2nd Class Science Human Body and their Needs Nerves

Nerves

Category : 2nd Class

*   Nerves

 

They transfer senses from the various places of the body to brain. In fact, these are the part of nervous system along with brain and spinal cord (a long, thin, tubular bundle of nervous tissues). Nervous system controls and regulates the activity of all the other systems of body.

 

Look at the following picture of nerves system of the human body:

 

 

common.jpg

 

     Nerves are the part of which one of the following system?

(a) Nervous system

(b) Reproductive system

(c) Respiratory system

(d) Excretory system

 

Answer: (a)

Explanation

Nerves are the part of Nervous system .Therefore, option (A) is correct and rest of the options is incorrect.

 

 

      Which one of the following is true?

(a) Leg is the part of nervous system

(b) Hand is the part of nervous system

(c) Brain is the part of nervous system  

(d) Hair is the part of nervous system

 

Answer: (c)

Explanation 

Brain is the part of nervous system. Therefore, option (C) is correct and rest of the options is incorrect.

 

 

you know.jpg  

The acid in your stomach is strong enough to dissolve razor blades.

Enamel in your teeth is the hardest substance in your body.

Smallest bone in the human body is in ear.

The average life of a taste bud is 10 days.

 

 

summary.jpg  

Brain which is located inside the head part is the thinking part ^and central organ of the nervous system.

Human has one nose to take breath and smell.

Eyes, nose and ears are head part and external part of the body and they are sense organs.

Skin is a sense organ and covers all part of the body.

Bones are internal rigid parts and make frame of the body.

Bones produce blood, store minerals and support and protect various organs of the body.

Muscles are made of elastic tissues, they cause motion of the body.

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