Melatonin is produced by the
A) thymus.
B) pineal gland.
C) kidneys.
D) skin.
E) heart.
B
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Which of the following bones articulates with the scapula?
a) Thoracic vertebra b) Humerus c) Sacrum d) Tibia e) Sternum
During most of ventricular diastole, the
A) ventricles are contracting. B) AV valves are closed. C) the ventricles are filling. D) atria are contracting. E) pressure in the ventricles does not change.
The muscular system develops from the ________.
Fill in the blank(s) with the appropriate word(s).
Answer the following statements true (T) or false (F)
1. Loss of skin elasticity is a clinical sign of overhydration. 2. Overhydration can be caused by a too rapid infusion of intravenous fluids. 3. One of the results of overhydration is to put too heavy a burden on the kidneys. 4. Fluid balance implies that both total volume and distribution of water remain normal. 5. The most abundant substance in the body is water.