Body Fluids and Circulation

The WBC count of a person's blood sample is \(8000/\mathrm{cu}.\mathrm{mm}\). How many eosinophils and lymphocytes would be in the same blood sample approximately?

[NEET 2026]

The mother has \({\mathrm{A}}^{+}\) blood group, the father has \({\mathrm{B}}^{+}\) and the child is \({\mathrm{A}}^{+}\). What can be the possible genotypes of all three, respectively?
\(A.{I}^{A}{I}^{A}\left|{I}^{B}i\right|{I}^{B}i\)

B. \({\mathrm{I}}^{\mathrm{A}}{\mathrm{I}}^{\mathrm{A}}|{\mathrm{I}}^{\mathrm{B}}\mathrm{i}|{\mathrm{I}}^{\mathrm{A}}\mathrm{i}\)
C. \({\mathrm{I}}^{\mathrm{B}}\mathrm{i}|{\mathrm{I}}^{\mathrm{A}}{\mathrm{I}}^{\mathrm{A}}|{\mathrm{I}}^{\mathrm{A}}{\mathrm{I}}^{\mathrm{B}}\)
D. \({I}^{\mathrm{A}}{I}^{\mathrm{A}}∣{I}^{\mathrm{B}}{I}^{\mathrm{B}}∣{I}^{A}i\)
E. \({I}^{A}i{I}^{B}i{I}^{A}i\)

Choose the correct answer from the options given below:

[Re-NEET 2024]

Following are the stages of pathway for conduction of an action potential through the heart:
A. AV bundle
B. Purkinje fibres
C. AV node
D. Bundle branches
E. SA node

Choose the correct sequence of pathway from the options given below :

[NEET 2024]

Select the incorrect statements with reference to Rh grouping.
A. Erythroblastosis foetalis is a condition observed having foetus with \({\mathrm{Rh}}^{-\mathrm{ve}}\) blood and mother with \({\mathrm{Rh}}^{+\mathrm{ve}}\) blood.
B. Rh antigen is observed on RBC's in the majority of human beings.
C. Before blood transfusion, Rh group should also be matched.
D. Rh incompatibility is observed when a pregnant mother is \({\mathrm{Rh}}^{-\mathrm{ve}}\) and the foetus is \({\mathrm{Rh}}^{+\mathrm{ve}}\).
E. Erythroblastosis foetalis can be avoided by administering anti-Rh antibodies to the mother immediately after the delivery of the second child.
Choose the answer from the options given below :

[NEET 2026]

The mother has \({\mathrm{A}}^{+}\) blood group, the father has \({\mathrm{B}}^{+}\) and the child is \({\mathrm{A}}^{+}\). What can be the possible genotypes of all three, respectively?
\(A.{I}^{A}{I}^{A}\left|{I}^{B}i\right|{I}^{B}i\)

B. \({\mathrm{I}}^{\mathrm{A}}{\mathrm{I}}^{\mathrm{A}}|{\mathrm{I}}^{\mathrm{B}}\mathrm{i}|{\mathrm{I}}^{\mathrm{A}}\mathrm{i}\)
C. \({\mathrm{I}}^{\mathrm{B}}\mathrm{i}|{\mathrm{I}}^{\mathrm{A}}{\mathrm{I}}^{\mathrm{A}}|{\mathrm{I}}^{\mathrm{A}}{\mathrm{I}}^{\mathrm{B}}\)
D. \({I}^{\mathrm{A}}{I}^{\mathrm{A}}∣{I}^{\mathrm{B}}{I}^{\mathrm{B}}∣{I}^{A}i\)
E. \({I}^{A}i{I}^{B}i{I}^{A}i\)

Choose the correct answer from the options given below:

[Re-NEET 2024]

A person with blood group \({\mathrm{ARh}}^{-}\) can receive the blood transfusion from which of the following types?
A. \(BR{h}^{-}\)
B. \({\mathrm{ABRh}}^{-}\)
C. \({\mathrm{ORh}}^{-}\)
D. \({\mathrm{ARh}}^{-}\)
E. \({\mathrm{ARh}}^{+}\)

Choose the correct answer from the options given below:

[Re-NEET 2024]

'Lub' sound of Heart is caused by the ______

[Re-NEET 2024]

Following are the stages of pathway for conduction of an action potential through the heart:
A. AV bundle
B. Purkinje fibres
C. AV node
D. Bundle branches
E. SA node

Choose the correct sequence of pathway from the options given below :

[NEET 2024]

The number of action potentials generated by sino-atrial node (SAN) in a healthy human is ________ per minute.

[Re-NEET 2026]

A person with blood group \({\mathrm{ARh}}^{-}\) can receive the blood transfusion from which of the following types?
A. \(BR{h}^{-}\)
B. \({\mathrm{ABRh}}^{-}\)
C. \({\mathrm{ORh}}^{-}\)
D. \({\mathrm{ARh}}^{-}\)
E. \({\mathrm{ARh}}^{+}\)

Choose the correct answer from the options given below:

[Re-NEET 2024]

'Lub' sound of Heart is caused by the ______

[Re-NEET 2024]

'Lub' sound of Heart is caused by the ______

[Re-NEET 2024]

Cardiac activities of the heart are regulated by:
A. Nodal tissue
B. A special neural centre in the medulla oblongata
C. Adrenal medullary hormones
D. Adrenal cortical hormones
Choose the correct answer given below:

[NEET 2025]

Which of the following statements is incorrect ?

