Which blood vessel has the highest concentration of carbon dioxide?
Select one:
a. pulmonary artery
b. pulmonary vein
c. aorta
d. renal vein
e. hepatic portal vein
a. pulmonary artery
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A group of specialized cells of similar structure and function is a(n) ____
a. organ system b. cell cluster c. organ d. tissue e. organism
If you applied a toxin that blocked non-voltage-gated potassium channels (i.e., the potassium "leak channels") in a resting neuron, it would cause the membrane potential to be
A. No change would be observed. B. less negative. C. more negative.
Which of the following hormones is not involved in stimulating spermatogenesis?
a. inhibin b. follicle-stimulating hormone c. interstitial cell stimulating hormone d. luteinizing hormone e. testosterone
The condition where tissue from the uterine lining grows outside the uterus is called ______________
A. endometriosis B. pelvic inflammatory disease C. uterine prolapse D. ectopic pregnancy