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how do capillaries differ in structure from arteries and veins?

a. capillaries have smoother muscle tissue than veins.
b. capillaries appear to have a larger diameter than veins
c. capillaries have valves which are absent in arteries.
d. capillaries are only one cell thick and lack smooth muscle.

What is the difference between muscular strength and muscular endurance? a. strength refers to mobility of joints, while endurance refers to muscular force. b. strength refers to percentage of body fat, while endurance refers to sustaining activity over time. c. strength refers to muscular force, while endurance refers to sustaining activity over time. d. strength refers to the quality of physical performance, while endurance refers to mobility of joints.

Mario was conducting research regarding the treatment of aids victims using stem cells. he found a source that was written recently and the author was known. unfortunately, he could not determine if it had been peer reviewed.

The federal child abuse prevention and treatment act (capta; 42 u.s.c.a. § 5106g) makes it mandatory for parents, guardians, and professionals dealing with children to all acts of child abuse they encounter.