[Re-NEET 2026]

A person with blood group \({\mathrm{ARh}}^{-}\) can receive the blood transfusion from which of the following types?
A. \(BR{h}^{-}\)
B. \({\mathrm{ABRh}}^{-}\)
C. \({\mathrm{ORh}}^{-}\)
D. \({\mathrm{ARh}}^{-}\)
E. \({\mathrm{ARh}}^{+}\)

Choose the correct answer from the options given below:

[Re-NEET 2024]

The mother has \({\mathrm{A}}^{+}\) blood group, the father has \({\mathrm{B}}^{+}\) and the child is \({\mathrm{A}}^{+}\). What can be the possible genotypes of all three, respectively?
A. \({\mathrm{I}}^{\mathrm{A}}{\mathrm{I}}^{\mathrm{A}}{\mathrm{I}}^{\mathrm{B}}\mathrm{i}{\mathrm{I}}^{\mathrm{B}}\mathrm{i}\)

B. \({\mathrm{I}}^{\mathrm{A}}{\mathrm{I}}^{\mathrm{A}}{\mathrm{I}}^{\mathrm{B}}\mathrm{i}{\mathrm{I}}^{\mathrm{A}}\mathrm{i}\)

C. \({\mathrm{I}}^{\mathrm{B}}\mathrm{i}{\mathrm{I}}^{\mathrm{A}}{\mathrm{I}}^{\mathrm{A}}{\mathrm{I}}^{\mathrm{A}}{\mathrm{I}}^{\mathrm{B}}\)

D. \({\mathrm{I}}^{\mathrm{A}}{\mathrm{I}}^{\mathrm{A}}{\mathrm{I}}^{\mathrm{B}}{\mathrm{I}}^{\mathrm{B}}{\mathrm{I}}^{\mathrm{A}}\mathrm{i}\)

E. \({\mathrm{I}}^{\mathrm{A}}\mathrm{i}{\mathrm{I}}^{\mathrm{B}}\mathrm{i}{\mathrm{I}}^{\mathrm{A}}\mathrm{i}\)

Choose the correct answer from the options given below:

[Re-NEET 2024]

The opening between the right atrium and the right ventricle is guarded by ___________.

[Re-NEET 2026]

Match List I with List II :

Choose the correct answer from the options given below:

[NEET 2024]

Which of the following conditions cause erythroblastosis foetalis?

Which of the following statements are correct?
A.Basophils are most abundant cell of the total WBCs
B. Basophils secrete histamine, serotonin and heparin
C. Basophils are involved in inflammatory response
D.Basophils have kidney shaped nucleus
E. Basophils are agranulocyte
Choose the correct answer from the options given below:

Which of the following is associated with decrease in cardiac output?

Serum differs from blood in

Which enzyme is responsible for the conversion of inactive fibrinogens to fibrins?

Which enzyme is responsible for the conversion of inactive fibrinogens to fibrins?

[NEET 2021]

Persons with 'AB' blood group are called as "universal recipients". This is due to:

[NEET 2021]

Match the following columns and select the correct option

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[NEET 2020]

Which of the following conditions cause erythroblastosis foetalis?

[Re-NEET 2020]

Name the blood cells, whose reduction in number can cause clotting disorder, leading to excessive loss of blood from the body.

Persons with ‘AB’ blood group are called as “Universal recipients”. This is due to:

Which of the following statements are correct?
A. Basophils are most aboundant cell of the total WBCS.
B. Basophils secrete histamine, serotonin, and heparin.
C. Basophils are involved in inflammatory response.
D. Basophils have kidney shaped nucleus.
E. Basophils are agranulocyte.

Choose the correct answer from the options given below.

Which of the following statements are correct?
A. Basophils are most abundant cells of the total WBCs
B. Basophils secrete histamine, serotonin and heparin
C. Basophils are involved in inflammatory response
D. Basophils have kidney shaped nucleus
E. Basophils are agranulocytes

Choose the correct answer from the options given below:

[NEET 2023]

Which of the following statements are correct?
A. Basophils are most abundant cells of the total WBCs
B. Basophils secrete histamine, serotonin and heparin
C. Basophils are involved in inflammatory response
D. Basophils have kidney shaped nucleus
E. Basophils are agranulocytes

Choose the correct answer from the options given below:

Which of the following is associated with decrease in cardiac output?

[Re-NEET 2020]

Match List I with List II.

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Choose the correct answer from the options given below :

[NEET 2023]

Persons with 'AB' blood group are called as "Universal recipients". This is due to:

Which of the following statements are correct?
A. Basophils are most abundant cells of the total WBCs
B. Basophils secrete histamine, serotonin and heparin
C. Basophils are involved in inflammatory response
D. Basophils have kidney shaped nucleus
E. Basophils are agranulocytes

Choose the correct answer from the options given below:

What is correct for blood group O?

QRS complex in a standard ECG represents;

Given below are two statements:

Statement-I: The coagulum is formed of network of threads called thrombins

Statement-II: Spleen is the graveyard of erythrocytes

In the light of the above statements, choose the most appropriate answer from the options given below.

[NEET 2022]

Which of the following is correct w.r.t the location of atrio-ventricular node in the human heart?