Did you know?

There are many human devices that are designed to imitate skeletal system, for exampel helicopter. Helicopter imitates dragonfly. Dragonfly's wings can move up and down.

Science Focus. 2009. Science for elementary school year IV. Bogor: Yudhistira.

Resumed by: Danar Kusuma

Terbitkan Entri

Lungs

Lungs is located inside the chest cavity (thorax). Inside the lungs, bronchioles branch into smaller and smooter branches. These smooth branches form a sac at its end called alveolus. Inside the alveolus occurs oxygen and carbon dioxide exchange.
(Source: Science Focus.2009. Science for elementary school Va.Bogor: Yudhistira) .

Disorder on Respiratory Organ

Respiratory organs cannot function well due to illness. Here are some of respiratory illness.

1. Influenza or cold is caused by virus. The symptoms are fever, headache, nasal congestion, and sometimes sore throat. The patient of influenza should rest well and eat nutritious food.
2. Asthma. Asthma is caused by bronchioles contriction. They have difficulty in breathing. Asthma is caused by substances, wich trigger alelergic, such as dust. It is difficult to be totally cured, but it can be controlled to decrease the symptoms. Medicine for asthma sufferer is meant to expand the respiratory tract muscles.(Source: Science Focus.2009. Science for elementary school Va.Bogor: Yudhistira)