Which vessels return oxygenated blood to the left atrium of the heart?
A) pulmonary arteries
B) superior vena cava
C) aorta
D) pulmonary veins
E) inferior vena cava
D
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The pancreatic islets produce:
a. thyroxine. b. insulin. c. epinephrine. d. parathormone.
Which of the following is the correct order of elements in a control system?
a. receptor, stimulus, afferent pathway, control center, efferent pathway, effector, response b. receptor, stimulus, efferent pathway, control center, afferent pathway, effector, response c. effector, stimulus, efferent pathway, control center, afferent pathway, receptor, response d. stimulus, receptor, afferent pathway, control center, efferent pathway, effector, response e. stimulus, receptor, efferent pathway, control center, afferent pathway, effector, response Human Body
Which of the following statements about the citric acid cycle is false?
A. The process occurs in the mitochondria. B. The major end product of the cycle is lactic acid. C. At several steps, NADH molecules are formed. D. Carbon dioxide is produced at several steps in the cycle. E. Two ATP are formed in the cycle from one glucose.
Which of the following could describe the function of 11 Beta-hydroxysteroid dehydrogenase?
A) It aids in preventing crossover effects from cortisol. B) An enzyme located in renal tubules that acts on cortisol . C) It converts cortisol to a less active form. D) It converts cortisol to a form with a lower specificity for mineralocorticoid receptors there. E) All of these answers are correct.