Baroreceptors In The Cardiovascular System

Words: 850

Pages: 4

Open Document

In the cardiovascular system of the body, blood pressure is the driving force of blood flow through capillaries, distributing blood to tissues throughout the body. Blood pressure is regulated by the autonomic nervous system through mechanoreceptors on the arterial walls of the carotid arteries and the aorta. These mechanoreceptors are called baroreceptors and they send signals to the brain to keep a regulated blood pressure. Along with baroreceptors, blood pressure is maintained through a system of homeostasis called the baroreceptor reflex. This baroreceptor reflex is the cardiovascular control center in the brain stem that tries to retain blood pressure at persistent levels by generating a swift negative feedback loop. For example, in response to an elevated blood pressure, this negative feedback loop would recognize the …show more content…
The response would lower heart rate and dilate the arterioles in an effort to lower total peripheral resistance, and therefore lower the mean arterial blood pressure. In a situation of someone who has chronic high blood pressure, the set points in the baroreceptor reflex would raise permanently and begin to act as though the high blood pressure set point is the new normal in the body. This is how chronic high blood pressure is unable to reverse by itself, due to high set points in the baroreceptor reflex.
An example of a form of chronic high blood pressure the disease Pulmonary Hypertension. Pulmonary Hypertension is a rare disease in which chronic high blood pressure in the pulmonary arteries and furthermore increased pulmonary vascular resistance can lead to right heart failure. Pulmonary Hypertension is caused by a narrowing of the pulmonary arteries, which makes it more difficult for blood to flow through the lungs,

Hypertension: Hypertension and Blood Pressure Rises Essay

blood pressure, is when the force of the blood against your artery walls is high enough to possibly cause health problems. Hypertension is a result of homeostatic imbalance; the imbalance can be cause by internal or external factors, in the cardiovascular system. There are two types of hypertension, primary hypertension which develops gradually with no identifiable cause, and secondary hypertension develops because of an underlying condition and can appear suddenly. There are some risk factors…

Words 422 - Pages 2

Essay about Cardiovascular: Blood and Cardiac Output

Cardiovascular Fitness Kaye Pierce Personal Fitness 5th period Coach Mills November 24, 2012 Cardiovascular Fitness Cardiovascular fitness also known as cardiorespiratory fitness is the ability of the heart and lungs to supply oxygen-rich blood to the working muscle tissues and the ability of the muscles to use oxygen to produce energy for movement. This type of fitness is a health-related component of physical fitness that is brought about by sustained physical activity. A person’s ability…

Words 703 - Pages 3

Syphilis Research Paper

treatment depends on the severity of the case of syphilis (Vyas). The health of the patient plays a role in the length of treatment as well (Vyas). For an example, a patient with HIV has a compromised immune system. The length of treatment would be longer in a patient whose body has a weakened immune system. Patients who receive treatment in the primary stage of syphilis may experience the Jarisch-Herheimer reaction, according to Dr. Janit Vyas. “This reaction is caused by an immune response to the breakdown…

Words 2095 - Pages 9

Hypertension, Diabetes Essay

hyperosmolar coma. Serious long term complications include cardiovascular disease, chronic renal failure, and retinal damage. Hypertension Hypertension is a long term medical condition in which blood pressure in the arteries is elevated. Hypertension is also known as high blood pressure. It measures the force against the walls of your arteries as your heart pumps blood through your body. The organ systems involved in hypertension are the cardiovascular system, kidneys, and the brain.…

Words 433 - Pages 2

Circulation And Blood Flow

blood pressure decreases as you move away from the heart Resistance in the Venous system is very small and is thus able to return blood to the heart with ease. Capillary Exchange – transfer of liquid and solutes between blood and interstitial fluid; such as Oxygen, CO2, waste. Pressure: BP= blood pressure, CHP = capillary hydrostatic pressure – P in capillary beds (35-18 mmHg), Venous pressure – P in venous system; very low, venule to right atrium is 18 mmHg **∆P across entire systemic circuit…

Words 804 - Pages 4

Arteries Essay

Chapter 21 BLOOD VESSELS & HEMODYNAMICS THERE ARE 5 MAIN TYPES OF BLOOD VESSELS Arteries Arterioles Capillaries Venules Veins Arteries carry blood away from the heart. Large elastic arteries leave the heart and divide into muscular medium sized arteries that branch out into the body. Muscular arteries then divide into small arteries that divide into smaller arterioles. Arterioles in some tissue then divide into capillaries. Gas and nutrient exchange occurs in the thin…

Words 4970 - Pages 20

Baroreceptors

Trigger: You and your two friends work out a system to cheat on your physiology test. (DO NOT DO THIS. This is strictly a make believe story.) The genius friend says she will put one finger on your back for A and two for B. You feel one finger and mark down A and get the question wrong, however your friend feels two and answers correctly. You both were touched in the same location with the same intensity and duration. Why did you misinterpret the touch and your friend didn’t? Explain using a mechanistic…

Words 1780 - Pages 8

Sepsis: Shock and Tissue Perfusion Essay

Overview of Shock Definition Acute, widespread process of impaired tissue perfusion Imbalance btwn cellular oxygen supply and demand An impaired cardiac pump, circulatory system, and/or volume can lead to compromised blood flow to tissues Causes problems with: cellular, metabolic or hemodynamic alteration Etiology Hypovolemic = ↓ in circulating volume Cardiogenic = heart not pumping enough blood to organs Distributive Septic = invasion of bacteria that causes misdistribution of blood…

Words 700 - Pages 3

Blood Vessels Case Study

venous end? (703) The fluid leaves the capillaries at the arterial end because of the net filtration is the pressure of the blood at the end is higher at the arterial end than it is at the venous end. 5. Where are baroreceptors and chemoreceptors located that regulate the cardiovascular system? What changes do they respond to?(704) They are located in the carotid sinus and the aortic arch, and the sense of pressure is changed by responding to the change and build top in the arterial wall. Chemoreceptors…

Words 627 - Pages 3

Adult Health III Essay

(Lactic acid accumulates), lactic acid must be removed by blood and broken down by liver (Requires unavailable O2) Compensatory stage (Nonprogressive stage): Attempt homeostasis, baroreceptors in carotid and aortic bodies activate SNS in response to decreased BP, decreased blood to kidneys activates renin-angiotensin system (RAAS). Progressive stage (Intermediate stage): Begins when compensatory mechanisms fail, aggressive interventions to prevent multi-organ dysfunction syndrome, hallmarks of decreased…

Words 688 - Pages 3