Answer the following statements true (T) or false (F)
1. Neutrophils are the most numerous leukocytes.
2. Basophils contain histamine granules.
3. Eosinophils are useful against parasitic infections.
4. Monocytes become polymorphonucleocytes.
5. Lymphocytes include the B and T cells.
1. TRUE
2. TRUE
3. TRUE
4. FALSE
5. TRUE
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Which of the following statements is correct with respect to the sites of synthesis of B and T cells?
A) In bony fish, B cells are produced in the kidney or spleen. B) In most vertebrates, B cells are produced in body cells, but in different locations of the body. C) Jawless fish produce T cells in the thymus. D) Bony and cartilaginous fish produce T cells in the gill region, referred to as the thymoids.
The complex network of tiny islands of gray matter in the brain, that upon
receiving incoming sensory impulses responds by activating wakefulness in the cerebral cortex, is the A) limbic system. B) dentate nucleus. C) reticular formation. D) corpora quadrigemina.
Hormone A has entered the cell and binds to a nuclear receptor, while hormone B binds to a membrane receptor on the outside of the cell. Which statement is TRUE? Check all that apply
Hormone A is in the lipid-soluble category. Hormone B is in the lipid-soluble category. Hormone B will stimulate the activation of a G protein. Hormone A will cause the formation of cAMP.
The long plateau in the action potential observed in cardiomyocytes is probably related with ________ staying longer in the cytosol.
A. K+ B. Ca2+ C. Na+ D. Cl- E. Na+, K+, and Ca2+