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Chapter 33: Q.37 (page 946)
Why are negative feedback loops used to control body homeostasis?
Negative feedback loops used to control body homeostasis because they keep the balance inside our body.
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Why are intercalated discs essential to the function of
cardiac muscle?
a. The discs maintain the barriers between the cells.
b. The discs pass nutrients between cells.
c. The discs ensure that all the cardiac muscle cells
beat as a single unit.
d. The discs control the heart rate
Which type of epithelial cell is found in the urinary bladder?
a. squamous
b. cuboidal
c. columnar
d. transitional
Which of the following is not true about acclimatization?
a. Acclimatization allows animals to compensate for changes in their environment.
b. Acclimatization improves function in a new environment.
c. Acclimatization occurs when an animal tries to reestablish a homeostatic set point.
d. Acclimatization is passed on to offspring of acclimated individuals.
Which of the following statements about types of epithelial cells is false?
a. Simple columnar epithelial cells line the tissue of the lung.
b. Simple cuboidal epithelial cells are involved in the filtering of blood in the kidney.
c. Pseudostratisfied columnar epithilia occur in a single layer, but the arrangement of nuclei makes it appear that more than one layer is present.
d. Transitional epithelia change in thickness depending on how full the bladder is.
What is the relationship between BMR and body size? Why?
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