Which of the following is correct regarding the spleen? Select one:
a. It changes undifferentiated lymphocytes into competent lymphocytes.
b. It is necessary for life. It can't be removed without causing death.
c. It has additional digestive functions.
d. It produces several different hormones with unknown function.
e. It filters damaged red blood cells from the blood.
Answer: e. It filters damaged red blood cells from the blood.
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A ball is tossed vertically upward from a height of 2 m with an initial velocity of 10 m/s. Just before the ball hits the ground, its velocity will be what?
A. 10 m/s B. less than 10 m/s C. greater than 10 m/s D. not possible to predict
The most important factor affecting the pH of plasma is the concentration of
A) hydrochloric acid. B) carbon dioxide. C) organic acids. D) ketone bodies. E) lactic acid.
________ is the time spent in prenatal development.
Fill in the blank(s) with the appropriate word(s).
What moves the bolus during the esophageal phase of deglutition?
A. Peristalsis B. Segmentation C. Pharyngeal constriction D. The tongue