(Slide 1) Lecture Notes: Respiratory System I. (Slide 2) The Respiratory Tract A) Major structures and regions of the respiratory Tract/Route INTO body 1) nose 2) nasal cavity 3) pharynx 4) glottis 5) larynx 6) trachea 7) Primary (main) bronchi 8) bronchioles 9) alveoli B) (Slide 3) Nose and Nasal Cavities 1) Structures: (a) nares/nostrils separated by nasal septum (b) lined with mucosa (1) epithelial tissue (2) goblet cells (3) lysozyme (c) palate separates oral and nasal cavities 2) Function: conditions incoming air (a) warms-blood vessels (b) moistens—mucous and watery (c) cleans (1) filters (hairs) (2) mucus traps (d) olfaction (smell-olfactory sensory receptors) C) (Slide 4) Pharynx 1) Structure: (a) regions: oropharynx and nasopharynx (b) tonsils: immune function 2) Function: passageway (food and air) D) (Slide 5) Larynx 1) structure: (a) epiglottis (1) elastic cartilage (2) closes glottis during swallowing (b) glottis: opening (c) hyaline cartilages (1) adam’s apple (d) vocal cords (1) CT
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(Slide 1) Lecture Notes: Respiratory System I. (Slide 2) The Respiratory Tract
A) Major structures and regions of the respiratory Tract/Route INTO body