Which connective tissue contains fibroblasts?
a. blood
b. adipose
c. cartilage
d. bone
e. loose connective tissue
ANSWER: e
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Which is the proper order of organization?
a. Cells, organs, tissues b. Cells, tissues, organs c. Organs, tissues, organs systems d. Organs, cells, tissues e. Tissues, organs, cells.
The process illustrated in Figure 49-2 is representative of:
a. neuroendocrine signaling.
b. paracrine regulation.
c. cAMP as a second messenger.
d. classical endocrine signaling.
e. autocrine regulation.
The receptors in the respiratory center are most sensitive to a small
A) increase in blood carbon dioxide levels. B) increase in blood oxygen levels. C) decrease in blood nitrogen levels. D) decrease in blood oxygen levels. E) increase in blood pH.
Which of the following is considered a housekeeping protein?
A. hemoglobin B. cortisol C. RNA polymerase D. an antibody E. insulin