The term light adaptation refers to
a. the changes that occur in the visual pigment system when going from a dark into a light environment.
b. the evolutionary changes that enable a species to maintain a diurnal life style.
c. the changes that occur in visual pigment system when going from a light into a dark environment.
d. none of these.
A
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Which of the following parts of the nephron has two limbs with thick segments and thin segments?
A. proximal convoluted tubule B. nephron loop C. distal convoluted tubule `D. collecting system
Abnormally slow depolarization of the ventricles would most change the shape of the ________ in an ECG tracing
A) P wave B) T wave C) QRS complex D) P-R interval E) R-T interval
The term inotropy refers to the:
A. rate of cardiac contraction. B. control of electrical conduction. C. strength of myocardial contraction. D. degree of ventricular irritability.
Collections of specialized cells and extra-cellular substances around them are known as a(n) __________.
A. organelle
B. tissue
C. organ
D. organism