Notes - Our Body
Category : 3rd Class
Our Body
Interesting Facts
ORGANS
Our body is made up of cells. Cells are the smallest unit of life which join together and form tissues. Many similar tissues combine together and perform a common function called an organ.
Sense organs: As we already know that we have five sense organs in our body which help us to know the world around us. Let us study each of them in detail-
1 |
Eyes: The eyes help you to see things.
|
|
2 |
Ears: you hear different kinds of sound with your ears.
|
|
3 |
Tongue: Tongue helps us to know the state of food.
|
|
4 |
Nose: Nose helps in smelling different kinds of smell.
|
|
5 |
Skin: skin helps us to feel anything.
|
|
Interesting Facts
ORGAN SYSTEMS OF OUR BODY
Organ system: An organ system is a group of organs and body parts that work together to perform a specific function of our body.
1 |
Digestive system: digestive system breaks down the large insoluble food molecules into soluble so that they can be absorbed into the blood. Problem: uneasiness and indigastion. Prevention- 1. Eat healthy food; 2. Chew the food properly; 3. Drink plenty of water for proper digestion. |
|
2 |
Respiratory system: It helps to take in oxygen from the air and release out carbon dioxide from the body. Nose, wind pipe and lungs are respiratory organs of our body. Respiration process takes place in lungs. Problem: Cough and sneezes; asthma and allergy. Prevention- 1. We should take in fresh oxygen; 2. Exercise also keeps our respiratory system healthy. |
|
3 |
Skeletal system: all the bones in our body together from skeletal system. The body framework of our body is called skeleton. The skeletal system gives shape and support to our body and also protect soft inner parts of our body. Problems: Too much pressure on bones and joints, causes fracture. Prevention- 1. Do exercise and take healthy food. 2. We should drink milk and eat dairy products rich in calcium to build strong bones. |
|
4 |
Muscular system: Muscles are attached to the bones and help in movements of the body. Problems: Muscles cramps and muscle fracture. Prevention: Using and exercising of muscles. |
|
5 |
Nervous system: Brain spinal card and nerves make the nervous system. Nervous system helps to control and coordinate all the activities of our body. Brain controls all the activities and major organs of nervous system. Problem- Headache, migraine and development of tumour (dangerous problem). Prevention- 1. Protects our brain from any injury; 2. Wearing helmet while reading a bike. |
|
6 |
Circulatory system: Heart and blood vessels from this system. Problem: Fainting and heart attack. Prevention: 1. Eat less fat and salt in diet; 2. Exercise regularly. |
|
7 |
Excretory system: Kidney, ureter, urinary bladder and urethra from the system. Kidney filters excess water and ammonia from the blood and make the blood pure. Problems: Kidney fails and the blood is not filtered properly. Prevention- 1. Eat healthy diet and do exercise; 2. Drink plenty of water. |
|
Do you know?
Interesting Facts
Do you know?
Do you know?
You need to login to perform this action.
You will be redirected in
3 sec