Which term refers to the study of how an organ functions?
A. Anatomy
B. Ecology
C. Homeostasis
D. Physiology
Answer: D
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Which vertebra does not have a body?
A) atlas B) last lumbar C) last cervical D) axis
The mixed cranial nerve that projects to and from internal organs, muscles, and glands is the ________ nerve.
A) vagus B) trochlear C) trigeminal D) glossopharyngeal E) spinal accessory
Which of the following statements concerning cross bridges is not correct? Cross bridges
a. cross bridges bind to actin during muscle contraction. b. cross bridges are formed by the globular heads of the myosin molecules. c. formation is tied to Cl- levels in the cytosol d. cross bridges bend during muscle contraction. e. cross bridges protrude from the thick filaments.
In the proximal tubule, sodium moves from the lumen into the tubule epithelial cell by diffusion through sodium channels.
a. true b. false