Lec 1 Flashcards
Why digestion it’s important
/because the body can not be benefit from food and fluid without digestion
What is the pharynx composed of .
1-mucosa
Epithelium : non keratinised squamous epithelium
Lamina propiria ; dense fibrous layer contain elastic fibres and mucus glands
Muscular is mucosa ; not found in
2-submucosa : not found
3- muscularis externa : outer oblique and inner longitudenal striated muscle
4-fibrous tissue : thin layer of fibrous connective tissue that connect the pharynx to adjacent structures
What is oral cavity composed of
Regenerative stratified epithelium
Submucosal connective tissue
What is the most variable component and what does it contain
Mucosa or mucus membrane contains
1-surface epithelium
2-lamina properia
3- muscularis mucosa
What is the digestive system
Serious of hollow organs joined together in long twisting tube from mouth to the anus
What is the difference between adventitia and serosa
Adventitia: continuous with adjacent organ or tissue
Serosa: lining the gut wall which is free and mobile
What is the constitution and function of adventita
Constitution: two layer of loose connective tissue (fibrous or adipose )
Function: covering the external surface of an organ and serving to hold the organ on it’s place and bind to adjacent tissues
What are types of hormone secretions
Paracrine : hormones that have the ability to affect only the vicinity of gland secreting it
Autocrine: hormones that have the ability to connect to its receptors such as pain and inflammation
Endocrine: hormone have the ability to secreting hormone to stream or tissues directly
Exocrine: glands secreting hormones via ducts
What are the two nerve plexus that the centric US made up of in the wall of the gut
Submucesal plexus: missehets plexus mesentric plexus: aurpach plexus
What are the divisions of nervous system and which ‘ one is related to digestive system
Somatic NS and autonomic NS and autonomic contain sympathetic ns and para sympathetic ns and enteric which is related digestive system
Submucosa constitution function and contents
Fibroelastic loses connective tissue contain vessels and nerves of submucosal plexus (misseners plexus) and allow expansion during passage of food
Serosa composition and function
Consist of layer of cells and thin layer of connective tissue and secrets serial fluid that reduce from friction during movement
Secretion about __ __ ml/day
Saliva, TCL, bi le and variety of enzymes secreted by
7500 - exocrine glands
. Palmitic saturated or no
Aleic acid saturated or not
leinolenic saturated or not
Saturated
Not saturated (one double bond )
Not saturated (two double bonds )
OEsophagus
Mucosa e non keratinised squamous epithelium prevent fear and wear
Submucosa: allow expansion during passage of food
