Organ systems in humans Flashcards
How organs systems work
cells become specialized
they make tissues
tissues make organs
organs create systems
main components of the digestive system
- Gastrointestinal track
- pancreas, gallblader, liver
- Enzymes/hormones/nerves/blood
- mesentery (large tissue that supports and positions all digestive organs in the abdomen)
- DIGESTION EXPLAIN
- teath breakdown the food
- the enzymes break down food chemicaly (amalyse)
- passes trhoiug pharynx (throat) and goes to esophagus
- esoughpagus pushes food down to stomach
peristalsis?
involuntary muscel contractions that pushes down the bolus of food down the esophagus
stomache role
has mucas outer layer - to protect from acidic juices
gastric juices that break down the food and turn it into chyme
sphinctor?
the opening in teh stomache that lets in the chyme into the small intestine
how liver, pancreas, and gallbladder work
the liver produces bile and sends it into the gallbladder for it to be stored
the gallblader then sends it to the duodenum where the food gets further broken down
the pancreas enzymes also break down the food and transfer teh protien into amino acids
small intestine
the chyme gets absorbed by villi’s in the lining
Large intestine
absorbs the remaining water, vitamins, salts and eliminates undigested food
The Excretory System
eliminates waste from body
4 chambers of heart
right ventricle, right atrium, left ventricle, left atrium
valves
opening flaps that let blood go from the atrium to the ventricles on both sides
parts of the heart
inferior, superior vena cava, valves, aorta, left ventricles, right ventricle, right atrium, left atrium
artieries vs viens
arteries always carry oxygenated blood
(pulminary artery is only expeption)
viens always carry deoxygenated blood
(pulminary vien only exeption)
capilaries
connects arteries and veins
blood fliters
