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.
D
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One of the key features of epithelial tissue that differentiates it from the other three types of tissue is
A) the density of the tissue, with cells connected very closely. B) semipermeability. C) its ability to reproduce. D) the ability to carry large amounts of oxygen. E) its control over the other tissues.
Which of the following is an example of simple columnar epithelial tissue?
a) epidermis/skin b) tubules/kidney c) lining/gastrointestinal tract d) lining/blood vessels
What best describes the Broca's area?
A) Broca's area is usually found in the right cerebral hemisphere. B) Broca's area houses personality, decorum, and behavior. C) Broca's area is housed in the temporal and parietal lobes. D) Broca's area is a premotor area for speech sounds.
The term pneumothorax refers to accumulation of air in the
A) alveoli B) bronchi C) pericardial space D) pleural space