Which amphiarthrotic joints are characterized by two bony surfaces connected by hyaline cartilage?
a. synchondroses
b. symphyses
c. gomphoses
d. syndesmoses
a
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Which of the following is involved in the relaxation of a muscle cell?
a. Synthesis of ACh by acetylcholinesterase b. Initiation of action potentials c. The troponin-tropomyosin complex slipping back into its blocking position d. Detachment of actin from tropomyosin e. T tubules actively absorbing Ca2+
Which white blood cells function primarily as phagocytotic cells?
A. monocytes and lymphocytes B. basophils and neutrophils C. eosinophils and monocytes D. neutrophils and monocytes
) Select the statement about mixtures that is correct.
A) A solution contains solvent in large amounts and solute in smaller quantities. B) Solutions contain particles that settle out in time. C) Suspensions can change reversibly from liquid to solid. D) Suspensions are homogeneous mixtures of two or more components.
With aging, a loss of inhibitory action potentials to the sacral region of the spinal cord results in
A. increased bladder capacity. B. voluntary micturition. C. continuous dribbling of urine. D. uncontrollable micturition. E. lack of control of internal sphincter.