The __________ return blood to the heart and the __________ transport blood away from the heart.
arteries; veins
arterioles; venules
veins; arteries
venules; arterioles
capillaries; arteries
veins; arteries
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Which of the following body systems is not directed entirely toward maintaining homeostasis?
a. reproductive system. b. endocrine system c. nervous system. d. both b and c e. none of the above answers
The intracellular fluid is considered to be electrically neutral because ______.
a. there are no ions within the intracellular fluid. b. there are more positive ions than negative ions. c. there are the same number of positively and negatively charged ions. d. there are more negative ions than positive ions.
Which is an intermediary protein that enables platelets to adhere to collagen?
A. Tissue plasminogen activator (t-PA) B. Activated protein C C. von Willebrand factor (vWF) D. ATP E. Arachidonic acid
An electroencephalogram measures
A. electrical activity in the brain. B. the use of glucose in the brain. C. the production of CSF in the brain. D. blood flow in the brain.