Suppose that you were involved in an automobile accident and suffered a back injury. When examined by your physician you are told that you have a slipped disc in the lower back. What type of tissue is involved?
A. Adipose tissue
B. Bone
C. Elastic cartilage
D. Fibrocartilage
E. Dense regular connective tissue
D
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Which of the following is not considered an upper respiratory infection?
a. Rhinitis. b. Pharyngitis. c. Laryngitis. d. Bronchitis.
Which of the following does NOT describe enzymes?
A) Enzymes work by raising the energy of activation. B) Some enzymes are purely protein. C) Some enzymes are protein plus a cofactor. D) Each enzyme is chemically specific.
RNA is usually ________ -stranded.
Fill in the blank(s) with the appropriate word(s).
In the renin-angiotensin-aldosterone pathway that regulates blood pressure, renin is controlled in the following ways EXCEPT
A) Juxtaglomerular cells themselves can sense pressure changes and release renin when blood pressure declines. B) Decreases in blood pressure activate sympathetic neurons in the medulla oblongata, triggering renin secretion. C) Macula densa cells in the wall of the distal tubule respond to a decrease in urine flow and Na+ delivery by releasing a paracrine signal that leads to renin secretion. D) Decreased perfusion of the lung leads to the production of angiotensin-converting enzyme, or ACE, that directly leads to renin secretion.