Briefly describe the function of a portal vein system (for example, the hepatic portal vein).
What will be an ideal response?
To deliver blood from capillary bed to capillary bed without using the pumping action of the heart.
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Evaluation of the quality of the sputum specimen sent to the laboratory for bacterial culture is best performed by:
a. measuring the amount of mucus found. b. checking for mucus or blood. c. microscopically examining the Gram-stained smear for leukocytes. d. microscopically examining the Gram-stained smear for squamous epi-thelial cells.
The exotoxin produced by C. tetani is
A. tetanoxin. B. exotetanus. C. tetanospasmin. D. endospasmin.
Which of the following species' range has extended extensively over the past 100 years?
A) grizzly bear B) gypsy moth C) polar bear D) spotted owl
Both the neural and endocrine systems play a role in coordinating body activities.
Answer the following statement true (T) or false (F)