Blood vessel spasms following an injury are stimulated by
A. parasympathetic impulses.
B. the release of heparin from eosinophils.
C. serotonin released from platelets.
D. the formation of a fibrin clot.
Answer: C
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Which of the following structures is used to reduce friction in joints?
1. Bursae 2. Synovial fluid 3. Accessory ligaments 4. Elastic fibers a) 1 only b) 2 only c) 3 only d) 4 only e) 1 and 2
Generally speaking, connective tissues are largely non-living extracellular matrix. Which of the following is an EXCEPTION?
A) blood B) adipose C) bone D) areolar
The most important factor in decreasing the intracellular concentration of calcium ion after contraction is
A) active transport of calcium across the sarcolemma. B) active transport of calcium into the sarcoplasmic reticulum. C) active transport of calcium into the synaptic cleft. D) diffusion of calcium out of the cell. E) diffusion of calcium into the sarcoplasmic reticulum.
When a lack of sufficient blood pumps to vital tissues, ________________________________________ occurs
Fill in the blank(s) with correct word