What photosensitive cells within the retina perceive colors?
a. cones
b. rods
c. bipolar cells
d. horizontal cells
e. ganglions
a
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A patient was tested for evidence of dehydration. Which sample would show the earliest signs?
A) Tissues B) Cells C) Blood D) Organs
Afterload is
A. the extent to which ventricular walls are stretched. B. the amount cardiac output must increase during exercise. C. the arterial pressure that the ventricles must overcome to eject blood. D. the name given to an increase in end-diastolic volume. E. another name for venous return.
The first body cavity is called the ________
A) somite B) amniotic cavity C) chorion D) yolk sac E) coelom
Which of the following is NOT part of a nephron?
A. loop of Henle B. collecting duct C. renal corpuscle D. proximal convoluted tubule E. distal convoluted tubule