How much urine would be in the urinary bladder to increase the pressure to an uncomfortable point?
A. 500 mL
B. 400 mL
C. 100 mL
D. 300 mL
Answer: A
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Urine is transported from the kidneys to the urinary bladder via the ________
A) urogenital sinus B) urethra C) fundus D) ureter
Which of the following is INCORRECT about the numbers of spinal nerves?
A) 5 pairs of sacral spinal nerves B) 12 pairs of thoracic spinal nerves C) 7 pairs of cervical spinal nerves D) 5 pairs of lumbar spinal nerves
Which of the following statements about the response of arteriolar smooth muscle to changing oxygen partial pressures is TRUE?
A. Both systemic and pulmonary arterioles respond to a decrease in PO2 by constricting. B. Both systemic and pulmonary arterioles respond to a decrease in PO2 by dilating. C. Systemic arterioles respond to a decrease in PO2 by dilating, but pulmonary arterioles constrict in response to decreased PO2. D. Systemic arterioles respond to a decrease in PO2 by constricting, but pulmonary arterioles dilate in response to decreased PO2. E. Changes in PO2 do not affect arteriolar smooth muscle in the pulmonary system.
Explain why the Na+ ions diffuse into the neuron when the Na+ channels open.
What will be an ideal response?