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What is the correct answer?

4

The diameter of capillaries for the RBCs to pass is

A. 4 fim

B. less than 5 fim

C. more than 5 Jim

D. more than 10 Jim

Correct Answer :

B. less than 5 fim


Related Questions

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4

Blood passes from the arterioles to venules via

A. lacteals

B. valved veins

C. capillaries

D. any of these

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4

William Harvey is known for the discovery of

A. muscle contraction

B. nerve conduction

C. renal excretion

D. blood circulation

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4

The antibodies are formed in

A. bone marrow

B. spleen

C. lymphoid tissue

D. liver

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4

Clotting of blood oozing out of a wound, involves

A. drying as a result of evaporation of the plasma

B. denaturation of the blood albumins by thrombin

C. conversion of fibrinogen to fibrin by thrombin

D. haemolysis of erythrocytes

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4

The life of erythrocytes in mammalian blood is about

A. 120 days

B. 150 days

C. 190 days

D. 180 days

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4

Blood has no role in the transport of O^2 in

A. earthworm

B. leech

C. lung fishes

D. insects

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4

Urea is transported by

A. WBC

B. RBC

C. haemoglobin

D. blood and plasma

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4

Pulmonary artery carries blood from

A. heart to lungs

B. lungs to heart

C. lungs to right auricle

D. lungs to left auricle

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4

The diameter of capillaries for the RBCs to pass is

A. 4 fim

B. less than 5 fim

C. more than 5 Jim

D. more than 10 Jim

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4

Mammalian erythrocytes in blood are

A. mononudeated

B. anucleated

C. dinucleated

D. multinucleated

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4

Diapedesis is

A. movement of erythrocytes to injury site

B. migration of cells through the walls of blood capillaries into the tissue spaces

C. contraction of muscles

D. none of these

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4

Impulses from the pacemaker initiate

A. the ventricles to contract

B. the auricles to contract

C. both (a) and (b)

D. the relaxation of heart

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4

The vertebrate heart is classified as

A. myogenic

B. neurogenic

C. amyogenic

D. both (a) and YW

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4

The pH of blood in arteries and veins is

A. same

B. more .in arteries and less in veins

C. not definite

D. less in arteries and more in veins

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4

The left atrioventricular aperture in man is guarded by

A. tricuspid valve

B. simple valve

C. bicuspid or mitral value

D. sphincter value

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4

Carotid artery carries

A. oxygenated blood to the heart

B. deoxygenated blood to the lungs

C. oxygenated blood to the brain

D. deoxygenated blood to the stomach

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4

The least concentration of urea in mammals is carried in blood of

A. hepatic vein

B. renal vein

C. renal artery

D. hepatic artery

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4

Corneal grafts are generally not rejected by the recipient because cornea is

A. non living

B. non proteineceous

C. non cellular

D. non vascularised

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4

The vein which carries oxygenated blood is

A. pulmonary

B. renal

C. coronary

D. azygous

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4

The erythrocytes of mammals are non nucleated except in

A. rabbit

B. monkey

C. man

D. camel

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4

Emotions such as worry, anxiety, fear can elevate a person's blood pressure by

A. a rise in the systolic pressure

B. a rise in the diastolic pressure

C. a decrease in the systolic pressure

D. a decrease in the diastolic pressure

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4

A condition characterised by an increase in the number of erythrocytes in the circulation is

A. leukemia

B. polycythemia

C. anemia

D. polydipsia

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4

The instrument used to measure the blood pressure is

A. sphygmomanometer

B. respirometer

C. thermometer

D. stethoscope

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4

Universal recipient is the person with the blood group

A. A

B. B

C. AB

D. O

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4

The larger lymphatic organ in the body is

A. lymph node

B. liver

C. pancreas

D. spleen

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4

RBCs placed in a hypertonic solution

A. retain their size

B. shrink

C. burst

D. die

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4

Universal donor is the person with the blood group

A. A

B. AB

C. B

D. O

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4

Rh factor is named after

A. monkey

B. chimpanzee

C. man

D. none of these

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4

The process of blood cells formation is called

A. haemocytopoiesis

B. hematopoiesis

C. both (a) and (b)

D. none of these

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4

The blood pigment of cephalopods such as Septa and Octopus is

A. haemoglobin

B. haemerythrin

C. haemocyanin

D. chlorocruorin