_________ is not a cause of hypothyroidism
a. Lack of TRH
b. An iodine-deficient diet
c. Grave's disease
d. Lack of an enzyme necessary for one of the steps in the synthesis and release of thyroid hormone
e. Lack of TSH
C
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These cells are important in fighting parasitic infections.
A. Monocytes B. Eosinophils C. Neutrophils D. Lymphocytes
What is the function of overlapping endothelial cells in lymphatic capillaries?
A) Overlapping endothelial cells strengthen the walls of the lymphatic capillaries so they are not distorted in tissues. B) Overlapping endothelial cells act as one-way valves that permit the entry of fluids and solutes but prevent their return to the intercellular spaces. C) Overlapping endothelial cells act as one-way valves that permit the exit of fluids and solutes but prevent their entry into the capillary. D) Overlapping endothelial cells allow large proteins to enter the lymphatic capillaries to be transported to the venous system. E) Overlapping endothelial cells produce tight junctions that prevent the movement of lymph into or out of the capillary.
A crystal of calcium phosphate in the cytoplasm of a cell should be classified as an inclusion.
Answer the following statement true (T) or false (F)
Retrograde axonal transport may be responsible for movement of herpes virus, rabies virus, and tetanus toxin from nerve terminals to the cell body.
Answer the following statement true (T) or false (F)