Before a B lymphocyte can secrete antibodies it must transform into which of the following?
A. Stem cell
B. Plasma cell
C. Antigen-presenting cell
D. Reticular cell
E. Helper T cell
B. Plasma cell
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Which factor would result in bronchoconstriction?
a. sympathetic stimulation b. parasympathetic stimulation c. epinephrine secretion d. increased carbon dioxide concentration e. None of the above
Which of the following does not contribute to seminal fluid?
A) seminal glands B) prostate gland C) nurse cells and epididymis D) spermatic cords E) bulbo-urethral glands
Oxygenated blood returns to the heart from the lungs via four pulmonary ____
a. arteries b. arterioles c. veins d. venules
Which of the following is the result of the immature kidneys in the neonate?
A) fetal blood vessels close B) high urinary water loss C) fast heart rate D) poor thermoregulation E) defecation mainly fetal debris