How many electrons are in the outermost shell of an atom with 15 electrons?
A) 5 B) 2 C) 8 D) 10
Answer: A
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The velocity of blood flow through capillaries is
A. rapid, due to their small total cross sectional area. B. rapid, which prevents pooling in lower extremeties. C. slow, due to small total cross-sectional area, low friction and high pressure. D. slow, which allows sufficient time for exchange of gases and nutrients between blood and tissues.
Nerve impulses leading to the brain carry information about cool temperatures on the skin. The nerve fibers sending these signals will most likely belong to which division of the nervous system?
A) sensory (afferent) division B) somatic nervous system C) sympathetic division D) parasympathetic division
Thick skin contains
A. four epidermal strata and lacks sebaceous glands. B. six epidermal strata and lacks sweat glands. C. five epidermal strata and lacks sebaceous glands. D. five epidermal strata and lacks sweat glands. E. seven epidermal strata and lacks sweat glands.
Which diagnostic test produces an x-ray image of the kidneys and urinary tract using a contrast dye injected intravenously?
A. Cystoscopy B. Intravenous pyelography C. Computed tomography D. Urinalysis