organisation of the cells into tissues Flashcards
what are the salivary glands
Parotid, submandibular, sublingual
- striated ducts
endothelium
sits on basal lamina
lamina propria
loose connective tissue
Muscularis mucosae
thin layer of smooth muscle
submucosa
loose connective tissue
Muscularis externa
2 thick layers of thick muscle (inner circular layer and outer longitudinal layer)
Serosa or adventitia
Outer layer of connective tissue; either suspends digestive tract (serosa) or attaches to other organs (adventitia)
Absorptive mucosa
- Simple columnar epithelium with villi and tubular glands
- Small intestine
protective mucosa
Non-keratinized stratified squamous epithelium
Found in:
- Oral cavity
- Pharynx
- Oesophagus
- Anal canal
Secretory mucosa
- Simple columnar epithelium with extensive tubular glands
- Stomach
Protective and absorptive mucosa
- Simple columnar epithelium with tubular glands
- Large intestine
ENS
Nervous system of the GI trac
bronchi:
large diameter airways with hyaline cartilage in their wall
bronchioles:
small diameter airways, no cartilage, mainly smooth muscle
alveoli:
site of gas exchange, lined by simple squamous epithelium