An endocrinologist wants to study testosterone levels in a certain group of males. Which of the following best describes sources in which testosterone can be found and used in this study?
A. Blood, urine, and skin
B. Urine only
C. Blood only
D. Blood and urine only
Answer: D
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Increased parasympathetic stimulation
A) causes the pupils to dilate. B) increases heart rate. C) increases gastric motility. D) causes sweat glands to release sweat. E) causes blood vessels in the skin to dilate.
Of the following arteries, which one is more distal to the heart?
A) Superficial palmar arch B) Subclavian artery C) Brachial artery D) Ulnar artery
Two perpendicularly oriented ________ form the centrosome, which is responsible for organizing microtubules during cell division.
Fill in the blank(s) with the appropriate word(s).
The ________ acts as the cell's "post office" by sorting, processing, and packaging materials to be transported within the cell or excreted.
A. rough endoplasmic reticulum B. smooth endoplasmic reticulum C. mitochondria D. Golgi complex