Immune System and Digestive System Quiz Flashcards
your digestive system is made up of ___________
a series of organs that work together to perform the function of digestion
to live your body needs nutrients…
the digestive system breaks down the things you eat into nutrients
- vitamins
- minerals
- carbohydrates
- proteins
- lipids
vitamins
help enzymes function
minerals
- nonorganic molecules
- calcium and magnesium for skeletal function
carbohydrates
so you can undergo cellular respiration
proteins
for growth, building muscle cells, making enzymes, makes up part of the cell membrane
lipids
for cell membrane, body heat/homeostasis, energy
mechanical digestion
- using some kind of physical force
- for example, teeth breaking down food, or stomach making a churning motion
- puts food into a smaller form which allows chemical digestion to be more effective
chemical digestion
- digestion involving enzymes (which are protein molecules)
- allows you to break things down
absorption
transporting nutrients from your digestive system into the blood
propulsion
helps the organ move the food along to the next organ. Most of this occurs with smooth muscle under voluntary control
mouth:
-food is ingested here
-mechanical and chemical digestion
-mechanical w/ your teeth and tongue
-chemical w/ amylase an enzyme in your saliva that
begins to break down carbohydrates
-no absorption
-propulsion when you swallow
pharynx
- a small space in the back of the mouth
- respiratory and digestive system meet
- bolus needs to go to the esophagus, not the respiratory tract
- the body prevents this from happening with the epiglottis, a flap of muscular tissue that closes the respiratory passage when you swallow
- no digestion
- no absorption
- no propulsion
esophagus
- leads the bolus from the pharynx down to the stomach
- no digestion
- no absorption
- propulsion does occur
- peristalsis
- one part realizes as the other part contracts, squeezing the bolus and pushing it farther and farther towards the stomach
- peristalsis