Ailmentary Canal Flashcards
Four Functions of the Digestive System
Digestion
Secretion
Absorption
Motility
Four Layers of Ailmentary Canal (tunics) Deep to Superficial
Mucosa
Submucosa
Muscularis Externa
Serosa/Adventitia
Three layers of Mucosa from Deep to Superficial
Epithelium
Lamina Propria
Muscularis Mucosae
2 Types of Muscle in the Muscularis layer
Circular muscle
Longitudinal muscle
What parts of the body is the Epithelium Stratified Squamous
Mouth
Oesophagus
Anal Canal
What parts of the body is the Epithelium Simple Columnar
Stomach
Small Intestine
Large Intestine
What kind of Tissue is the Lamina Propria
Loose Connective Tissue
what kind of tissue does the Muscularis Mucosae contain
Thin Smooth Muscle
What kind of tissue is the Submucosa made of
Thick Iregular Connective Tissue
What structures does the Submucosa contain
Blood Vessels
Neurones
Lymphatic vessels
What kind of tissue is the Serosa/Adventitia made of
Connective tissue
Adventitia or Serosa is found OUTSIDE the PERITONEAL CAVITY, attatching the oesophagus and rectum to surrounding structures
Adventitia
Adventitia or Serosa is found INSIDE the PERITONEAL CAVITY, surrounding the stomach, small and large intestine
Serosa
What does the Inner Layer of the Muscularis Externa consist of
Circular Muscle (Constricts Lumen)
What does the Outer Layer of the Muscualris Externa consist of
Longitudinal Muscle (shortens tube)
Submucosal Plexus + Myenteric Plexus = ?
Enteric Nervous System
What Nerve gives PARASYMPATHETIC innervation to the gut
Vagus Nerve
What Nerve gives SYMPATHETIC innervation to the gut
Splanchnic Nerve
What does the vagus nerve stimulate in the gut
Secretions
Motility
What does the splanchnic nerve inhibit in the gut
Secretion
Motility
what nerves are responsible for salivation
Facial Nerve and Glossopharyngeal Nerve
