Which muscle cells have the greatest ability to regenerate?
A) no muscle can regenerate
B) smooth
C) skeletal
D) cardiac
B
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A person has an infection of the middle ear structure that equalizes external and internal pressure, which makes it difficult for the eardrum to vibrate with incoming sound. Which structure(s) should care address?
A. Ossicles B. Eustachian tube C. Semicircular canals D. Tympanic membrane
Explain what MALT is and give a couple of examples? What role does it play in the body's defenses?
The long plateau phase of the cardiac muscle action potential is due to
A) movement of fewer sodium ions across the cell membrane. B) calcium channels remaining open. C) increased membrane permeability to potassium ion. D) decrease in the amount of calcium diffusing across the membrane. E) increased membrane permeability to sodium ions.
Outside of vertebrates, the octopus has the largest brain to body ratio
Indicate whether the statement is true or false