If cardiac output is 16L/min during jogging, and 25% of total blood flow is being diverted to skeletal muscle, how much blood is being delivered to skeletal muscle in L/min? a. 2 b. 5 c. 6 d. 1 e. 4 f. 3
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If cardiac output is 16L/min during jogging, and 25% of total blood flow is being diverted to skeletal muscle, how much blood is being delivered to skeletal muscle in L/min?
2
5
6
1
4
3
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- If Lala has a stroke volume of 70 ml and a cardiac output of 5950 ml/min, what would be her heart rate (in beats/min)?a. 12b. 85c. 5880d. none of theseWhat two values are needed in order to calculate cardiac output (CO) for a ventricle? a. end-diastolic volume (EDV) and end-systolic volume (ESV) b. stroke volume (SV) and blood pressure (BP) c. stroke volume (SV) and heart rate (HR) d. heart rate (HR) and end-diastolic volume (EDAnna is 18 years old, and her resting heart rate is 70 bpm. What is her target heart rate reserve with an exercise intensity of 70%? a. 173 b. 170 c. 166 d. 162
- When you measure blood pressure, the Korotkoff sounds (i.e. the sounds heard through a stethoscope) are produced by? A. turbulent blood flow B. valves closing C. ventricular repolarization D. ventricular depolarization?In a healthy young adult, what happens to cardiacoutput when heart rate increases above 160 bpm?a. It increases.b. It decreases.c. It remains constant.d. There is no way to predictWhy is it necessary to stimulate papillary muscles in the ventricle slightly earlier than the rest of the ventricular wall myocardium? a. to assure rapid conduction speed of the action potential b. to pull on AV valve cusps to prevent backflow c. to assure blood will surge toward the semilunar valves d. to assure coordinated contraction of the ventricular myocardium
- What happens to preload when there is venousconstriction in the veins?a. It increases.b. It decreases.c. It remains constant.d. There is no way to predictOf those listed, which is the largest non-aortic vessel generally used in infant arterial injection? A. Carotid B. Subclavian C. External Iliac D. FemoralIf a patient has cirrhosis of the liver and is unable to produce sufficient albumin and other plasma proteins, then what variable is changed in capillary exchange, and what is the effect? a. There is no change in the capillary exchange process. b. Hydrostatic pressure in the blood decreases, and fluid remains in the blood. c. Colloid osmotic pressure in the capillary increases, and blood volume increases in the blood vessels. d. Colloid osmotic pressure in the capillary decreases, and fluid remains in the interstitial fluid, potentially causing edema.
- Which of these organs is able to tolerate the greatest reduction in blood flow? a. Brain b. Heart c.Skeletal muscles d.SkinIn terms of being open or closed, what is the state of the mitral and tricuspid valve (left and right atrioventricular valves respectively) at the end of the first heart sound? a. Mitral is closed, Tricuspid is open b. Mitral is open, Tricuspid is closed c. Both are closed d. Both are openWhat is responsible for the first heart sound (lub)? A. Contraction of the atria. B. Contraction of the ventricles C. Closing of the atrioventricular valves D. Closing of the semilunar valves