• Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

Description of the Respiratory Tract of Man

Extracts from this document...


Description of the Respiratory Tract of Man Air is drawn in through the nose into the nasal cavity in which the air is warmed to the required temperature and filtered by nasal cilia. Next the air passes epiglottis, which is a flap of tissue that prevents food from passing into the trachea. ...read more.


The trachea then divides into two smaller tubes called bronchi, which also have 'C' shaped rings of cartilage. These carry air into each lung. Inside the lung, the bronchi divide into even smaller tubes called bronchioles. At the end of each of these bronchioles are small air sacs called alveoli the walls of which are only one cell thick. ...read more.


It is the diaphragm that controls the breathing process. It is a sheet of muscle that separates the thorax from the abdomen. While breathing in, the lungs increase in size and move upwards, when we breathe out the lungs move down and decrease in size. To prevent damage to the lung is the pleural membrane, which is filled with a thin layer of lubricating fluid so that movement is lubricated. To protect the thorax is the ribcage, which comprises of twelve sets of ribs. Amar Karia 01/05/2007 ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our GCSE Humans as Organisms section.

Found what you're looking for?

  • Start learning 29% faster today
  • 150,000+ documents available
  • Just £6.99 a month

Not the one? Search for your essay title...
  • Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

See related essaysSee related essays

Related GCSE Humans as Organisms essays

  1. Cardiovascular and Respiratory Systems

    I have found out that the running puts a lot of pressure and strain on the cardio and respiratory system in the short term of the exercise and can cause some problems if not doing the exercise properly. The heart has to beat faster and work harder, as the muscles need more blood to function.

  2. Stem Cell Research

    Their will to heal their sick child may overcome their Methodist beliefs. It is easy to see why people are against stem cell research, when images such as this on to the right are distributed. This image is sourced from "precious life.com".59 It is meant to emotionally affect the viewers,

  • Over 160,000 pieces
    of student written work
  • Annotated by
    experienced teachers
  • Ideas and feedback to
    improve your own work