Question

why the blood red in colour ??

Answer 1

Solution:-

Blood, is red in color due to the presence of a red pigment called haemoglobin.

$\red{ \mathfrak{Extra \: Information \colon}}$

$\bold{Functions\: of \:blood}$

$\boxed{\mathfrak{Transport\: of\: nutrients}}$

Sugar, amino acids, vitamins and minerals etc are picked by the blood. Plasma from intestine is then transported to different parts of the body

$\boxed{\mathfrak{Transport \:of\: respiratory\:gases}}$

Gases like carbon dioxide and oxygen are transported either forming compound with haemoglobin or being soluble in blood plasma.

$\boxed{\mathfrak{Transport\:of\:waste\: products}}$

Metabolic waste products from various part of body are collected by blood and is brought to excretory organs for excretion.

$\boxed{\mathfrak{Transport \:of\: hormones}}$

Endocrine glands pour the hormone into blood steam to be carried to Target an organ.

$\boxed{\mathfrak{Body\: defence}}$

White blood cell protects body from the attack of foreign germs, microbes and pathogens.

$\boxed{\mathfrak{Blood\: Clotting}}$

Platelets help in blood clotting by plugging place of injury.

Answer 2

$\bf{\huge{\boxed{\underline{\mathfrak{\orange{Answer:}}}}}}$

✴️Blood is red because it is made up of cells that are red, which are called red blood cells.

✴️Within the red blood cells there is a protein called hemoglobin. Each hemoglobin protein is made up subunits called hemes, which are what give blood its red color.

●Blood is the principal circulating fluid in our body.

●It is contained in the heart, and in the blood vessels .

●It is red in colour.

It is due to the presence of the respiratory iron containing pigment called haemoglobin.

● The haemoglobin is the effective chemical constituent of red blood cells .

It is formed of an iron containing part called haemines and the protein called globin.

● Properties of blood:-

♤ It is never stationary .

♤ It is bright red in colour when taken from an artery and dark red when taken from a vein.

♤ It is slightly alkaline. ph value is between 7.3 to 7.45

♤ An average adult human has 5 to 6 litres of blood by volume.

● Functions of blood include:-

1. Transport of digested food from the alimentary Canal to the tissues .

2. Transport of oxygen from the lungs to the tissues .

3. Transport of carbon dioxide from the tissues to the lungs .

4. Transport of excretory material from the tissues to the liver kidney or the skin for elimination .

5. Distribution of hormones directly into the blood .

6. Distribution of heat .

7. Clotting over a wound to cut down loss of blood.

8. White blood corpuscles protect the body from the diseases by engulfing bacteria .

9. It produces antitoxins and antibodies which neutralize the poisonous substances which enter the body .

■ Thus, the main functions of the blood in our body can be treated under two broad headings :

A. Transportation.

B. Protection.