What type of valves are the aortic and pulmonic valves?
A. Papillary
B. Chordis
C. Semilunar
D. Atrioventricular
Answer: C. Semilunar
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Ghrelin is secreted by ________, and increases ________ while decreasing ________.
A. muscle tissue; hunger; growth hormone secretion B. adipose tissue; growth hormone secretion; leptin secretion C. adipose tissue; hunger; fat breakdown D. cells in the stomach; neuropeptide Y secretion; hunger E. cells in the stomach; hunger; fat breakdown
Which of the following does not contribute to the establishment of a vertical osmotic gradient in the interstitial fluid of the renal medulla?
a. The renin-angiotensin-aldosterone system b. Countercurrent multiplication in the long loops of Henle of juxtamedullary nephrons c. Urea recycling between the collecting tubule and long loops of Henle d. All of the above contribute to the establishment of the gradient. e. None of the above contribute to the establishment of the gradient.
Which of the following describes the posterior root ganglion?
A) contains axons of motor neurons B) contains axons of sensory neurons C) contains cell bodies of motor neurons D) contains cell bodies of sensory neurons E) contains interneurons
The coarse and fine adjustment knobs are used to ________
A) nosepiece B) make initial and subsequent focusing adjustments when viewing a specimen. C) secure the specimen on the stage D) illuminate the specimen