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प्रश्न
What are the components of the transport system in human beings? What are the functions of these components?
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उत्तर १
The main components of the transport system in human beings are the heart, blood, and blood vessels.
- The heart pumps oxygenated blood throughout the body. It receives deoxygenated blood from the various body parts and sends this impure blood to the lungs for oxygenation.
- Blood helps in the transport of oxygen, nutrients, CO2, and nitrogenous wastes.
- The blood vessels (arteries, veins, and capillaries) carry blood either away from the heart to various organs or from various organs back to the heart.
उत्तर २
The components of the human the transport system is blood-vascular system and lymphatic system.
- Blood vascular system: It consists of the heart, blood vessels and blood.
- Heart: It is a muscular pumping organ which keeps the circulating medium (blood) in a state of continuous movement.
- Blood vessels: These are channels through which blood flows. Blood vessels are of three types.
- Arteries: They carry oxygenated blood from the heart to different parts of the body.
- Veins: They transport deoxygenated blood from different parts of the body back to the heart.
- Capillaries: They help in the exchange of material between blood and living cells through tissue fluid.
- Blood: It consists of plasma and corpuscles (RBCs, WBCs and platelets)
- Plasma: It is the liquid part of the blood which helps in the transport of hormones, nutrients, excretory matter, etc.
- RBCs: They help transport respiratory gases - O2 and CO2.
- WBCs: They act as soldiers of the body and provide immunity.
- Platelets: Help in blood clotting.
- Lymphatic system: This is a network of thin-walled vessels that consists of lymph, lymphatic vessels, and lymph nodes.
- Lymph: Helps in the transport of respiratory gases, fatty acids, glycerol, vitamins, etc. inside body.
- Lymphatic vessels: Collect lymph and transport it to the veins.
- Lymph node: Helps in the formation of lymphocytes.
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संबंधित प्रश्न
Which vein brings clean blood from the lungs into the heart?
Draw a sectional view of the human heart and label on it Aorta, Pulmonary arteries, Vena cava, Left ventricle.
Name the following:
The valve of right auriculo-ventricular aperture.
Select the odd one in the following:
Tricuspid, Bicuspid, Semilunar, Foramen ovales.
Choose the correct answer:
Which chamber of the heart has the thickest wall?
Given alongside is a highly diagrammatic sketch of the internal structure of the human heart:
(i) Name the parts numbered 1-11.
(ii) What is the main difference in the quality of blood contained in parts 6 and 7?
The figure below represents the internal structure of a mammalian heart and the associated blood vessels.
(i) (a) Name each of the structures labeled 1, 2, 3, 4, 5, 6, 7 and 8.
(b) State the function of each of the structures 5, 6, 7, and 8.
(ii) (a) State the function of the heart as an entire organ.
(b) Why are the walls of the left ventricle more muscular than the right?
Complete the following sentence with appropriate word:
The heart is made up of special muscles, the _______ muscles.
State the Location: Semilunar valves of the heart
State the Function: Tricuspid valve
What is the importance of valves in the heart?
How do the pulmonary artery and pulmonary vein differ in their function when compared to a normal artery and vein?
Complete the analogy.
The contraction of heart muscles: Systole:: Relaxation of heart muscles: ______.
Blood capillaries show the presence of ______
______ is the opening of the upper chamber of the heart into the lower chamber.
Identify the CORRECT route through which impulse travels in the heart.
The inner surface of the ventricle is thrown into series of irregular muscular ridges called ______
Where is Bicuspid valve located? What is its function?
Fill in the blanks of the following paragraph using just two words – arteries and veins.
___(a)___ carry oxygen-rich blood from the heart to all parts of the body and ___(b)___ carry carbon dioxide-rich blood from all parts of the body back to the heart. ___(c)___ have thin walls and ___(d)___ have thick elastic walls. Blood flows at high pressure in ___(e)___. Valves are present in ___(f)___ which allow blood to flow only towards the heart. ___(g)___ divide into smaller vessels. These vessels further divide into extremely thin tubes called capillaries. The capillaries join up to form ___(h)___.
