During isovolumetric contraction, the pressure in the ventricles ________.
A) falls and then rises
B) remains constant
C) falls rapidly
D) rises and then falls
E) rises rapidly
(
Question 2) Which of the following does not contribute to water conservation?
A) The collecting duct
B) Diuretics
C) The countercurrent exchange system
D) The countercurrent multiplier
E) The length of the nephrons
(
Question 3) The urine is most likely to be hypotonic when the ________.
A) body's pH is low
B) body's water volume is high
C) output of antidiuretic hormone is high
D) output of natriuretic peptides is high
E) person is lost and deprived of drinking water
(
Question 4) Isovolumetric contraction occurs during the ________ of the electrocardiogram.
A) T wave
B) P wave
C) R wave
D) P-Q segment
E) S-T segment
(
Question 5) If a cell has 1 adrenergic receptors, it is sensitive to ________.
A) alpha adrenaline
B) acetylcholine (ACh)
C) norepinephrine (NE)
D) nicotine
E) adrenaline
(
Question 6) Which renal structure is responsible for producing hypertonic urine by reabsorbing water while allowing metabolic wastes and NaCl to pass through?
A) Glomerulus
B) Collecting duct
C) Nephron loop
D) Proximal convoluted tubule
E) Distal convoluted tubule
(
Question 7) Which of the following is not a characteristic of the enteric nervous system?
A) It innervates glands.
B) It innervates smooth muscle.
C) Its reflex arcs are associated with the spinal cord.
D) It does not arise from the brainstem.
E) It does not arise from the spinal cord.
(
Question 8) White rami carry ________ neurons, while gray rami carry ________ neurons.
A) myelinated preganglionic; myelinated postganglionic
B) myelinated preganglionic; unmyelinated postganglionic
C) myelinated postganglionic; unmyelinated preganglionic
D) unmyelinated postganglionic; myelinated preganglionic
E) unmyelinated preganglionic; myelinated postganglionic
(
Question 9) Mitral valve prolapse causes blood to leak back into the ________ when the ventricles contract.
A) aorta
B) pulmonary arteries
C) left atrium
D) right atrium
E) pulmonary trunk
(
Question 10) Damage to the ________ may affect near vision accommodation.
A) cardiac plexus
B) facial nerve (CN VII)
C) celiac ganglion
D) oculomotor nerve (CN III)
E) glossopharyngeal nerve (CN IX)
Quick Reply
