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Lecture 10

BIOL 150A Lecture Notes - Lecture 10: Abdominal Cavity, Thoracic Cavity, Hyoglossus


Department
Biology
Course Code
BIOL 150A
Professor
nyugen
Lecture
10

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Lab 8
Respiratory Epithelium
Tissue that forms the mucosa that lines most of the nasal cavity, the paranasal sinuses and the
repiratory passage
oPseudostratified ciliated columnar epithelial tissue
4 pairs of paranasal sinuses
oEthmoid- above and between eyes
oMaxillary- surround nasal cavity
oFrontal- above and between eyes
oSphenoid- behind the ethmoid
Nose and Nasal Passages
Locate in the split head model
oExternal nares (nostrils)
oSuperior/ middle/ inferior conchae
oNasal septum
oHard palate
Function of the nasal conchae
oIncrease surface area to nasal cavity to warm, moisten and filter air, direct air to trap
particles
Bones that form the bony part of the nasal septum
oPerpendicular plate of the ethmoid bone
oVomer
oCartilage of the septum
Pharynx
Nasopharynx
Location of nasopharynx
oLies posterior to the nasal cavity
oSuperior to soft palate
Locate
o Internal nares
oOpening of auditory tube/ Eustachian tube/ pharyngotympanic tube
oPharyngeal tonsils
oSoft palate
Function of the auditory tube
oConnects nasopharynx to tympanic cavity- middle ear
Another name for pharyngeal tonsils
oAdenoids
Location of soft palate
oForms floor of nasopharynx
Oropharynx
Location of oropharynx
oExtends from soft palate to hyoid bone
Function of oropharynx
oPassageway for both food and air
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Locate
oUvula
oPalatine tonsils
oLingual tonsils
oSublingual salivary glands
oSubmandibular salivary glands
oParotid salivary glands
Function of the uvula
oBlocks entrance to the nasopharynx and prevents food from entering nasal cavity
Location of uvula
oDangles from posterior part of the soft palate
Laryngopharynx
Location of laryngopharynx
oExtends from hyoid bone to the esophagus
Structure
oThe entrance to the respiratory passages and the GI tract are located here
Function of laryngopharynx
oA passageway for both food and air in the pharynx
Locate
oEntrance to esophagus
oGlottis
oEpiglottis
Function of glottis
oEntrance to the trachea
Function of epiglottis
oAllows air to pass through to larynx into the rest of the respiratory system
oPreventing the entry of both liquids and solid food into the respiratory tract- trachea
Split Head Model
Locate
oFrontal sinus
oNasal cavity
oNasal conchae
oHard palate
oOral cavity
oSoft palate
oLingual tonsils
oEpiglottis
oHyoid bone
oTrachea
oSphenoid sinus
oPharyngeal tonsils
oUvula
oPalatine tonsils
oVocal folds
oEsophagus
oLarynx
oSubmandibular tonsils
Larynx
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Location of larynx
oAttached to hyoid bone above and the trachea below
Locate
oThyroid cartilage
oCricoid cartilage
oEpiglottis
Number of cartilages in the larynx
o9
Type of cartilage that forms cricoid cartilage
oHyaline cartilage
Type of cartilage that forms epiglottis
oElastic cartilage
Locate in interior of larynx
oVocal folds
oGlottis
Function of vocal folds
oTrue vocal cords
oTissue folds contain elastic vocal ligaments- vibration of these folds produces sound
waves
The glottis is the entrance to
oThe larynx
Locate on the larynx model
oTrachea
oEpiglottis
oHyoid bone
oTracheal cartilages
Thyroid cartilage
Cricoid cartilage
Corniculate cartilage
Arytenoid cartilage
oVocal folds
oLaryngeal prominence
oVocal ligament
Trachea and Bronchi
Locate on the heart and lung model
oTrachea and tracheal cartilages
oLeft and right pulmonary bronchi
oSecondary (lobar) bronchi- one serves each of the lobes of the lung
oTertiary (segmental) bronchi
The bronchioles branch into
oBronchioles
The bronchioles branch into
oTerminal bronchioles
The respiratory structures which branch from the terminal bronchioles are the
oRespiratory bronchioles
The respiratory bronchioles terminate into
oAlveolar ducts
Alveolar ducts lead to terminal clusters of
oAlveoli
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