Science - Digestive System Flashcards
What are the functions of the digestive system
Movement, Secretion, Digestion, Absorption
what does MOVEMENT do
mixes/passes nutrients…. it REMOVES WASTE
what does SECRETION do
releases ENZYMES and HORMONES
What does DIGESTION do
CHEMICAL breakdwon of nutrients
what does ABSORPTION do
passage of nutrients through the PLASMA MEMBRANE into BLOOD/LYMPH
what is the function of the stomach
Mix/store food // dissolve food by secretions // control passage of food into small intestine
what is the pneumonic to remember the functions of the stomach
Dont Stop Controlling My Store: Dissolve, Secretions, Control, Mix, Store
where does protein digestion occur?
STOMACH
what does peristalsis do
contract and relaxing, allows movement
where does absorption begin
small intestine
what is the largest solid organ in the body
Liver
what is the largest gland in the body
liver
where is the liver located in the body
RLQ: Right Lower Quadrant
how many lobes are their in the liver
4
what are the lobes of the liver
Right, Left, Quadrate, Caudate
Where does blood enter the liver
Hepatic Portal // Hepatic Artery
Hepatic Portal Veins
nutrient rich blood brought to liver
hepatic artery
OXYGEN RICH blodd brought to liver
hepatic vein
blood leaving liver
what are lobules
functional units of kidney
what are the functions of the liver
bile production, produce blood plasma proteins, produce cholestoral, store glucose, regulate amino acids, process hemoglobin –> store iron, convert ammonia –> urea, purify blood, regulate clotting, control infections
What is the pneumonic to remember the functions of the liver
I Got Pretty Playing Paladins As yoU Could Believe
What is the function of the pancreas (digestive)
secrete enzymes to help digest FATS and PROTEINS
how do enzymes in the pancrease start off as
start off as zymogens
what do zymogens do
convert lipase and amylase
when do lipase and amylase get converted
ONLY when they hit the Small intestine
what is the function of sodium bicarbonate in the stomach
help with stomach acid
where is sodium bicarbonate secreted
pancreas
What controls EXOCRINE functions
stomach
where are MOST nutrients absorbed
small intestine
what locations of gastroinestinal system bring enzymes to small intestine
pancrease, liver, stomach
what is chyme
semi-liquid mass of partially digested food
what is the main ABSORPTION organ of the digestive tract
small intestine
what does microvilli do
helps with absorption, movement of food
what type of cells are microvilli
epithelial cells
what is the function of the large intestine
concentrate, mix, store waste
what happens when the rectal wall is distended
nervous system triggers impulse in body –> anus moves waste
