-
Open Circulatory System – Blood flows freely through open spaces or sinuses, rather than being confined to vessels. Example: Arthropods (insects) and mollusks.
-
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).
Advertisements
Advertisements
प्रश्न
Name these:
Two kinds of circulatory systems in different animals.
Advertisements
उत्तर
The two kinds of circulatory systems in different animals are:
संबंधित प्रश्न
Agranulocytes are :
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
Explain the difference.
Arteries and veins.
What is meant by the term 'double circulation' of blood in mammals? What is diastole?
Define the Arteries.
In what ways does the blood entering the kidney differ from that leaving the kidney?
Choose the correct alternative.
What is the minimum number of the plasma membrane that oxygen has to diffuse across to pass from air in the alveolus to haemoglobin inside a RBC?
Thin tube-like structures which are the component of circulatory system are called blood vessels.
Serum differs from blood in lacking ____________.
The valve which prevents back flow of blood in the veins and lymph vessels is ______.
