Chapter 12: Head and Neck Flashcards
(87 cards)
respiratory tract
a series of tubes through which air moves
nose
visible structure of the respiratory tract
has skin, hyaline cartilage, bone, and a mucosa
nares
commonly called nostrils
lead to the nasal cavity
nasal cavity
space inside the nose as well as the nasal cavity of the skull
divided into right an left parts by the nasal septum
nasal septum
has hyaline cartilage, bone, and a mucosa
divides the right and left halves of the nasal cavity
what is the nasal cavity lined with?
- the skin covering the nose extends through the nares and lines the first part of the nasal cavity
- olfactory mucosa (lines the roof of the nasal cavity)
- respiratory mucosa (lines the rest of the nasal cavity)
- respiratory mucosa consists of pseudo stratified ciliated epithelium( goblet cells are found here) and a layer of areolar connective tissue which is highly vascular
pharynx
tube
- extends from nasal cavity to larynx and esophagus
- divided into nasopharynx, oropharynx, and laryngopharynx
two layers of respiratory mucosa
- pseudo stratified ciliated epithelium (where goblet cells are found)
- areolar connective tissue (highly vascular)
what lining is the nasopharynx?
respiratory mucosa
- which consists for pseudo stratified ciliated epithelium (where goblet cells are found) and areolar connective tissue (highly vascular)
what is the mucosal lining of the oropharynx and laryngopharynx ? why?
nonkeratinized stratified squamous epithelium
- it needs better protection than the nasal cavity because food and hot drinks etc go through there
larynx
voice box composed of several cartilages
-houses vocal folds (involved in speech)
vocal folds are involved with what?
speech
what is the mucosal lining of the larynx?
- the beginning of larynx is nonkeratinized stratified squamous epithelium (same as the laryngopharynx)
- inferior to that is pseudostratified ciliated epithelium (has goblet cells)
trachea
composed of mucosa, submucosa, cartilage, and adventitia
what is the mucosal lining next to the lumen in the trachea?
pseudostratified ciliated epithelium
submucosa is composed of
connective tissue
c shaped cartilages are composed of
hyaline cartilage connective tissue
what are the posterior ends of the c shaped cartilages connected by
smooth muscle tissue and connective tissue
what is the connective tissue of the adventitia
dense connective tissue
the digestive system is composed of what
the digestive tract and accessory organs
digestive tract
a tube that extends from the mouth to the anus
oral cavity and what mucosa is it lined by
commonly called the mouth non keratinized stratified squamous epithelium
palate
roof of the oral cavity and separates the nasal and oral cavities
esophagus
has four layers - mucosa, submucosa, muscularis externa, and adventitia