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4 years ago

Please help! answer these questions! I give brainliest, I hope yall are doing well in quarantine!

1 answer:

const2013 [10]4 years ago

6 0

Answer: 1. Blood enters the heart through two large veins, the inferior and superior vena cava, emptying oxygen-poor blood from the body into the right atrium of the heart. As the atrium contracts, blood flows from your right atrium into your right ventricle through the open tricuspid valve.

2. Plasma is the main component of blood and consists mostly of water, with proteins, ions, nutrients, and wastes mixed in. Red blood cells are responsible for carrying oxygen and carbon dioxide. Platelets are responsible for blood clotting. White blood cells are part of the immune system and function in immune response.

3.Within the bone marrow, all blood cells originate from a single type of unspecialized cell called a stem cell. When a stem cell divides, it first becomes an immature red blood cell, white blood cell, or platelet-producing cell.

4. Epinephrine and norepinephrine, hormones secreted by the adrenal medulla, raise blood pressure by increasing heart rate and the contractility of the heart muscles and by causing vasoconstriction of arteries and veins. These hormones are secreted as part of the fight‐or‐flight response.

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Aminophylline 0.5 milligrams/kg/hr is prescribed for an 80 kg man; 500 milligrams in 500 ml infusion is prepared. At what rate s

Alja [10]

Here, the rate of infusion is 40mLs/hr.

<h3>What is Infusion?</h3>

An infusion may be defined as a process of being extracted some compounds from original products.

To find the dose required = 0.5 (mg) x patient weight (kg)

= 0.5mg x 80 = 40mg

Available Aminophylline is 500mg in 500 mLs = 1mg in a mL

To find the actual rate of infusion = $\frac{40 * 500 mL }{500}$

= $\frac{40 mg * 1ml}{1 mg}$ = 40mLs/hour.

Therefore, the rate of infusion is 40mLs/hr.

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7 0

2 years ago

When fibers of the vagus nerve stimulate the heart, the heart rate increases.

Travka [436]

Answer:

The asnwer is B. False

Explanation:

When the vagus nerve stimulates the heart, the heart rate tends to decrease (reduction). The heart has an autonomic innervation, that is, it is under the autonomous control of the sympathetic and parasympathetic (vagal) systems that exert their action through the cardiac plexuses that are at the base of the heart.

3 0

3 years ago

the nurse is teaching a patient about ways to reduce blood pressure. what will the nurse include in these instructions?

enot [183]

The nurse is teaching a patient about ways to reduce blood pressure. the nurse will <u>ensure that your diet has an adequate daily intake of calcium</u>.

<h3>What can high blood pressure lead to?</h3>

By making your arteries less elastic, high blood pressure can harm them, which reduces the flow of blood and oxygen to your heart and increases the risk of heart disease. Additionally, reduced blood supply to the heart can result in: angina, or chest pain.

Aside from obesity, diabetes, stress, inadequate potassium, calcium, and magnesium intake, a lack of physical activity, and persistent alcohol use can all increase the risk of developing essential hypertension.

<h3>The main cause of high blood pressure</h3>

High blood pressure is frequently brought on by consuming excessive amounts of salt, fat, or cholesterol. Chronic diseases include conditions including kidney and hormone problems, diabetes, and high cholesterol. Especially if your parents or other near relatives have high blood pressure, consult your family history.

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4 0

2 years ago

The AV node is located

Musya8 [376]

Answer:

a. in the bottom of the atrium just above the ventricles

Explanation:

AV node -

It helps to control the heart rate , it serves as an electrical relay station , reduces the electrical current which is sent by the SA node .

The location of the AV node , is at the lower back section of the inter atrial septum , and conducts the electrical impulse normally from the atria to ventricles .

3 0

3 years ago

This is for my vet med class. Please help thank you!

klio [65]

1. Acceptance
2. Bargaining
3. Guilt
4. Denial
5. Acceptance
6. Anger

8 0

3 years ago