Free Blood Vessels MCQs with Answers
71 Blood Vessels MCQs from Biology, each with the correct answer and a written explanation of why it is correct. Free and unlimited, with no account needed.
Blood vessels include arteries, arterioles, capillaries, venules and veins, whose wall thickness, elasticity, lumen size and valves suit their roles in circulation. Questions compare pressure and blood flow in each vessel and distinguish pulmonary vessels, which carry blood to and from the lungs, from systemic vessels.
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- A. option A
- B. Option B
- C. Option C
- D. Option D
Explanation: The marked cells are neutrophils because they have multilobed nucleus. Neutrophils are white blood cells with a multi-lobed nucleusSo A is…
Correct answer: option A- A. Absence of blood capillaries
- B. Regulation of blood pressure
- C. Absence of respiratory pigments
- D. Flow of haemolymph in cavities
Explanation: In a closed circulatory system, blood circulates within a network of vessels, allowing for efficient regulation of blood pressure.
Correct answer: Regulation of blood pressure- A. Haemorrhage
- B. Atherosclerosis
- C. Arteriosclerosis
- D. Myocardial infarction
Explanation: The correct answer is haemorrhage. A haemorrhage is the medical term for the escape of blood from a ruptured blood vessel.
Correct answer: Haemorrhage- A. 24o
- B. 90o
- C. 144o
- D. 270o
Explanation: To determine the angle of the sector for blood group B, calculate it using the formula: (Number of students with blood group B / Total…
Correct answer: 144o- A. Aorta
- B. Veins
- C. Arteries
- D. Capillaries
Explanation: Blood pressure is the pressure exerted by the blood on the walls of the blood vessels.
Correct answer: Aorta- A. 10
- B. 20
- C. 25
- D. 55
- E. 75
Explanation: Albumins constitute around 75% of the plasma proteins. They are the smallest of the plasma proteins and play an important role in…
Correct answer: 75- A. Non-nucleated
- B. In deficiency, cancer is caused
- C. Manufactured in thymus
- D. Can squeeze through blood capillaries
Explanation: The correct answer is that WBCs can squeeze through blood capillaries. This is due to their amoeboid shape and the process known as…
Correct answer: Can squeeze through blood capillaries- A. Spleen
- B. Red bone marrow
- C. Kidney
- D. Liver
Explanation: Erythropoiesis is the formation of red blood cells (erythrocytes) which occurs in the red bone arrow.
Correct answer: Red bone marrow- A. Leukemia
- B. Edema
- C. Thalassemia
- D. Atherosclerosis
Explanation: "Leukaemia" is a type of cancer that results in the body making too many abnormal white blood cells.
Correct answer: Leukemia- A. Prothrombin
- B. Lipoprotein
- C. Albumin
- D. Iron
Explanation: Serum albumin accounts for 55% of blood proteins and is a major contributor to maintaining the osmotic pressure of the plasma to assist in…
Correct answer: Albumin- A. 100 days
- B. 110 days
- C. 120 days
- D. 130 days
Explanation: This is a standard answer. Lifespan of RBCs is approximately 120 days.This option c suggests that the life span of red blood cells (RBCs)…
Correct answer: 120 days- A. A+ve
- B. O-ve
- C. AB+ve
- D. O+ve
Explanation: O negative donors are often called 'universal donors' because anyone can receive the red blood cells from their donations.
Correct answer: O-ve- A. Liver
- B. Large intestine
- C. Stomach
- D. Gall bladder
Explanation: Explanation for this question will be added soon.
Correct answer: Large intestine- A. Eosinophils
- B. Neutrophils
- C. Monocytes
- D. Basophils
Explanation: Explanation:Heparin prevents blood clots and is released by Basophils. Hence, D is the correct option.
Correct answer: Basophils- A. Albumin
- B. Globulin
- C. Fibrinogen
- D. Prothrombin
Explanation: Option [A] The plasma proteins maintain colloidal osmotic pressure of blood.
Correct answer: Albumin- A. Lymphocytes
- B. Monocyte
- C. Eosinophils
- D. Basophils
Explanation: Option [A] Lymphocytes are the agranulocytes .They create antibodies to fight against bacteria, viruses, and other potentially harmful…
Correct answer: Monocyte- A. External pressure applied becomes greater than the systolic pressure
- B. External pressure applied is equal to systolic pressure
- C. External pressure applied is less than the systolic pressure
- D. External pressure applied is zero
Explanation: The correct answer is A. External pressure applied becomes greater than the systolic pressure.
Correct answer: External pressure applied becomes greater than the systolic pressure- A. Prothrombin
- B. Fibrinogen
- C. Immunoglobulin
- D. Globulin
- E. Both A and B
Explanation: Prothrombin is a protein made by the liver. Prothrombin helps blood to clot.
Correct answer: Both A and B- A. Aorta
- B. Arteries
- C. Veins
- D. Both options A and B
Explanation: The elastic fibres are essential in the recoil and the stretch of the blood vessel in order to survive high blood pressure.
Correct answer: Veins- A. Arteries
- B. Capillaries
- C. Veins
- D. Arterioles
Explanation: Valves in veins are one-way(semi lunar) flaps that help prevent blood from flowing backward in the circulatory system.
Correct answer: Veins