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प्रश्न
The blood vessel without a mascular layer in its wall ______.
विकल्प
Capillary
Vein
Artery
Portal vein
उत्तर
The blood vessel without a mascular layer in its wall capillary
Explanation:
Capillaries are thin tubes without muscles that allow chemicals to diffuse into and out of the tissues.
संबंधित प्रश्न
Why does the heart need valves?
Differentiate between the following pair of terms:
Vena cava and aorta.
Describe the functions of Platelets.
Define the term Veins.
Describe the structural differences between an artery and a vein.
The diagram below represents a certain category of blood vessels showing the role of a special structure in their walls :
(i) Name the kind of blood vessels shown.
(ii) What is the structure shown inside the blood vessels?
(iii) What is the role of these structures?
(iv) Are these structures present in any other kind of blood vessel? If so, name it.
(v) Towards which side of the figure (Top or Bottom) is the heart located?
Complete the following sentence with appropriate word:
The blood vessel which transports blood from heart to an organ is called _________.
Identify the CORRECT statement regarding pulse.
Assertion: Veins have thin walls to collect blood from different organs.
Reason: Blood in veins are not under pressure.
Differentiate between an artery and a vein.
