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Blood pressure in the mammalian aorta is maximum during

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Important Questions on Respiration and Circulation

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Biology>Human Physiology>Respiration and Circulation>Blood Vessels

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>Respiration and Circulation>Blood Vessels
Blood pressure in the mammalian aorta is maximum during
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Biology>Human Physiology>Respiration and Circulation>Blood Vessels

Given below are sets of five terms each. Rewrite the terms in correct order in a logical sequence beginning with the first word that is underlined:

Artery, Capillaries, Venule, Vein, Arteriole.

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Biology>Human Physiology>Respiration and Circulation>Blood Vessels
In mammals, which blood vessel would normally carry the largest amount of urea?
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A regular check on the unborn baby of a lady towards the end of her pregnancy showed a heart rate of 80 beats per minute. What would the doctor infer about the baby's heart condition from this?
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Biology>Human Physiology>Respiration and Circulation>Blood Vessels
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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Biology>Human Physiology>Respiration and Circulation>Blood Vessels

Which one of the following graphs best describes the Blood Pressure (BP) change when blood moves from aorta to capillaries?

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Biology>Human Physiology>Respiration and Circulation>Blood Vessels
Correct course of blood circulation in human heart.
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Biology>Human Physiology>Respiration and Circulation>Blood Vessels
Write the name of device used to measure the blood-pressure.
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Biology>Human Physiology>Respiration and Circulation>Blood Vessels

What is blood pressure? What is the approximate value of normal systolic pressure and diastolic pressure?

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Biology>Human Physiology>Respiration and Circulation>Blood Vessels
Which one of the following animals has two separate circulatory pathways?
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Biology>Human Physiology>Respiration and Circulation>Blood Vessels
Calculate the cardiac output on an individual having 70 heartbeats/min with a stroke volume of 55 mL.
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Biology>Human Physiology>Respiration and Circulation>Blood Vessels
The pulmonary artery carries
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Biology>Human Physiology>Respiration and Circulation>Blood Vessels
Purkinje fibres are located in the following structure/s
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Biology>Human Physiology>Respiration and Circulation>Blood Vessels
The hepatic portal vein drains blood to the liver from
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Biology>Human Physiology>Respiration and Circulation>Blood Vessels
Blood pressure in the pulmonary artery is:
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Biology>Human Physiology>Respiration and Circulation>Blood Vessels
In humans, during one cardiac cycle, diastole takes place for how many seconds in the ventricle?
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Biology>Human Physiology>Respiration and Circulation>Blood Vessels
What would be the heart rate of a person if the cardiac output is 5 L, blood volume in the ventricles at the end of diastole is 100 mL and at the end of ventricular systole is 50 mL?  
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Biology>Human Physiology>Respiration and Circulation>Blood Vessels
What is blood pressure? 
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Biology>Human Physiology>Respiration and Circulation>Blood Vessels
The extra heart sound murmur or hiss is heard when