Which of the following kidney structures are fewest in number?
A. Renal corpuscles
B. Medullary pyramids
C. Major calyces
D. Minor calyces
E. Collecting ducts
C. Major calyces
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The typical resting heart rate beats at __________ beats per minute
Fill in the blank(s) with correct word
What is the most potent stimulus for a positive feedback loop that results in the release of bile by the liver?
A) vagus nerve B) bile salt re-entry into the liver C) cholecystokinin (CCK) D) secretin
The paranasal sinuses, together with other structures of the upper respiratory tract,
A) are where a small percentage of gas exchange occurs. B) form part of the respiratory membrane. C) are involved in filtering, warming, and humidifying incoming air. D) provide a large area for gas exchange between air and circulating blood. E) are lined by a delicate simple squamous epithelium.
Skeletal muscle fibers
a. are some of the longest cells in the body b. are attached end-to-end within a muscle c. contain Z lines within their A bands d. contain only one nucleus e. exhibit characteristics b and c