Muscular ridges on the inner surface of the ventricles are called
A) coronary sinuses.
B) trabeculae carneae.
C) intercalated discs.
D) papillary muscles.
E) chordae tendineae.
B
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The potential space between the serous membranes surrounding each lung is known as the pleural _________
Fill in the blank with correct word.
The motor pathways of the autonomic nervous system
A) show a neuronal organization like that of the somatic nervous system. B) contain both upper and lower motor neurons. C) control visceral effectors, such as smooth and cardiac muscle and glands. D) include only neurons located in the brain or spinal cord. E) All of the answers are correct.
Which hormone induces its target cells to take up glucose, thereby lowering blood glucose levels?
A. Pancreatic polypeptide
B. Somatostatin
C. Glucagon
D. Insulin
E. Somatotropin
A 22-year-old female is given the results of her blood test and she notices that her calcium levels are high. Which of the following hormones is most likely to be elevated?
A) calcitonin B) thyroid-stimulating hormone C) parathyroid hormone D) prolactin