what is blood? describe the composition and function of blood
Answers
ANSWER
Blood is a specialized body fluid. It has four main components: plasma, red blood cells, white blood cells, and platelets. Blood has many different functions, including: transporting oxygen and nutrients to the lungs and tissues. Bringing waste products to the kidneys and liver, which filter and clean the blood.
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Answer:
Blood is a connective tissue in the human body. Its function is to transport substances all around the body, including waste, glucose, hormones, oxygen, etc. The blood is composed of five major parts:
(i) Red Blood Cells (RBCs): These contain hemoglobin which binds with Oxygen and helps us immensely with cellular respiration and transportation of Oxygen.
(ii) White Blood Cells (WBCs): WBCs help us fight infections and bacteria entering our blood stream through wounds or external injuries. They often protect us from diseases.
(iii) Platelets: These are another type of cells present in the blood. These prevent the blood from flowing out of the body and they clot the our wounds.
(iv) Lymph: This fluid helps is present between intercellular spaces and allows diffusion of different substances into the cells of the body.
(v) Plasma: This comprises 90% of the blood, and contains hormones, nutrients, proteins etc... and helps in transportation of them.
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