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.
PHYSICAL LAYOUT In this section we shall focus on location floor plan, ventilation, lighting environmental temperature and humidity, acoustic characteristic, communication sy
Q. Where in the body is the thyroid gland located? The thyroid is located in the anterior cervical region (frontal neck) in just below the larynx and front of the trachea and i
Which of the below describes the type of fruit characterized as a dry, simple, one-seeded indehiscent (pron: in-deh-HISS-ent) fruit with seed attached to one ovary wall at only one
Explain about the Classification of Fungi? The fungi, as you may recall reading above, is now placed in a separate kingdom called Myceteae. Traditionally, fungi were divided in
Classic Procedure: The approach is the same as described earlier for open mitral valvotomy. The excision starts with an anterior incision on the anterior leaflet at 12o'clock p
Counseling children Assess the child's stage of development. Adjust counseling for a child's dependency needs, lack of experience and the development tasks faced by him
Define the Effect of Deficiency of Vitamin K? Both excess and low intakes can have serious implications on human health, although such conditions arise rarely, these can often
Bone Cells Bone cells may be divided into two broad classifications depending on whether they make bone or resorb it. Osteoblasts make bone, while Osteoclasts resorb or take aw
Whenever a pair of alleles has different alleles is there dominance between them? Not in all cases of a gene includes two different alleles is the dominance complete. There are
Hypothalamus and Pituitary The most obvious neuroendocrine link is between the hypothalamus and pituitary. The hypothalamus is a part of the brain which is connected to the pi
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