Advertisements
Advertisements
प्रश्न
Explain the following:
Why is the closed circulatory system more efficient than the open system?
Advertisements
उत्तर
The closed circulatory system is more efficient than the open system because in closed system the blood flows inside arteries or veins all the time which stops the mixing of blood with other bodily fluids and helps the transport of the blood around the body.
APPEARS IN
संबंधित प्रश्न
The diagram given below represents a section of the human heart. Answer the questions that follow :
(i) Which parts of heart are in the diastolic phase? Give a reason to support your answer.
(ii) Label the parts numbered 1 and 2 in the diagram. What type of blood flows through them?
(iii) What causes the heart sounds ‘LUBB’ and ‘DUP’?
(iv) Name the blood vessels that supply oxygenated blood to the heart muscles.
(v) Draw neat labelled diagrams of a cross section of an artery and a vein.
Differentiate between LUBB and DUP (names of the valves whose closure produce the sound)
What are the average values of blood pressure in a normal adult human?
Name the following:
The phase of the cardiac cycle in which the auricles contract.
Production of RBCs occurs in ______.
What is the Rh-factor?
Differentiate between:
Open circulatory system and Closed circulatory system.
Name the Following
Oxygen is transported by the blood in the form of
The endocrine glands produce chemical substances called ____
All the waste products of the body are excreted through the circulatory system.
