Diagram Of The Lung Gcse

Bbc gcse bitesize science gaseous exchange in the lungs revision.

Diagram of the lung gcse. Bbc bitesize gcse biology respiratory system revision 1. Bbc bitesize gcse biology wales 2016 onwards the. These lead into the lungs. Exercise and smoking both affect the lungs and circulatory system.

Ii explain why people with miners lung have a lower concentration of oxygen in their blood. Two common defects of the eyes are myopia short sightedness and hyperopia long sightedness. The lungs are connected to the outside via the trachea windpipe. 1 mark a i describe the path by which oxygen goes from an alveolus to the blood.

In this video we look at how gases are exchanged in the lungs. Bbc bitesize gcse biology. Air enters the body and is warmed as it travels through the mouth and nose. The trachea is a tube kept in a rigid shape due to rings of cartilage.

The human respiratory system is adapted to allow air to pass in and out of the body and for efficient gas exchange to happen. The lungs are enclosed in the thorax surrounded and protected by 12 pairs of ribs. Learn about and revise the respiratory system with this bbc bitesize gcse pe edexcel study guide. Lungs diagram labeled gcse.

The larynx or voice box is located at the top of the trachea while at the bottom end it branches into two bronchi. The ribs are moved by two sets of intercostal muscles. Learn and revise about the structure of the skeletal system and the vertebral column with this bbc bitesize gcse pe edexcel study guide. There is a muscular diaphragm below the lungs.

We start by looking at the overall structure of the lungs and then explore how the alveoli are adapted for maximum diffusion of. In both cases rays of light do not focus on the retina so a clear image is not formed. Structure and function of the respiratory system passage of air into the lungs. Breathing coronary heart disease functions of the circulatory system gcse revision nervous system neurones worksheet by beckystoke.