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प्रश्न
Given below is the simplified pathway of the circulatory system:
(i) Name the blood vessels marked 1 to 8.
(ii) Name the chamber of the heart which:
(a) Receives blood from ‘1’.
(b) Pumps blood into blood vessel ‘8’.
(iii) Mention two structural differences between blood vessels ‘7’ and ‘2’.
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उत्तर
(i)
1. Pulmonary vein
2. Dorsal aorta,
3. Hepatic portal vein
4. Renal artery
5. Iliac vein
6. Hepatic vein
7. Inferior vena-cava
8. Pulmonary artery.
(ii) (a) Left auricle.
(b) Right ventricle.
(iii) (a) The inferior vena cava arises from iliac veins coming from the hind limbs, while the dorsal aorta arises from the left ventricle and continues behind as the abdominal aorta.
(b) The deoxygenated blood is collected by the inferior vena cava, while the branches of the dorsal aorta supply oxygenated blood to the body parts.
संबंधित प्रश्न
Describe the function of the heart.
Explain Pulse
Blood in the pulmonary artery or pulmonary vein (Which one contains less oxyhaemoglobin?)
What is haemoglobin? State the consequences of deficiency of haemoglobin in our bodies.
Draw a neat and labelled diagram.
Internal structure of the heart.
Fill in the blanks with suitable words given below:
The two lower chambers of the heart are called ______.
Match the statements in Column A with those in Column B
| Column A | Column B | ||
| 1 | Heart | a | Movement of materials |
| 2 | Food and oxygen | b | Channels for transport in man |
| 3 | Carrier of oxygen | c | A living pump |
| 4 | Circulation | d | Materials needed by every living being |
| 5 | Arteries and veins | e | Red blood cells |
Name the Following
Oxygen is transported by the blood in the form of
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?
Label the diagram given below to show the four main parts of the urinary system and answer the following questions.
- Which organ removes extra salts and water from the blood?
- Where is the urine stored?
- What is the tube through which urine is excreted out of the body?
- What are the tubes that transfer urine from the kidneys to the urinary bladder called?
