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Blood Composition

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Questions and Answers

What is the main function of haemoglobin in erythrocytes?

Defense against pathogens
Osmotic balance
Carrying oxygen (correct)
Blood coagulation

What is the approximate lifespan of erythrocytes in the human body?

180 days
120 days (correct)
60 days
240 days

What is the main function of thrombocytes (platelets) in the blood?

Blood coagulation (correct)
Osmotic balance
Carrying oxygen
Defense against pathogens

What is the term for the classification of leukocytes (WBC) with granules?

Granulocytes (C) Signup and view all the answers

What determines an individual's blood group?

The presence of antigens on the surface of erythrocytes (C) Signup and view all the answers

What happens if a pregnant woman is Rh- and her baby is Rh+?

The mother will produce antibodies against the baby's blood (B) Signup and view all the answers

What is the term for the destruction of a fetus's red blood cells due to maternal antibodies?

Erythroblastosis foetalis (A) Signup and view all the answers

What is the function of fibrin in blood coagulation?

Forming a network of threads to trap blood (A) Signup and view all the answers

What is the term for the membranes surrounding the heart?

Pericardium (B) Signup and view all the answers

What is the role of calcium ions in blood coagulation?

Helping in clotting (A) Signup and view all the answers

What is the purpose of anti-Rh antibodies given to a mother?

To prevent erythroblastosis foetalis (A) Signup and view all the answers

What is the function of lymph?

To collect interstitial fluid (C) Signup and view all the answers

What is the function of the SAN in the heart?

To generate action potential, causing both atria to contract (C) Signup and view all the answers

What is the bundle of His?

A bundle of fibres that divides into the right and left bundles (A) Signup and view all the answers

During which phase of the heartbeat do all chambers of the heart rest?

Joint diastole (A) Signup and view all the answers

What happens to the tricuspid and bicuspid valves during joint diastole?

They open (A) Signup and view all the answers

What happens to the blood in the lungs?

It becomes oxygenated (D) Signup and view all the answers

What happens to the blood after it leaves the left ventricle?

It goes to the aorta (B) Signup and view all the answers