Breathing or ventilation, Biology

VENTILATION OR BREATHING -

15-16 / minute (In Rabbit 36-38). In children 35 / 1 minute.

1.      INSPIRATION

  • In take of air is known as inspiration. First of all external I.C.M. is contracted.
  • Ribs become straight. Sternum comes out 1.5 cm. It is thoracic breathing (25%).
  • Radial muscles of diaphragm are contracted. It becomes flat.
  • It is abdominal breathing or true breathing (75%). Both breathing collectively known as Eupnia.
  • Thoracic breathing takes place in deep breath only. It gets stimulation from cerebrum.
  • Due to all volume of thoracic cavity is increased & pressure is decreased. (1-3 mm Hg than 760 mm Hg).
  • To fullfil this pressure air enters into lungs.

1574_inspiration and expiration.png

2.      EXPIRATION -

  • All muscles are relaxed so it is passive process. Volume is decreased.
  • Pressure is increased (1-3 mm Hg than 760 mm Hg). Air is given out.
Posted Date: 10/1/2012 8:58:29 AM | Location : United States







Related Discussions:- Breathing or ventilation, Assignment Help, Ask Question on Breathing or ventilation, Get Answer, Expert's Help, Breathing or ventilation Discussions

Write discussion on Breathing or ventilation
Your posts are moderated
Related Questions
Infraorbital nerve and vessels The infraorbital nerve exits through the infraorbital foramen. This foramen and the neurovascular contents are within 5 to10mm of extremely resor

Define Types of Non Enzymatic Browning Reaction? Two major types of non enzymatic browning reaction have been recognized to occur in foods during processing. 1. Maillard Rea

GENERAL PREVENTIVE MEASURES - 1.      Infected animal should be immediately isolated and looked after. 2.      The premises should be disinfected whenever there is an outbre

State the term - localisation scales The localisation scales are also empirically derived, being based on studies of patients with localised brain lesions. There are frontal,

Theca - body form Protozoans It is a close-fitting hard structure around the plasma membrane, mainly composed of cellulose. It can be compared with the ceil wall of a plant ce

What are the predicted cell morphology, cell arrangement and gram stain results for each of the follow? 1. Bacillus megaterium 2. Staphylococcus aureus 3. Serratia marcesc

Q. What is meant by the substrates of enzymatic reactions? The Substrates are reagent molecules upon which enzymes act. The enzyme has spatial binding sites for the attachmen

examples on woody perennial Angiosperm species and herbaceous annual angiosperm species. thanks

Explain National Nutritional Anaemia Prophylaxis Programme? National Nutritional Anaemia Prophylaxis Programme addresses iron and folate deficiency anaemia (IDA). Preschoolers

How did the experiments of Redi and Pasteur refute the hypothesis of spontaneous generation? To refute the impulsive generation hypothesis many experiments were performed. The