To measure GFR, an individual's urine is examined for the concentration of a test substance that they received by injection. How is that test substance treated by the kidney?
A. It is filtered, reabsorbed, and excreted, but it is not secreted.
B. It is neither filtered nor reabsorbed, but it is secreted.
C. It is filtered but neither reabsorbed nor secreted.
D. It is filtered and secreted, but not reabsorbed.
E. It is not filtered, but it is secreted and reabsorbed.
C
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The ________ passes through the ________
A) vagus nerve; foramen magnum B) optic nerve; foramen ovale C) vestibulocochlear nerve; external acoustic meatus D) internal jugular vein; jugular foramen E) internal carotid artery; jugular foramen
With increased age, skeletal muscles show
A. a decrease in the number of myofibrils. B. increased glycogen reserves. C. an increase in muscle fiber diameter. D. no change in oxygen storage capability. E. a tendency to fatigue less rapidly.
After eating a large meal, Mr. Davis felt sleepy. Which nervous system dominates and is often called our "rest and digest" division of the autonomic nervous system (ANS)?
A) systemic nervous system B) somatic nervous system C) sympathetic nervous system D) parasympathetic nervous system
Unusually large amounts of smooth muscle and a pseudostratified columnar epithelium are pre-sent in which reproductive structure?
a. Prostate gland b. Rete testis c. Seminiferous tubule d. Tunica albuginea e. Vas deferens