The atrioventricular node, or pacemaker, initiates the electrical impulse that begins each heartbeat
Indicate whether the statement is true or false
FALSE
Explanation: The sinoatrial (SA) node initiates each heartbeat.
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Tai chi can be an effective stress reducer as it
A. teaches students to remain calm and centered. B. is an excellent cardiovascular workout. C. aids the student in working against various stressors. D. is easily self-taught.
Muscle relaxant drugs are useful in treating the pain and inflammation of osteoarthritis of muscle strains, sprains, and "pulled muscles."
Indicate whether the statement is true or false.
Lysis of a pathogen by MAC formation is an example of
A. antibody-dependent cell-mediated cytotoxicity. B. antigen presentation. C. complement fixation. D. neutralization. E. opsonization.
Your risk for illness-from sore throats to peptic ulcers to sudden death-starts to decrease a few weeks after you've stopped smoking.
Answer the following statement true (T) or false (F)