2. Chew, Taste and Swallow Flashcards
What are lips and cheeks composed of?
Skeletal muscle embedded in elastic fibro-connective tissue
What epithelia are the lips and cheeks lined with?
Stratified squamous
Are the lips and cheeks keratinised? Where?
Slightly on the gums, tongue and hard palate
Describe the composition of the tongue
Skeletal muscle for the body and root
Covered with a mucous membrane
Where does the oesophagus pass down?
Midline of thorax
Pierces diaphragm at oesophageal hiatus
What is the oesophagus innervated by?
Vagus nerve
Describe the composition of the mucosa and their shape
Non-keratinised, stratified squamous epithelium
Longitudinal folds
Describe the composition of the muscularis
Skeletal, transitional and smooth in each portion, respectively
What connective tissue is the upper oesophageal sphincter composed of?
Fibrous
What is the lower oesophageal sphincter also known as?
Gastro-oesophageal sphincter
What receptors detect taste?
Chemoreceptors in taste buds
What sense is close to taste?
Smell - 80% of taste is actually smell
Name the 5 primary tastes
Sweet Sour Bitter Salt Umami
What is a papilla?
The small bumps on the tongue - known as taste buds
Name the different types of papillae
Filiform
Fungiform
Circumvallate
Foliate