Ebook Textbook of histology colour atlas (5/E): Part 2
➤ Gửi thông báo lỗi ⚠️ Báo cáo tài liệu vi phạmNội dung chi tiết: Ebook Textbook of histology colour atlas (5/E): Part 2
Ebook Textbook of histology colour atlas (5/E): Part 2
11: Respiratory System“Pattern of right and left bronchial tree are mirror images, but the heart on left side gives less room”The respiratory system p Ebook Textbook of histology colour atlas (5/E): Part 2provides for the intake of oxygen and elimination of carbon dioxide, which are transported to and from the tissues of the body by the circulatory system.Organs of respiration are nose comprising external nares, nasal cavity, posterior nares including the paranasal air sinuses.NasopharynxLarynxTrache Ebook Textbook of histology colour atlas (5/E): Part 2aPleura, lungs including the bronchial tree.Functionally the respiratory system is divided into:i.Conducting part which comprises nose, nasopharynx, lEbook Textbook of histology colour atlas (5/E): Part 2
arynx, trachea and bronchial tree till the level of terminal bronchioles. These are always patent for respiration.ii.Respiratory part comprising of re11: Respiratory System“Pattern of right and left bronchial tree are mirror images, but the heart on left side gives less room”The respiratory system p Ebook Textbook of histology colour atlas (5/E): Part 2NOSE, NASOPHARYNX AND LARYNXNOSEComprises two nasal cavities separated by a nasal septum. Its functions are:i.Filtering, warming and moistening the inspired airii.Conducting air to and from the lungsiii.As an organ for smell. The receptors for smell are placed in the upperone-third of nasal cavity a Ebook Textbook of histology colour atlas (5/E): Part 2nd is lined by olfactory mucosa with special olfactory neurons. It is described in Chapter 19. The lower two-thirds of nasal cavity is lined by respirEbook Textbook of histology colour atlas (5/E): Part 2
atory mucosa, which is pseudostratified ciliated columnar epithelium with goblet cells. The lamina propria contans mucous and serous secreting glands,11: Respiratory System“Pattern of right and left bronchial tree are mirror images, but the heart on left side gives less room”The respiratory system p Ebook Textbook of histology colour atlas (5/E): Part 2 Goblet cells produce mucus to trap foreign particles. The cells in lamina propria provide necessary immunity.Clinical FeaturesThe nose, nasopharynx get attacked by various bacteria pollutants and allergans causing sinusitis, and tonsillitis.The venous plexus may rupture due to picking/heat, leading Ebook Textbook of histology colour atlas (5/E): Part 2 to epistaxis (bleeding from nose).NASOPHARYNXIt is situated between the posterior nares of nose and nasopharynx. It is lined by pseudo-stratified cilEbook Textbook of histology colour atlas (5/E): Part 2
iated columnar epithelium with goblet cells.LARYNX/VOICE BOXIt is made up of number of cartilages. It begins at root of tongue and ends at the trachea11: Respiratory System“Pattern of right and left bronchial tree are mirror images, but the heart on left side gives less room”The respiratory system p Ebook Textbook of histology colour atlas (5/E): Part 2artilage of larynx. There is lamina propria on both sides of the elastic cartilage. The anterior surface of epiglottis facing the tongue and upper pail of posterior surface are lined with stratified squamous non-keratinised epithelium. The rest of the posterior surface is lined with respiratory epit Ebook Textbook of histology colour atlas (5/E): Part 2helium, i.e. pseudostratified ciliated columnar epithelium.TRACHEA AND CONDUCTING PARTTrachea is a thin walled flexible tube. Its lumen is kept permanEbook Textbook of histology colour atlas (5/E): Part 2
ently patent by means of C-shaped hyaline cartilages. The trachea is lined by pseudostrati[ied ciliated columnar epithelium with interspersed goblet c11: Respiratory System“Pattern of right and left bronchial tree are mirror images, but the heart on left side gives less room”The respiratory system p Ebook Textbook of histology colour atlas (5/E): Part 2glands (Fig. 11.1).These ducts open on the free surface of the epithelium.The deeper part of lamina propria is the submucosa which contains both mucous and serous acini that keep the epithelium moist. The mucus provided by mucous acini entangle the dust particles. Cilia move the mucous towards phary Ebook Textbook of histology colour atlas (5/E): Part 2nx. Coughing also moves the mucus towards larynx and pharynx to be expelled from the respiratory system.The most characteristic feature of trachea isEbook Textbook of histology colour atlas (5/E): Part 2
its supporting framework of 16-20 C-shaped hyaline cartilages that encircle it on its ventral and lateral aspects. The posterior wall of the trachea a11: Respiratory System“Pattern of right and left bronchial tree are mirror images, but the heart on left side gives less room”The respiratory system p Ebook Textbook of histology colour atlas (5/E): Part 2ed by perichondrium on all sides which separates it from the neighbouring structures. The outermost layer is the adventitia which contains blood vessels and nerves.Lamina propriaPseudostratrtied ciliated columnar epithelium With gohlet cells Ebook Textbook of histology colour atlas (5/E): Part 211: Respiratory System“Pattern of right and left bronchial tree are mirror images, but the heart on left side gives less room”The respiratory system pGọi ngay
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