QUIZ 10 LETS GO Flashcards
seven processes of involved in getting food into the body
ingestion, mechanical processing, digestion, secretion, absorption, excretion, compaction
main structures of the digestive tract
oral cavity, pharynx, esophagus, stomach, small intestine, large intestine
accessory organs to digestive tract
teeth, liver, tongue, pancreas, salivary glands, gallbladder
four layers of the digestive tract wall (General)
mucosa, submucosa, muscular externa, serosa
three layers of mucosa
mucosa epithelium - stratified or simple squamous epithelia
lamina propria - areolar connective tissue
muscularis mucosae - smooth muscles tissue
what is submucosa made of
areolar CT
directions of the two layers of muscularis externa
internal circular, external longitudinal
serosa composed of what two tissue layers - where is there no serosa and what replaces it?
mesothelium (simple squamous), loose CT
no serosa in the pharynx, esophagus and rectum, instead there is a fibrous sheet called the adventitia
characteristics of smooth muscle
mono-nucleated, spindle shaped, short, non striated, autonomic innervation, pacesetter cells initiate contraction
characteristics of skeletal muscle
multinucleated, cylindrical, long, striated, innervated my somatic motor nerves
two serous membrane of the ventral body cavities
parietal peritoneum : covers inner surface of abdominal cavity walls
visceral peritoneum: peritoneal serosa covering outer surfaces of the organs laying within the cavity
special name for serous membranes (simple squamous epithelium) lining body cavities?
mesothelium
what is the peritoneal cavity?
potential spice between the parietal and visceral peritoneums’
what is a mesentary?
a double layers of serous membrane that supports and stabilizes the position of an organ in the abdominopelvic cavity and provides a route for associated blood, lymph vessels and nerves
what tissues line the oral cavity?
oral mucosa - non keratinized stratified squamous epithelia. No serosa, adventitia instead.