Question

the skeletal system 5 the class questions​

Answer 1

• 2@daadfddsstfnnnmmmwa

Answer 2

Explanation:

Question : 1 What is organ system?

Answer – A group of organs working together to perform a particular work for our body forms an organ system.

Question: 2. Write the name of any three organ system.

Answer: Skeletal system, Nervous System and Digestive System.

Question: 3. What is skeletal system? Write the name of different parts of the skeletal system.

Answer – Skeletal system is the framework of bones that gives support and shape to our body.

Different parts of skeletal system are Skull, rib cage, backbone, limbs, cartilage, muscles, and joints.

Question: 4. Write the function of skeletal system.

Answer: Functions of the skeletal system:

It gives support, shape and strength to the body.

It provides the points of attachment for different bones.

Question: 5. Write a short note on skull.

Answer – Skull is one of the most important parts of skeleton. Skull protests our brain. Skull consists of 28 bones in an adult human. All bones in the skull are fixed except lower jaw. The lower jaw is only movable part in skull. Lower jaw enables us in talking and eating. The upper and lower jaw has teeth which help in cutting and chewing food.

Question: 6. What is cartilage?

Answer: Cartilage is soft elastic substance that holds the bones. Cartilage makes the ends of the bones smooth which helps in the movements. Without cartilage, the bones would rub against each other and would create many difficulties. Some organs like nose, ears have cartilage.

Question: 7. How many parts are there in human brain. Write the function of each part.

Answer– There are three parts in human brain.

Cerebrum – Cerebrum helps in learning, memorizing, intelligence, and logic.

Cerebellum – Cerebellum helps in muscle coordination and in maintaining the balance of our body.

Medulla– Medulla is the lower part of the brain. Medulla is also called hind brain. Medulla controls heart beat, breathing, swallowing, and sneezing.

Question: 8. How many are there parts in ear?

Answer– There are three parts in human ear these are External ears, middle ears and inner ears.

Question: 9. What is external ear? Write the function of external ear.

External ear– The external part of the ear which is visible is called external ear. External ear is called pinna also. External ear may vary in shape and size in different animals. External ear directs the sound waves to the middle ears. All mammals have external ears.

Question: 10. What are joints?

Answer – Where two bone meet are called joints. Jonts enable bones in movement. Bone joints are connected to each other by strong fibrous tissue. Most joints are movable. There are four kinds of movable joints in our body.