Which of the following best defines dynamic stretching?
a. dynamic stretching features slow, deliberate, controlled motions useful for activity preparation and reducing muscle tightness.
b. dynamic stretching features bouncing and swift motion useful for increasing range of motion.
c. dynamic stretching features stationary stretching useful for increasing muscle power and elongating muscles.
d. dynamic stretching features stationary stretching with a partner useful for increasing muscle potential.

A35-year-old woman comes to the ed complaining of chest pressure. she has had such episodes intermittently over the last 5 years, usually when sleeping, but over the last year she has had more frequent severe symptoms that are occasionally associated with severe migraine headaches. the pain is midsternal and is described as pressure that extends as a band around her chest. the ed physician is initially dubious that the pain is cardiac in origin, because the woman has no coronary disease risk factors. an ecg, however, shows 2mm st-segment elevation and inverted t waves in leads v1 through v5 and 1mm st-segment depression in leads ii, iii, and avf. before the cardiologist arrives in the ed, the patient's ecg has returned to normal. this repeat normal ecg is obtained after the administration of aspirin, nitroglycerin, morphine, and oxygen. which of the following is most likely for these findings? - diffuse intimal thickening with focal areas of atherosclerotic narrowing - intermittent thrombus formation and lysis in the left anterior descending artery - intermittent thrombus formation and lysis in the right coronary artery - plaque rupture and thrombus formation in the left anterior descending artery - transiently increased coronary vascular tone in the right coronary artery

Which practice is harmful to the land? a. using animal waste as fertilizer b. composting with peels from commercial fruit c. throwing paint cans in the garbage d. cutting the lawn with a gas-powered mower

An electric shock can result in anything from a slight tingling sensation to immediate cardiac arrest. the severity depends on the amount of current flowing through the body, the current's path through the body, the length of time the body remains in the circuit, and the current's