Question

Answer the following in short :-

1. Name the nerve which carry oxygenated blood from heart to various parts of body.

2. Name the thinnest vessel which carry blood to individual cells.

3. In a healthy person, what is the normal pulse rate.

4. Name the scientist who discovered blood groups.

5. In how many groups human blood is categorised?​

Answer 1

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1. Systemic arteries transport oxygenated blood from the left ventricle of the heart to the rest of the body. 
2. Capillaries is the thinnest vessel which carry blood to individual cells.
3. A normal resting heart rate should be 60–100 beats per minute.
4. Karl Landsteiner
5. All humans and many other primates can be typed for the ABO blood group. There are four principal types: A, B, AB, and O. 

Answer 2

Explanation:

1. Answer :

The pulmonary veins carry oxygenated blood from the lungs into the left atrium where it is returned to systemic circulation. The aorta is the largest artery in the body. It carries oxygenated blood from the left ventricle of the heart into systemic circulation.

2. Answer :

Capillaries. Capillaries are the shortest, narrowest, and thinnest blood vessels. They connect arterioles to venules to complete the circuit. Capillaries consist only of endothelium with some connective tissue binding the cells.

3. Answer :

Your pulse rate is the number of times your heart beats per minute. A normal resting heart rate should be 60–100 beats per minute, but it can vary from minute to minute.

4. Answer :

Karl Landsteiner discovered the four blood groups.

5. Answer :

All humans and many other primates can be typed for the ABO blood group. There are four principal types: A, B, AB, and O. There are two antigens and two antibodies that are mostly responsible for the ABO types. The specific combination of these four components determines an individual's type in most cases.

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