Which of the following statements about blood is false?
A) Blood contains buffers that control pH.
B) The normal pH of blood is 6.8 to 7.0.
C) Blood is more viscous than water.
D) Blood is about 55 percent plasma.
E) Cells in blood comprise the formed elements.
B
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The ease with which the lungs can be expanded during breathing is called ________.
Fill in the blank(s) with the appropriate word(s).
The following are steps involved in transmission at the cholinergic synapse:
1. Chemically regulated ion channels on the postsynaptic membrane are activated. 2. Calcium ions enter the axon terminal. 3. An action potential depolarizes the axon terminal at the presynaptic membrane. 4. Acetylcholine is released from storage vesicles by exocytosis. 5. Acetylcholine binds to receptors on the postsynaptic membrane. The correct sequence for these events is A) 2, 4, 1, 3, 5 B) 4, 2, 1, 5, 3 C) 1, 2, 3, 4, 5 D) 3, 2, 4, 5, 1 E) 2, 5, 4, 1, 3
Which embryological structure gives rise to primordial female germ cells?
A. Gonadal ridges B. Oogonia C. Ovaries D. Embryonic yolk sac E. Neural crest
One of the ultimate effects of insulin is to stimulate protein synthesis within cells of the body.
Answer the following statement true (T) or false (F)