Which of the following connective tissue cells produces collagen?
A) adipocytes
B) fibroblasts
C) macrophages
D) mast cells
E) lymphocytes
B
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The time period between fertilization and implantation is approximately
A. 5 days. B. 7 days. C. 10 days. D. 14 days. E. 21 days.
The part of the hair that extends beyond the skin surface is called the
A. bulb. B. papilla. C. alopecia. D. root. E. shaft.
The chloride shift refers to the
A. effect of chloride ions on the oxygen dissociation curve. B. exchange of chloride ions for bicarbonate ions across the red blood cell membrane. C. exchange of chloride ions for carbon dioxide across alveolar cell membranes. D. effect of chloride ions on hydrogen ion diffusion from red blood cells. E. exchange of chloride ions for hemoglobin across the RBC membrane.
Identify the region of the humerus that articulates with the ulna.
A. Capitulum B. Medial epicondyle C. Trochlea D. Head