Question

D. Answer the following questions:
1. Which is the largest bone in the human body?
2. How many bones and muscles are there in a normal human body?
3. Name the organs of the digestive system?
4. Explain the process of inhalation?
5.Write a brief description of the heart?
6. Why is brain called the master organ of the body?
7. Explain the working of brain? पता हो ​

Answer 1

Answer:

1) femur

2) We exercise at least 36 muscles when we smile. When you were born, you had 300 bones. Now you have 206, if you are an adult. The rest of the bones have not disappeared – they have merely fused together.

3)The hollow organs that make up the GI tract are the mouth, esophagus, stomach, small intestine, large intestine, and anus. The liver, pancreas, and gallbladder are the solid organs of the digestive system.

4)When you breathe in, or inhale, your diaphragm contracts and moves downward. This increases the space in your chest cavity, and your lungs expand into it. ... They contract to pull your rib cage both upward and outward when you inhale. As your lungs expand, air is sucked in through your nose or mouth.

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