Question

Q 1 A. Define the following terms.
1. Erythrocytes-
2. Leucocytes-
3. Rh-factor-
4. Capillaries-​

Answer 1

Answer:

An arithmetic progression is a sequence of numbers in which the consecutive terms (beginning with the second term) are formed by adding a constant quantity with the preceding term.

Explanation:

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Answer 2

Answer:

1. It is a red blood cell, which (in humans) is typically a biconcave disc without a nucleus. Erythrocytes contain the pigment haemoglobin, which imparts the red colour to blood, and transport oxygen and carbon dioxide to and from the tissues.
2. White blood cells, also known as leucocytes, are immune cells that circulate in the blood and in the lymphatic system. .
3. Rh factor, also called Rhesus factor, is a type of protein found on the outside of red blood cells. The protein is genetically inherited (passed down from your parents). If you have the protein, you are Rh-positive. If you did not inherit the protein, you are Rh-negative.
4. Capillaries are very tiny blood vessels — so small that a single red blood cell can barely fit through them. They help to connect your arteries and veins in addition to facilitating the exchange of certain elements between your blood and tissues.

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