly state the physical meaning of the electrocapillary equation (Lippman equation).arrow_forwardExplain in a small summary how: What genetic information can be obtained from a Punnet square? What genetic information cannot be determined from a Punnet square? Why might a Punnet Square be beneficial to understanding genetics/inheritance?arrow_forwardIn a small summary write down:arrow_forward
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