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Unit 4 Coronary/Vein
PSG 111
| Question | Answer |
|---|---|
| What is laminar flow? | smooth flow of blood |
| What is aneurysm? | weak portion of a dilate artery |
| If urine production increases what happens to BP and blood volume? | BP increasee and blood volume increases |
| Short-term Bp is regulated by! | Adrenal medulary mechanism, barorectors, CNS and Chemoreceptors. |
| What is the main goal of barorectors and Chemoreceptors? | barorectors maintain homestasis and Chemoreceptors ensure oxygen levels to brain and heart.(emergency)Reg PH &Co2 levels. |
| whattriggers the adrenal medualary mechanism? | exercise and stress It increases the sympathic stimulation. |
| what triggers baroreceptors? | changes in the corotid artery and the aorta which affects BP levels. |
| List the functions of the peripheral circulation. | (REDCAT)Regulate blood flow,Exchange substances,Direct blood flow,Carry blood and Transport substances. |
| List the functions of long-term BP regulations. | Renin-Angiotension, Vasopression, Atrial naturaldiretics, Fluid shifts and relaxation response. |
| What does Epinephrine and Nepinephrine do when released from adrenal medualary mechanism? | Increase heart rate and stroke volume(contraction) |
| How is long-term regulation of blood flow through tissues accomplished? | Long-term regulation of blood flow is determined by adequate amount of oxygenated blood flow in the arteries and the metabolic needs of the body. |
| Cardiac Output? | (CO) amount of blood pump by heart in one minute = HR X stroke volume. The CO =HR x SV. |
| Describe the factors that determined mean arterial pressure. | MAP = CO X PR or MAP = HR xSV. |
| Where are the baroreceptors for carbon dioxide, PH and oxygen located? | They are located in large arteries (neck, thorax carotid) aortic arch and carotid sinus. |
| Define long-term regulation of blood pressure. | Long-term blood pressure is regulated by the kidneys. |
| What fibers of the sympathetic nervous system regulate the activity of the smooth muscle in muscular arteries. | Vasomotor fibers |
| Blood Pressure in the Capillaries is? How many layers are in the capillaries. | Blood pressure is relatively low in the capillaries. Capillaries have one layer and veins and arteries have 3 layers. |
Created by:
1958abba
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