Question

How do parasympathetic neural signals affect the working of the heart?

A. Reduce both heart rate and cardiac output  
B. Heart rate is increased without affecting the cardiac output
C. Both heart rate and cardiac output increase
D. Heart rate decreases but cardiac output increases
Answer :   Reduce both heart rate and cardiac output

Releted MCQ Question on
Zoology >> Body Fluids and Circulation

Releted Question 1

Adult human RBCs are enucleated. Which of the following statement(s) is/are most appropriate explanation for this feature?
(1) They do not need to reproduce
(2) They are somatic cells
(3) They do not metabolize
(4) All their internal space is available for oxygen transport

A. only (1)
B. (1), (3) and (4)
C. (2) and (3)
D. only (4)
Releted Question 2

Reduction in pH of blood will

A. reduce the rate of heart beat
B. reduce the blood supply to the brain
C. decrease the affinity of haemoglobin with oxygen
D. release bicarbonate ions by the liver
Releted Question 3

Which one of the following is correct ?

A. Serum = Blood + Fibrinogen
B. Lymph = Plasma + RBC + WBC
C. Blood = Plasma + RBC + WBC
D. Plasma = Blood - Lymphocytes
Releted Question 4

Erythropoiesis starts in :

A. Liver
B. Spleen
C. Red bone marrow
D. Kidney

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Body Fluids and Circulation


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