Mouth
In the mechanical digestion what are the two purposes for teeth?
Teeth cut and tear food
What muscular tube that connects your mouth to your stomach
Esophagus
Food temporarily kept here until solid has been broken down into liquid form, which is around 2-6 hrs
Can stretch to hold 2L of food/fluid
Mucus secreted by stomach cells protects lining from _____ and _______ damage
acid and mechanical
What causes heart burn?
stomach acid flowing back into the esophagus
What is part of the Chemical Digestion
Saliva
The esophagus is lined with _______ to make food easier to ____________
Lined with mucus to make your food easier to swallow
The stomach has layers of _________
muscle
Food, now a soupy liquid called _____, is ready to be released into the next stage of system
chyme
What is heartburn?
Burning pain and or discomfort in the upper chest and midchest, possibly involving neck and throat
What does the enzyme (Amylase) break down?
It breaks down starch (Complex Sugars)
How long does food stays in your stomach?
approx . 10 seconds
In mechanical digestion the muscles ________ to make a churning motion that mixes food.
contract
How does heartburn worsen?
Can worsen when laying down
What is the purpose of Saliva?
Saliva moistens food
Describe the three parts of the Epiglottis?
Flap of ________ (end of nose or ear) seals off your windpipe
Closes trachea (windpipe) when _________
Food Travels down the _______
Explain the Chemical Digestion
What is HCI
Turning food mixes with gastric juice
HCI-very strong Acid (Strong enough to dissolve iron nails) kills bacteria and further dissolves food, necessary to activate pepsin (Enzyme that helps dissolve proteins)
_______ is series of involuntary wave
Peristalsis wave (Muscle contractions that move food along)
About every __ seconds stomach contents are mixed by churning, when an empty stomach churns you feel hunger pangs
20