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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

Correct Answer :

D. insects


Related Questions

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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

RBCs placed in a hypertonic solution

A. retain their size

B. shrink

C. burst

D. die

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4

Pacemaker of the heart is

A. S.A. node

B. A.V. node

C. A.V. septum

D. LA. Septum

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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

The larger lymphatic organ in the body is

A. lymph node

B. liver

C. pancreas

D. spleen

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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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The white pus of an infected part in the body is composed of

A. dead erythrocytes and plasma

B. dead leucocytes and blood serum

C. living leucocytes and serum

D. living erythrocytes and serum

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4

The sympathetic nerve causes the heart rate to

A. increase

B. decrease

C. show no change

D. stroke volume increases

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4

The nerve like modified muscle in the right auricle is called

A. atrioventricular node

B. pacemaker

C. bulbus artriosus

D. none of these

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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

If clumping occurs in a given sample of blood with 'both A and B serum, the blood group was

A. A

B. AB

C. B

D. O

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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 life of erythrocytes in mammalian blood is about

A. 120 days

B. 150 days

C. 190 days

D. 180 days

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The largest blood corpuscle is

A. monocyte

B. thrombocyte

C. erythrocyte

D. lymphocyte

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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

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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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 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 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

The antibodies are formed in

A. bone marrow

B. spleen

C. lymphoid tissue

D. liver

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The blood platelets are the source of

A. hemoglobin

B. fibrinogen

C. thromboplastin

D. microelements

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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

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

Rh factor is named after

A. monkey

B. chimpanzee

C. man

D. none of these

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4

A person with blood group 'C required blood transfusion. Blood of which group can be given to him?

A. A only

B. AB only

C. Bonly

D. Oonly

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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

An excess of tissue fluid in the extracellular space is called

A. atherosclerosis

B. ischemia

C. oedema

D. asthma

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Mammalian erythrocytes in blood are

A. mononudeated

B. anucleated

C. dinucleated

D. multinucleated