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प्रश्न
Differentiate between:
Open circulatory system and Closed circulatory system.
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उत्तर
| Open circulatory system | Closed circulatory system |
| Blood may flow in vessels but also remains in direct contact with tissues. | Blood flows in definite vessels known as arteries and veins. |
| Blood spaces or sinuses are present. | Blood spaces or sinuses are absent |
| Haemocoel is present. | Haemocoel is absent. |
| Found in insects, e.g., cockroach, housefly, etc. | Found in annelids and higher vertebrates. |
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संबंधित प्रश्न
What is the liquid part of the blood called? What is the function of platelets in the blood?
Name the following:
The smallest common blood vessels formed by the union of capillaries.
What is the function of tonsils?
Given diagram shows a simple diagram of the circulation of blood in a mamma showing the
main blood vessels, the heart, lungs and body tissues. The blood vessel, labelled 6, contains
deoxygenated blood and the valve leading to it has three semi-lunar pockets.
(a) Name the blood vessels and organs marked by numbers 1 to 8.
(b) What is meant by the term ‘double circulation’ of blood in mammals?
(c) what is diastole?
[There is an “error” in the diagram. According to the usual practice the pulmonary (lung)
circulation is shown upward and the systemic downward, but here it is reversed].
During surgical operations or during accidents, the patient may be given blood from outside to save his life. What is the technical name of this process? Briefly explain the precautions to be taken in this process.
True or false:
Impure blood is received by the right auricle.
Differentiate between:
Arteries and Veins.
Complete the following sentence with appropriate word:
The chamber of heart which pumps blood into aorta is __________.
Use your brain power!
How is the air that we inhale purified in our body?
Which component of the haemoglobin molecule combines with the oxygen molecule to form oxyhaemoglobin?
