Which of the following is a characteristic of a covalent bond?
A) The molecule is always polar B) Electrons are shared
C) Protons are involved in the bond D) Electrons are donated
B
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Which nerve is the most posterior nerve of the brachial plexus?
A) ulnar nerve B) radial nerve C) brachial nerve D) median nerve
What is the whitish portion of the proximal nail body where blood vessels do not show through the layer of keratinized cells?
A) lunula B) nail body C) nail root D) eponychium
How is the concentration of a hormone in plasma determined?
A. only by its rate of secretion B. by the number of its target cells in the body C. only by its rate of synthesis D. by its secretion and clearance rates, and whether or not it binds to carriers and/or other plasma proteins E. only by the rate of its degradation by the liver and kidneys
Answer the following statements true (T) or false (F)
1. Obligatory water reabsorption involves the movement of water along an osmotic gradient. 2. Having a kinked ureter is called renal ptosis. 3. Adipose tissue is one of the most hydrated of all tissues in the human body. 4. The most abundant cation in intracellular fluid is sodium. 5. Electrolytes determine most of the chemical and physical reactions of the body.