Which blood vessel has a thicker tunica media?
A. Capillary
B. Vein
C. Artery
D. The tunica media is the same size in all vessels.
Answer: C
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During excitation-contraction coupling,
a. the action potential travels down the T tubules b. Ca2+ is released from the sarcoplasmic reticulum c. Ca2+ is taken up by the sarcoplasmic reticulum d. both a and b occur e. both a and c occur
During the act of drinking water, the desire for water is usually inhibited by
A. Distension of the stomach B. Hormones secreted by stomach cells C. Changes in intracellular fluid concentration D. Changes in extracellular fluid concentration
The acromion is an anatomical feature of the ________.
A. ulna B. scaphoid C. pollex D. clavicle E. scapula
The delivery of a radioactive compound to the body to study the metabolism of tissues is called
A. MRI. B. PET. C. DSA. D. DSR.