Human Histology Lab 2 PDF 2020-2021

Human Histology Lab 2 1st stage 2020-2021 LECTURER:Assisstant lecturer.Nabigh A Nagi M.Sc. Respiratory system Layouts  Organs of the respiratory system  The upper respiratory tract  The lower respiratory tract Organs of the respiratory system The Respiratory tract Nasal cavity /nasal f...

Human Histology Lab 2 1st stage 2020-2021 LECTURER:Assisstant lecturer.Nabigh A Nagi M.Sc. Respiratory system Layouts  Organs of the respiratory system  The upper respiratory tract  The lower respiratory tract Organs of the respiratory system The Respiratory tract Nasal cavity /nasal fossa  The nasal cavity consist of 2 structure :  1-external vestibule  2-internal nasal fossa  Pharynx , Larynx (voice box)  Pharynx connect the nasal cavity with the larynx  Nasopharynx  Oropharynx  Hypopharynx  Larynx connect the pharynx and trachea  Epiglottis  True vocal cords  False vocal cords Larynx (Voice box) Nasal cavity  Olfactory organ A specialized area of the mucous membrane in the superior concha ,located in the roof of the nasal cavity. Consist of 4 types of cells:- 1-olfactory cells 2-supporting cells 3-basal cells 4-Bowman’s gland cells Nasal cavity Nasal cavity Nasal cavity Larynx(voice box)  Vocal cords are lined by stratified squamous epithelium Respiratory epithelium  Most of the conducting portion is lined with ciliated pseudostratified columnar epithelium. typically it consist of mucosa (4 types of cells) and lamina propria (connective tissue) 1-cilliated columnar cells 2-Mucous goblet cells 3-Basal(short) cells 4-Small granule cells(Dendritic cells) Respiratory epithelium Respiratory epithelium Respiratory epithelium Trachea Trachea wall layers Trachea wall layers Bronchi  Extrapulmonary bronchi: resemble to Trachea in structure (contain hyaline cartilage) include  Primary bronchi  Secondary bronchi except right middle lobe bronchus  Intrapulmonary bronchi include:  Secondary bronchi right middle lobe bronchus  Tertiary bronchi  bronchioles Extrapulmonary bronchi Extrapulmonary bronchi layers Intrapulmonary bronchi Intrapulmonary bronchi Intrapulmonary bronchi Intrapulmonary bronchi  Clara cells in bronchiole wall Intrapulmonary bronchi Intrapulmonary bronchi  Alveoli Alveoli Alveoli End  Thanks a lot for attention  Prepared by:  Dr.Nabigh Al-Sharifi  B.sc-M.Sc.  2020-2021