Intrapleural pressure must be ________ intrapulmonary pressure to keep the lungs inflated.
A. greater than
B. less than
C. the same as
Answer: B
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Part complete During childbirth, the initial stimulus that causes the onset of uterine contractions is followed by additional contractions that amplify the effect until the baby is born. This is an example of a __________.
Fill in the blank(s) with the appropriate word(s).
What is found between the preganglionic neuron and postganglionic neuron of a visceral reflex arc?
A) target cell B) spinal cord C) autonomic ganglion D) central nervous system (CNS)
The figure illustrates keratinization in the epidermis. What layer of the epidermis is "A"?
A. stratum granulosum B. stratum lucidum C. stratum spinosum D. stratum basale E. stratum corneum
Which of the following would increase resistance to blood flow?
A. a decrease in the length of the vessel B. a decrease in the number of red blood cells C. a decrease in blood viscosity D. a decrease in the radius of the vessel E. a decreased hematocrit