The posterior communicating arteries connect the
A. internal carotid arteries and posterior cerebral arteries.
B. middle cerebral arteries and posterior cerebral arteries.
C. posterior cerebral arteries and anterior cerebral arteries.
D. middle cerebral arteries and anterior cerebral arteries.
Answer: A
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Which of the following factors is most important in matching the blood flow through a specific tissue with the metabolic needs of that tissue?
a. sympathetically induced vasoconstriction of the arteries supplying a tissue forces more blood to flow into the tissue. b. parasympathetically induced vasodilation of the capillaries within a tissue allows more blood to flow into the tissue. c. local changes within a tissue resulting from increased metabolic activity can produce local arteriolar vasodilation to allow more blood to flow into the tissue. d. widespread venous vasoconstriction allows blood to dam up at the tissue level. e. the amount of blood flowing through each tissue remains constant through reflex controls to ensure that metabolic needs are continuously met.
Determine the correct order of the structure of the filtration membrane from deep to superficial
A) podocytes, basal lamina, fenestrated glomerular capillary endothelial cells B) basal lamina, podocytes, fenestrated glomerular capillary endothelial cells C) fenestrated glomerular capillary endothelial cells, basal lamina, podocytes D) fenestrated glomerular capillary endothelial cells, podocytes, basal lamina
The ________ contains the sensory receptors for hearing
A) eustachian tube B) cochlea C) ampulla D) vestibule
The acidity of sweat contributes to the acid mantle that inhibits bacterial growth in the skin
Indicate whether the statement is true or false