Advertisements
Advertisements
प्रश्न
Why do people have a common belief that the heart is located on the left side of the chest?
Give reasons/explain:
People have a common belief that the heart is located on the left side of the chest.
Advertisements
उत्तर
People have a common belief that the heart is located on the left side of the chest because the narrow end of the roughly triangular heart is pointed to the left side. During its working, the heart's contraction is more powerful on the left side, which can be felt.
संबंधित प्रश्न
Given below is a diagram of a human blood smear.
Study the diagram and answer the questions that follow:
a) Name the components numbered ‘1’ to ‘4’
b) Mention two structural differences between the parts ‘1’ and ‘2’.
c) Name the soluble protein found in part ‘4’ which forms insoluble threads during clotting of blood.
d) What is the average lifespan of the component numbered ‘1’ ?
e) Component numbered ‘1’ do not have certain organelles but are very efficient in their function. Explain
Give reason for the following:
Only the veins and not the arteries are provided with valves.
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 structure and function of human blood.
Why does the left ventricle possess a thicker wall than the right ventricle?
Complete the following sentence with appropriate word:
The membranous covering of the heart is _______.
_____ gas is transported to all parts of the body.
The stomach is like a ______.
Which of the following health condition refers to the type of blood cancer in which uncontrolled increase in number of WBCs occurs?
Which of the following is the main site of erythropoiesis in adults?
