Which of the following is a proton donor?
A. A salt
B. An acid
C. A base
D. Glucose
E. A neutral substance
Answer: B
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The ________ is the connective tissue covering of a fascicle.
Fill in the blank(s) with the appropriate word(s).
Breathing rate increases during exercise due to
A) a joint reflex. B) stimulation of the respiratory areas by decreasing blood concentration of oxygen and increasing blood concentration of carbon dioxide. C) all of the above. D) signals from the cerebral cortex to the respiratory areas when it also signals skeletal muscles to contract.
Which cells are considered pluripotent?
a. neurons b. tissue-specific stem cells c. embryonic stem cells d. both b and c e. none of these answers.
Which type of connective tissue has the least amount of collagen?
a. reticular b. regular fibrous c. irregular fibrous d. elastic