Pancreatic exocrine secretions:
a. include CCK and secretin
b. include enzymes for carbohydrate, protein and fat digestion
c. are acidic
d. are regulated by gastrin and GIP
e. include insulin
B
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The molecules that stabilize the cell membrane and prevent it from breaking easily are the:
a. phospholipid molecules b. cholesterol molecules c. protein molecules d. all of the above
Select the correct statement about lymphoid tissue.
A) Once a lymphocyte enters the lymphoid tissue, it resides there permanently. B) Lymphoid macrophages secrete antibodies into the blood. C) Lymphoid tissue is predominantly reticular connective tissue. D) T lymphocytes act by ingesting foreign substances.
The coxal bone is known as the
A. collar bone. B. elbow. C. tail bone. D. hip bone. E. forehead.
Which of the following is not a means by which viruses can lead to cellular damage or death?
a. release by the virus of enzymes or toxins that physically injure or disrupt affected cells b. depletion of essential cellular components by the virus c. cellular production of substances toxic to the cell under the dictatorship of the virus d. transformation of normal host cells into cancer cells e. incorporation of the virus into the cell so that the body's own defense mechanisms no longer recognize the cell as part of "normal self" and destroy it