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stions
1. What is the function of platelets in the blood ?
2. What is the liquid part of the blood called ?
3. Which blood cells fight against the germs that may enter our body?
4. (a) Which blood cells carry oxygen in the body?
(b) What substance in these cells actually carries oxygen ?
5. Name the red pigment which carries oxygen in blood.
6. What is the function of red blood cells?
7. Which blood cells help in the clotting of blood ?
8. Which part of blood carries digested food ?
9. What is the function of haemoglobin present in red blood cells ?
10. (a) Name one useful substance transported by blood.
(b) Name one waste product transported by blood.
11. Write the full form of (a) RBC, and (b) WBC.
12. Name the organ which pumps blood in the human body.
13. What do the greenish-blue lines just below our skin on hands and legs represent?
14. Which of the two lie deeper under the skin : arteries or veins ?
15. What is the name of blood vessels which connect the arteries to veins ?
16. Veins and arteries carry blood. Which of these carry
blood :
(a) away from the heart?
(b) back to the heart?
17. Which side of the heart (left or right) has :
(a) carbon dioxide rich blood ?
(1)
nigh blood ?
Answers
Answer:
1. it cures humans by blood clotting
2.plasma
3.white blood cells
4.red blood cells
b.plasma
5. haemoglobin
6.red blood cells Carries oxygen
7.platelets
8.plasma
9. it gives the blood red in colour and it is rich in iron
10. oxygen
b. urea
11 . red blood cells , white blood cells
12. heart
13. veins that are transporting blood
14. arteries
15. pulmonary artery
16. veins b. arteries
17. left side
Answer:
1. The function of platelets is to aid in the blood clotting process.
2. Plasma.
3. White blood cell.
4. a. Red blood cells.
4. b. Hemoglobin is the substance within one’s red blood cells that actually carries oxygen.
5. Hemoglobin .
6. Red blood cell.
7. Platelets.
8. Plasma.
9. Hemoglobin is a protein and the respiratory pigment found in red blood cells. The main function of hemoglobin is to carry oxygen throughout our body. It also transports some amount of carbon dioxide from different parts of the body to the lungs.
10. a. Listed below are some substances transported in the plasma: • water – dissolves substances such as glucose for transport and fibrinogen which may be used later in clotting • proteins – some are used to buffer the pH of the blood • glucose – on its way to releasing energy in respiration.
10. b. Plasma, also called blood plasma, the liquid portion of blood. Plasma serves as a transport medium for delivering nutrients to the cells of the various organs of the body and for transporting waste products derived from cellular metabolism to the kidneys, liver, and lungs for excretion.
11. a. Red Blood Cells.
11. b. White Blood Cells.
12. The human heart is an organ that pumps blood throughout the body via the circulatory system, supplying oxygen and nutrients to the tissues and removing carbon dioxide and other wastes.
13. The greenish-blue lines below our skin on hands and legs represent the presence of blood veins in our body.
14. In arteries, blood passes through high blood pressure whereas, in veins, blood passes through low blood pressure.
15. Capillaries are small, thin blood vessels that connect the arteries and the veins.
16. a. The main arteries & veins which carry oxygenated blood away from the heart.
16. b. Ventricles carry deoxygenated blood to the heart.
17. The left side of your heart is your left side and the right one is your right side.