Exercise Physiology Exam #3 Review

Which of the following functions does the circulatory system serve during PA (in combination with pulmonary)?

• Delivers oxygen to active tissues

• Aerates blood return to the lungs

• Transport heat, by-product of cellular metabolism from body core to skin​

• 1. Delivers fuel nutrients to active tissues​

• Transports hormones, the body’s sophisticated chemical messengers

What valve prevents regurgitation between ventricular contractions?

• Semilunar

• Septum

• Tricuspid

• Bicuspid

High-pressure tubing that conducts oxygen-rich ​
blood to tissues

• Capillaries

• Arteries

• Veins

• Venules

What would a blood pressure of 122/80 be classified as?

• Normal

• Elevated

• Stage 1

• Stage 2

Which of these are NOT mechanical factors that determine myocardial oxygen uptake?

• Heart rate

• Blood pressure

• Myocardial contractility

• Tension development within myocardium

What three products formed from glycolysis in skeletal muscle provide the energy for myocardial functioning?

• Glucose

• Lipids

• Fatty Acids

• Pyruvate

• Lactate

Fill in the blank for the heart impulse transmission

SA node-->_____-->AV node-->AV bundle(Purkinje fibers)-->Ventricles

Cardiac output = _____ x Stroke volume

• Systolic BP

• Diastolic BP

• Heart rate

• Tidal volume

Healthy individuals have ejection fractions ranging between what percentages?

• 10% to 30%

• 30% to 50%

• 50% to 70%

• 70% to 90%

Upon sympathetic activation, ______ glands release epinephrine and norepinephrine to cause general constrictor response except in heart and skeletal muscle blood vessels.

• Thyroid

• Exocrine

• Pituitary

• Adrenal

Tags

NGSS.HS-LS1-3