6. 1. Which of the following is likely during vigorous exercise? (1 point) (a) Blood will be diverted to the digestive organs 3. (b) The skin will be cold and clammy (c) Capillaries of the active muscles will be engorged with blood (d) Blood flow to the kidneys increases 2. Which one of the following statements correctly defines the term cardiac output? (1 point (a) Heart rate + stroke volume cardiac output (b) Cardiac output-heart rate-stroke volume Cardiac output-heart rate x stroke volume (d) Stroke volume x vital capacity - cardiac output The ECG (electrocardiogram) is a graphic record of: (1 point) (a) The heart's activity (b) Brain activity. A measure of cardiac output (d) Renal function 4. What ECG wave represents ventricular repolarization? (1 point) (a) U wave (b) P wave (c) Q wave T wave 5. Which of the following statements best describes homeostasis? (1 point) (a) Keeping the body in a fixed and unaltered state (b) Dynamic equilibrium (c) Maintaining a near-constant internal environment (d) Altering the external environment to accommodate the body's need When the environmental temperature increases moderately, what happens to the bl skin? (1 point) (a) It decreases because the local thermo-receptors in the skin sense an increas temperature (b) It increases because the sweat glands release vasodilators Olt increases as part of the body temperature regulatory mechanisms (d) It increases as the metabolic needs of the skin tissue increases Which of the following describes the blood vessels, sweat glands, and temper period of exercise? (1 point) (a) Blood vessels-constricted; Sweat glands-inactive; Skin temperature-la (b) Blood vessels-constricted; Sweat glands-inactive; Skin temperature- (c) Blood vessels-constricted; Sweat glands-active; Skin temperature-le (d) Blood vessels-dilated; Sweat glands-active; Skin temperature-high hich response to over-calling does not involve muscle contraction? (L (a) Blood vessels narrowing (b) Hairs standing up c) Shivering d) Reduced sweating