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Digestive/Excretory

QuestionAnswer
What is the function if the digestive system? To break down food and extract any usable nutrients along the way
How does the mouth begin mechanical digestion? The teeth and tongue break food into smaller pieces
How does the mouth begin chemical digestion? Saliva contains an enzyme called amylase to break down food
This is also called the food tube esophagus
What is peristalsis? Involuntary muscle contractions that move food
The stomach is what shape? J shaped
Why is mucus in the stomach? To protect it from the acid in your stomach
What are pepsin and rennin? Digestive enzymes found in the stomach
What organ makes bile? The liver
What does bile do? Helps to digest fats
Where is bile stored? The gallbladder
Where are most of the nutrients absorbed? In the small intestine
Which is longer: the small intestine or the large intestine? SMALL!
Which is bigger around:the small intestine or the large intestine? LARGE!
What is the name of the structures inside the intestine where all the absorption takes place? Villi
What happens in the large intestine? Excess water is absorbed
What is the function of the excretory system? To remove waste materials from the body
Why are lungs part of the excretory system? Because they function to remove carbon dioxide from the body which is a waste gas
Why is the skin part of the excretory system? Because it releases sweat which contains waste products
What do kidneys do? Filter the blood for waste
Where is urine held while waiting to be released ? bladder
What is a dialysis machine? It is a machine that is used when kidneys are not functioning properly. It filters the blood
What is the name of the acid in our stomachs? hydrochloric (HCl)
Created by: cwalczak