Dendritic cells and macrophages enter __________
and alert T cells to threats.
a. the blood circulatory system
b. lymph nodes
c. the bone marrow
d. body tissues
e. the liver
Answer: b
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You are examining a laboratory subject in which blood calcium levels are rising. Predict the consequences for this individual.
A. Blood parathyroid hormone levels would decrease. B. Blood parathyroid hormone levels would increase. C. Blood vitamin D (1,25 dihydroxyvitamin D) would be stimulated. D. Blood calcium levels are not under control by hormones. E. Vitamin D would be converted to vitamin E.
The immune system's attack on the body's own
cells a. is an autoimmune response. b. results in anaphylactic shock. c. is a type of acquired immune deficiency syndrome. d. is due to the inactivation of helper T cells. e. is due to an error in the production of MHC markers.
Why is coat color in Labrador retrievers an example of epistasis?
What will be an ideal response?
lining of the stomach, intestines, gall bladder, fallopian tubes
A. Pseudostratified columnar B. Simple columnar C. Simple cuboidal D. Simple squamous E. Stratified squamous F. Transitional