Massage Flashcards
Pathway of Digestion
1) Mouth and Pharynx
2) Esophagus
3) Stomach
4) Small Intestine
5) Large Intestine
6) Liver and Gallbladder**
7) Pancreas**
* *accessory organs
Mouth and Pharynx’s role in digestion
Mastication=chewing
saliva=libricant to help food travel GI tract, begin chemical digestion
saliva contains amylase-enzyme that breaks down starches
Amylase
1st chemical that food encounters enzyme that breaks down starches
Changing names of food through digestion system
Food > Bolus/Chyme > Feces
Esophagus
muscular tube posterior to the trachea that connects the pharynx to the stomach
6 Functions of the Digestive System
1) ingestion–food comes in
2) secretion–saliva chemicals release to break it down
3) digestion–taking what we can
4) motility–move the stuff through
5) absorption–nutrients and fluid blending into body
6) elimination–leave the body
Pepsin
protein-digesting enzyme secreted in the stomach
Chyme
semiliquid substance formed in stomach from food and gastric juices mixing
Small Intestine
most digestion and absorption happens here
3 segments: duodenum, jejunum, ileum
Large Intestine (name sections)
cecum>ileocecal valve>ascending colon>hepatic flexure>transverse colon>splenic flexure>descending colon>sigmoid colon>colon>rectum>anal canal
Peristalsis moves food along
Liver and Gallbladder
Liver’s lobes divided into functional units called lobules made up of hepatocytes (secrete bile–focus on fats/lipids)
Gallbladder delivers bile
Liver is nutrient storage facility–converts glycogen into glucose
Filters and detoxifies blood
Liver’s roles: digestive, storage, metabolic
Pancreas
enzymes from pancreas are transported to the duodenum, where they are active in the chemical digestion of proteins, fats, and carbs
Rugae
folds in the inner-mucosal layer of the stomach to allow it to expand
Hydrochloric Acid
acid released in the stomach to begin the breakdown of proteins and destroy pathogens
Peristalsis
a series of wave-like contractions and relaxation in the smooth muscle layer, which propels food along the GI tract
Medullary Cavity
Cavity inside long bone.
Endosteum lines this ___. In adults it is filled with yellow bone marrow.
3 Portions of a Longbone
epiphysis–end of long bone, contains red bone marrow
metaphysics–neck of bone, where epiphyseal plate “growth plate”
diaphysis–main shaft
2 Types of Bone Tissue
Compact bone tissue aka cortical–made up of osteons
Spongey Bone aka cancellous
Osteogenic Cells
The only bone cell capable of mitosis (cell division)
genic= to produce
Osteocyte
Mature bone cell
cyte=cell
Osteoclasts
Bone Destroyers
clast=to break or destroy (think catastrophe)
Osteoblasts
Bone Builders
Blasts=germinate, bud, grow
Ossification
bone formation
Deposition
building up of new bone tissue