Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Pulmonary Ventilation:Pulmonary ventilation is the process by which gasses flow between the atmosphere and lung alveoli. Air moves into the lungs when air pressure inside the lungs is less than the air pressure in the atmosphere and out of the lungs when the pressure inside the lungs is greater than the atmosphere pressure. Breathing in is called inhalation or inspiration. Just before each inhalation air pressure inside the alveoli is equal to the atmospheric pressures, 760 rnmHg, and the intrapleural pressure is 756 mmHg. With inspiration, the cavity of the thorax is enlarged as external intercostals muscles and the diaphragm contract causing a decrease in the intrapleural pressure to about 754 mmHg. The parietal pleura lining the cavity is pulled outward in all direction and the visceral pleura and lungs are pulled along with it. As the lung volume increases in this way the pressure inside the lungs i.e. 760 mmHg drops to 758 mmHg. Thus a pressure difference is established between the atmosphere and alveoli and air flows into the lungs from the atmosphere. Breathing out or exhalation (expiration) starts when the inspiratory muscles and diaphragm relaxes, the dome of the diaphragm moves up, the ribs are depressed leading to decrease in the lung volume and increase in the lung pressure (763 rnm Hg). Air flows out form the area of higher pressure to the area of lower pressure in the atmosphere. The elastic recoil of the chest wall and the lungs is due to the recoil of elastic fibers and the inward pull of surface tension due to the alveolar fluid. A thin layer of alveolar fluid coats the surface of the alveoli and exerts a force known as surface tension. Exhalation is a passive process while inhalation or inspiration is an active process.
Immobilisation of cells Immobilisation of cells enables Re-use of biomass by rotation of cells Separation of cells from the medium and Leaching of metab
Explain Use of food Additives - method of food preservation? Food additives may be defined as substances added intentionally to food, generally, in small quantities to improve
Biochemistry : The chemistry of living organisms that covers all the chemical reactions occurring in our body.
Are the limbs modified into wings of bats and the wings of birds examples of evolutionary analogy or homology? What about whale fins compared to fish fins? Bat and bird wings h
Light and Heavy Soils The presence of silt and especially clay in a soil imparts to it a fine texture, and a slow water and air movement. Such a soil is highly plastic becoming
Hydrocele A hydrocele is a painless water-filled cyst found in front of the testis.It is brightly translucent and cannot be emptied by pressure of a 'flap valve' at its jun
What is Metabolism ? Metabolism is usually defined as the sum of the chemical processes required to sustain life. These processes, called metabolic pathways, are catalyzed by
Q. Does glycolysis take place within the mitochondria? Glycolysis happens in the cytosol and not in the mitochondria. Pyruvic acid molecules later enter mitochondria to partici
Explain the Competitive behaviour of social animal group dominance behaviours removal of individuals to other groups which minimises inbreeding eg lions, apes.
Q. Balloon Aortic Valvuloplasty for aortic stenosis? This is the procedure of choice in children and young individuals where the valve is not calcified. In elderly patients wit
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd