1. Define the following terms (4): ventricular diastole, ventricular systole, la
ID: 3516815 • Letter: 1
Question
1. Define the following terms (4): ventricular diastole, ventricular systole, laminar blood flow, turbulent blood flow, cardiac rate, venous return, end-diastolic volume, stroke volume, total peripheral resistance, cardiac output 2. What is blood pressure? 3. What are the three factors that determine BP? 4. Describe BP in a normal, a prehypertensive, and hypertensive individual. 5. What instrument is needed to manually measure BP to hear the heart sounds? 6. What are the heart sounds called? Can you describe them? 7. Can you describe how the sounds are produced? 8. What is pulse pressure and how is it calculated? 9. What is mean arterial pressure and how is it calculated? 10. What is the baroreceptor reflex? 11. Why does BP drop when going from a lying position to a standing position? 12. What part of the brain has the vasomotor control center? 13. Can you describe what happens to get the body back at homeostasis when there is an increase in BP 14. Can you describe the response to a drop in BP when someone goes from a lying position to a standing position? 15. Are you comfortable with the flow chart and labelling of images on baroreceptor reflex we did in class'? Check out the baroreceptor reflex section in the textbook (pg. 554-555)Explanation / Answer
Ventricular diastole: It is a part of cardiac cycle during which ventricle refill with blood after emptying during systole. Ventricular systole: It is a period of contraction of ventricle during which blood is pumped in to aorta and pulmonary artery. Laminar blood flow: It is the normal blood flow characterised by concentric layers of blood moving in parallel to blood vessel. Turbulent blood flow: It is the irregular flow of blood with chaotic changes in pressure and flow velocity Cardiac rate: It is the number of contractions of heart per minute. Venous return: It is the rate of flow of blood return to the heart. End diastolic volume: It is the volume of blood in the ventricle at the end of diastole Stroke volume: It is the volume of blood which is pumped out from left ventricle per beat. Total peipheral resistance: It is the resistance to blood flow exerted by all systemic vasculature except pulmonary vasculature Cardiac out put: It is the amount of blood pumped out from left ventricle per minute
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