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The heart of a crocodile consists of

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Important Questions on Body Fluids and Circulation

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Biology>Human Physiology>Body Fluids and Circulation>Human Circulatory System
How many chambers are there in frog’s heart
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Biology>Human Physiology>Body Fluids and Circulation>Human Circulatory System
Blood pressure in the mammalian aorta is maximum during
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Biology>Human Physiology>Body Fluids and Circulation>Human Circulatory System
In which animal open blood vascular system is found?
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Biology>Human Physiology>Body Fluids and Circulation>Human Circulatory System
Draw a labelled diagram of the internal structure of the human heart.
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Biology>Human Physiology>Body Fluids and Circulation>Human Circulatory System
Blood pressure in the pulmonary artery is:
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Biology>Human Physiology>Body Fluids and Circulation>Human Circulatory System
Purkinje fibres are located in the following structure/s
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Biology>Human Physiology>Body Fluids and Circulation>Human Circulatory System
Difference between systolic and diastolic blood pressure is known as –
 
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Biology>Human Physiology>Body Fluids and Circulation>Human Circulatory System
Explain the internal structure of human heart. (diagram not necessary)
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Biology>Human Physiology>Body Fluids and Circulation>Human Circulatory System
Assertion (A): Heart of fishes is called branchial heart.
Reason (R): It receives deoxygenated blood from body parts.
The correct option among the following is
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Biology>Human Physiology>Body Fluids and Circulation>Human Circulatory System
Match the items given in Column I with those in Column II and select the correct option given below:
 
  Column – I   Column – II
a. Tricuspid valve i. Between left atrium and left ventricle.
b. Bicuspid valve ii. Between the right ventricle and pulmonary artery.
c. Semilunar valve iii. Between the right atrium and right ventricle.
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Statement (S): The sinoatrial node is called 'Pace-maker'.

Reason (R): The sinoatrial node contains specialised cardiomyocytes and generates action potentials without any external stimuli.

The correct answer is

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Biology>Human Physiology>Body Fluids and Circulation>Human Circulatory System
Pacemaker is 
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Biology>Human Physiology>Body Fluids and Circulation>Human Circulatory System
Read the following (A-D) statements :-

A. The tricuspid and bicuspid valves are opened during joint diastole.

B. Atrial systole decrease the flow of blood into the ventricles by about 30 percent.

C. Ventricular systole increases the ventricular pressure.

D. Ventricular pressure falls causing the closure of semilunar valves.

How many of the above statements are correct:-
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Biology>Human Physiology>Body Fluids and Circulation>Human Circulatory System
Foramen ovale
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The blood flow through the human heart is visualised by
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Biology>Human Physiology>Body Fluids and Circulation>Human Circulatory System
The main difference in the structure of arteries and veins is in:
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Which blood vessels carry blood from different parts of your body to the heart?
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How many values are correctly given from following?

i. Normal heartbeat rate = 72 beats/min.
ii. Period of cardiac cycle = 0.8 sec.
iii. Stroke volume = 70 ml
iv. Normal cardiac output = 5000 ml
v. Normal blood pressure = 120/80 mm Hg
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Papillary muscles are found in which of the following?
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Which of the following statements is true?