Which of the following is one of Cannon's "internal secretions"?
A) inorganic ions
B) nutrients
C) hormones
D) water
E) None of the answers are correct.
C) hormones
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When our inner ears convert sound energy into neural impulses or our retinas convert light into neural impulses,
A. no heat is generated, and so it is an exception to the first law of thermodynamics. B. it is an exception to both laws of thermodynamics, because no usable energy is lost. C. it is consistent with the second law of thermodynamics, but an exception to the first. D. the conversion is consistent with both laws of thermodynamics.
Which of the following is a characteristic of smooth muscle?
A. Intercalated discs connect adjacent cells B. Found in the walls of the digestive tract C. Attached to the skeleton by tendons D. Fibers are striated in appearance
The digestive juice that contains enzymes capable of digesting all major food groups is
A. gastric juice. B. biliary juice. C. salivary juice. D. pancreatic juice. E. hepatic juice.
Which of the following surrounds some (or many) axons, providing insulation that increases conduction speed?