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Blood Pressure

One of the vital signs of human beings, blood pressure is the pressure exerted by the blood against the walls of the blood vessels. It varies with the strength of the heartbeat, the elasticity of the arterial walls, the volume and viscosity of the blood, and a person's health, age, and physical condition. Normal adult blood pressure is approximately 120/80 mm/Hg.

2,953 Questions

Will blood viscosity increase or decrease due to a low hematocrit?

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Asked by Wiki User

Blood viscosity will decrease with low hematocrit levels because hematocrit is a measure of the proportion of red blood cells in the blood. With fewer red blood cells, there is less cellular material present, which reduces viscosity.

How might antihistamines affect the blood?

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Asked by GaleEncyofMedicine

Antihistamines can cause side effects like drowsiness and dizziness by crossing the blood-brain barrier. They can also lead to dry mouth, blurred vision, and urinary retention by blocking histamine receptors in the body. In some cases, certain antihistamines may cause changes in blood pressure or heart rhythm, but this is less common.

Is high blood pressure a dominant or recessive gene?

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Asked by Wiki User

High blood pressure is not determined by a single gene, but rather by a combination of genetic, environmental, and lifestyle factors. This means that it is not a simple dominant or recessive trait, as it is influenced by multiple genes working together.

How does carbon monoxide increase blood pressure?

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Asked by Wiki User

Carbon monoxide binds to hemoglobin in the blood more readily than oxygen, leading to decreased oxygen delivery to tissues. This triggers the release of stress hormones that increase heart rate and constrict blood vessels, ultimately raising blood pressure. Over time, this can result in hypertension and put individuals at risk for heart disease and stroke.

What are some factors that increase and decrease blood pressure?

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Asked by Wiki User

Factors that can increase blood pressure include stress, obesity, high salt intake, and smoking. Factors that can decrease blood pressure include regular exercise, a healthy diet, limiting alcohol consumption, and managing stress levels.

What pressure will increase if the presence of plasma proteins in the blood increases?

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Asked by Wiki User

The colloid osmotic pressure (COP) will increase when the presence of plasma proteins in the blood increases. Colloid osmotic pressure plays a crucial role in maintaining proper fluid balance between the blood and tissues, helping to prevent fluid from leaking out of the blood vessels.

What is the principles relating to blood flow and pressure and resistance?

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Asked by LaineBailoniBishop

Blood flow is directly proportional to the pressure difference between two points in a blood vessel and inversely proportional to the resistance in the vessel. This relationship is described by Poiseuille's law, which states that blood flow is equal to the pressure difference divided by the resistance. Systemic vascular resistance is influenced by factors such as vessel diameter, vessel length, and blood viscosity.

Why does pressure increase as elevation increase?

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Asked by Wiki User

Pressure decreases with higher elevation because there are fewer air molecules above exerting a downward force. As elevation increases, the atmosphere becomes thinner, causing less air to be present above a given point, resulting in lower pressure.

Control mechanism that lower blood pressure in response to a rapid rise in blood pressure are called?

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Asked by Wiki User

Baroreceptors are the control mechanisms that detect changes in blood pressure and help regulate it. When there is a rapid rise in blood pressure, baroreceptors signal the body to lower blood pressure by dilating blood vessels and reducing the heart rate.

How are blood pressure and barometric pressure associated?

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Asked by Wiki User

Changes in barometric pressure can affect blood pressure, especially in individuals who have cardiovascular conditions. When barometric pressure drops, it can cause blood vessels to dilate, leading to lower blood pressure. Conversely, when barometric pressure rises, it can cause blood vessels to constrict, resulting in higher blood pressure.

Is blood pressure 91 over 51?

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Asked by Wiki User

Normal blood pressure is 120/80 no matter what your age is.

What is the hearts role in breathing?

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Asked by Wiki User

The heart does not directly play a role in breathing. Instead, the heart's main function is to pump oxygenated blood from the lungs to the rest of the body and deoxygenated blood from the body back to the lungs. This process helps to replenish oxygen levels in the body and remove carbon dioxide.

Why do birds have high blood pressure?

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Asked by Wiki User

Birds have high blood pressure because they need it to maintain adequate circulation during flight. Their high metabolism and unique circulatory system require increased pressure to deliver oxygen and nutrients efficiently to their muscles and organs while in the air.

Do arterial and venous blood mix?

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Asked by Wiki User

Under normal circumstances, arterial and venous blood do not mix because they flow through separate systems of blood vessels. Arterial blood carries oxygenated blood away from the heart to the body's tissues, while venous blood carries deoxygenated blood back to the heart. However, in certain medical conditions or abnormalities, such as a shunt or a congenital heart defect, arterial and venous blood can mix.

Does the thalamus control blood pressure?

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Asked by Wiki User

The thalamus does not directly control blood pressure. It is primarily involved in relaying sensory and motor signals to the cerebral cortex. Blood pressure is mainly regulated by the brainstem and the autonomic nervous system.

120 over 80 blood pressure what is the first number?

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Asked by Wiki User

The first number is called your systolic blood pressure and the second is called your diastolic. The Systolic is the pressure in your arteries when the ventricles are contracting - so it is the maximum pressure that the heart exerts on the arteries. The diastolic is the pressure when the heart is relaxed - so it is the minimum amount of pressure.

An example of a monosaccharide is?

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Asked by Wiki User

Glucose is an example of a monosaccharide. It is a simple sugar that is commonly found in fruits, honey, and as a building block for more complex carbohydrates in our bodies.

What can prohibit you from giving blood?

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Asked by Poptart2nd

Factors that can prohibit you from giving blood include having certain medical conditions such as low iron levels, recent travel to certain countries, recent tattoos or piercings, certain medications, or recent illness. It is important to check with the blood donation center for specific eligibility criteria.

What does the thalamus produce?

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Asked by Wiki User

The thalamus is primarily involved in relaying sensory information to the cerebral cortex. It does not produce any specific substances, as its main role is to act as a relay station for sensory signals.

'can alka seltzer cause your blood pressure to rise?

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Asked by Wiki User

Alka-Seltzer generally does not have a significant impact on blood pressure. However, the sodium content in Alka-Seltzer may affect individuals who are sensitive to high sodium intake, which could potentially lead to temporary increases in blood pressure. It is advised to consult with a healthcare provider if you have concerns about how Alka-Seltzer may affect your blood pressure.

10 meters equals how many inches?

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Asked by Wiki User

1 meter is equal to 39.37 inches, so 10 meters is equal to 393.7 inches.

What effects pressure?

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Asked by Lilproamt88

Pressure can affect the physical properties of gases, liquids, and solids. For gases, pressure influences volume and temperature through the ideal gas law. In liquids, pressure can impact density and boiling point. In solids, pressure can cause compression or expansion, altering the arrangement of atoms and thus changing the material's properties.

The Medulla controls your involuntary actions true or false?

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Asked by Wiki User

True. The medulla oblongata regulates vital involuntary functions such as heart rate, blood pressure, and respiration.

Why is water pressure higher on the first floor of high rising building than the 12th floor?

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Asked by Wiki User

Water pressure decreases with height due to the force needed to pump water that high against gravity. As water travels up a building, the pressure decreases because of the increased distance the water needs to travel. Therefore, the water pressure is typically higher on lower floors compared to higher floors in a high-rise building.

What does high pressure combustion produce?

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Asked by Wiki User

High pressure combustion typically produces greater energy output per unit volume compared to low pressure combustion. This can result in higher temperatures, enhanced combustion efficiency, and increased power generation. However, it can also lead to greater stress on equipment and higher emissions of pollutants.