The AV valve controls the amount of blood entering the atrium from the venous system
Indicate whether the statement is true or false
F
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About 90% of the cells in the CNS are ____________________ cells
Fill in the blank(s) with correct word
Which of the following effectors is NOT controlled by the autonomic nervous system?
A) skeletal muscle B) smooth muscle C) cardiac muscle D) glands
For a B cell to be activated, it must __________.
a. be bound by a helper T cell at a class II MHC and bind an antigen to a surface antibody b. bind an antigen to a surface antibody c. undergo the process of opsonization d. be bound by a helper T cell at a class II MHC
Which is NOT an effect of parathyroid hormone?
A. increases the bone-degrading activity of osteoclasts B. decreases reabsorption of calcium by the kidneys C. promotes vitamin D synthesis, leading to increased intestinal absorption of calcium D. increases plasma [Ca2+] E. decreases reabsorption of phosphate by the kidneys