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Open Circulatory System – Blood flows freely through open spaces or sinuses, rather than being confined to vessels. Example: Arthropods (insects) and mollusks.
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Closed Circulatory System – Blood remains within a network of vessels (arteries, veins, and capillaries) throughout the body. Example: Vertebrates (humans, fish, amphibians) and annelids (earthworms).
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प्रश्न
Name these:
Two kinds of circulatory systems in different animals.
अति संक्षिप्त उत्तर
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उत्तर
The two kinds of circulatory systems in different animals are:
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अध्याय 8: The Circulatory System - Review Questions [पृष्ठ ११२]
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संबंधित प्रश्न
Draw the structure of a human heart and label its parts.
Heart sounds are produced due to ______.
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closure of tricuspid and bicuspid valves
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rushing of blood through valves producing turbulence
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closure of atrioventricular and semilunar valves
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entry of blood into auricles
Note the relationship between the first two words and suggest the suitable word/ word for the
fourth place:
Lubb: Atrioventricualr valves :: dup: …………………
How do you account for the following difference?
The left ventricle has thicker walls than the right ventricle.
Match the items given in Column A with the most appropriate ones in Column B and REWRITE the correct matching pairs :
Column A Column B
(i) Cranial nerves Testosterone
(ii) Leydig cells Natural reflex
(iii) Acetylcholine 12 pairs
(iv) Spinal nerves Prolactin
(v) Sneezing Neurotransmitter
- 18 pairs
- 31 pairs
- Conditioned reflex
Name the systems that carry out the different functions of the body.
Analogy
Lungs: Respiratory system:: _______: Circulatory system.
Identify the normal haemoglobin count in human females.
In a closed circulatory system, blood is completely enclosed within:
Name the following :-
The cell organelle where photosynthesis occurs
