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Presentation On Breathing And Exchange Of Gases

Home > PowerPoint Slides > Presentation On Breathing And Exchange Of Gases
Published in: Biology
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Breathing and exchange of gases for entrance exam.

Akanksha / Outside India

3 years of teaching experience

Qualification: BDS (Himachal Dental College , Mandi - 2022)

Teaches: Anatomy, Bio Technology, Biology, Botany, Zoology, AIIMS, AIPMT, BDS, NEET

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  1. BREATHING AND EXCHANGE OF GASES BY AKANKSHA
  2. Definition of breathing and respiration The process of exchange of 02 from the atmosphere with C02 produced by the cells is called breathing, commonly known as respiration akanksha
  3. HUMAN RESPIRATORY SYSTEM Air tight chambers Bronchus t end o' rlb Lun Diapbragn Dome shape Akank ha ottis laryt.x Trachea Pleural membran •eoli Pleural fluid ronchiole
  4. DETAILS A pair of external nostrils opening out above the upper lips. It leads to a nasal chamber through the nasal passage. Akanksha The nasal chamber opens into nasopharynx and it opens through glottis of the larynx region into the trachea. Pharynx the common passage for food and air. Larynx is a cartilaginous box, helps in sound production and hence called the sound box. Akanksha
  5. CONTINUE Akanksha During swallowing ,glottis can be covered by a thin elastic cartilaginous flap called epiglottis , prevent the entry of food into the larynx. Trachea is a straight tube. Extending up to the mid-thoracic cavity, And divides at the level of 5th thoracic vertebra into a right and left primary bronchi. Each bronchi undergoes repeated divisions to form the secondary and tertiary bronchi Oronchiolcs ending up in very thin terminal bronchioles.
  6. CONTINUEm. Akanksha Each terminal bronchiole gives rise to a number of very thin, irregular walled and vascularised bag-like structures called alveoli. L.ungs are situated in the thoracic chamber which is air-tight chamber. Lungs which are covered by a double layered pleura. Between double layered of pleura there is pleural fluid present. It reduces friction on the lung surface. Outer pleural membrane - close contact with the thoracic lining. Inner pleural membrane - contact with the lung surface.
  7. CONTINUE.... Akanksha External nostrils up to the terminal bronchioles is conducting part . The alveoli and their ducts are exchange part. Thoracic chamber is formed Dorsally by the vertebral column. Ventrally by the sternum. Laterally by the ribs. Lower side by the dome-shaped diaphragm.
  8. CONTINUE„.. Akanksha Respiration involves the following steps: Orcathing by which atmospheric air is drawn in and C02 rich alveolar air is released out. (ii) Diffusion of 02 and C02 across alveolar membrane. (iii) Transport of gases by the blood. (iv) Diffusion of 02 and C02 between blood and tissues. (v) Utilisation of 02 by the cells for catabolic reactions and resultant release of C02.
  9. el-IS)IUOIV

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