The types of cells that are specialized to communicate with other cells and control their activities are
A. connective tissue cells.
B. epithelial cells.
C. muscle cells.
D. neurons.
E. Two of the choices are correct.
Answer: D
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The continual movement of fluid through the interstitial spaces produced by capillary filtration serves all of the following functions except
A) accelerates the distribution of nutrients and hormones. B) assists the transport of insoluble substances that cannot enter the capillaries. C) helps carry toxins and bacteria to cells of the immune system. D) flushes hormones and wastes from the interstitial spaces. E) increases edema.
What is the correct relationship between receptor tyrosine kinases and Ras proteins?
A) Phosphorylated Ras proteins activate the tyrosine kinase. B) Phosphorylated Ras proteins pair with a tyrosine kinase to activate other proteins. C) Tyrosine kinase dimers phosphorylate the Ras proteins directly. D) Tyrosine kinase dimers use GAPs and GNRPs to regulate Ras proteins.
B-lymphocytes are
A. antibody-producing red blood cells. B. platelets that are generated in the thymus. C. white blood cells that are generated in red bone marrow. D. immune system cells that are generated in the tonsils. E. blood cells found only in people with type B blood.
Bite wounds and falls are examples of ___________________ hazards
Fill in the blank(s) with correct word