Chapter 4, Problem 7RQ

Divide into two groups. One group will argue in favor of the use of ergogenic aids by athletes, and one group will argue against their use. Each group will make a list of ergogenic aids that should be allowed for use by athletes and a list of those that should not be allowed.

Why are open circulatory systems advantageous to some animals? They use less metabolic energy They help the animal move faster They do not need a heart They help large insects develop.

Match the terms with their definition. _____bone marrow a. lymphoid organ in abdomen _____spleen b. cardiac pacemaker _____fibrinogen c. stimulates red cell production _____HDL d. largest artery _____SA node e. a clotting factor _____erythropoietin f. source of all blood cells _____aorta g. delivers cholesterol to the liver for use in bile

50% of the population has which body habitus? a. Hypersthenic b. Hyposthenic c. Asthenic d. Sthenic

The __________ circuit carries blood to and from lungs. a. systemic b. pulmonary

Which of the following statements about albumin is true? It draws water out of the blood vessels and into the bodys tissues. It is the most abundant plasma protein. It is produced by specialized leukocytes called plasma cells. All of the above are true.

Characteristics of veins and venules are: a. thick walls. b. large muscle mass in the walls. c. a large quantity of elastin in the walls. d. low blood volume compared with arteries. e. one-way valves to prevent backflow of blood.

According to Ficks law, gas diffusion is 1. Directly proportional to the thickness of the tissue 2. Indirectly proportional to the diffusion constants 3. Directly proportional to the difference in partial pressure of the gas between the two sides 4. Indirectly proportional to the tissue area A. 1 only B. 3 only C. 4 only D. 2 and 3 only

Which of the following slows the heart rate and AV conduction? A. Resting membrane potential B. Parasympathetic nervous system C. Pacemaker D. Phase 0