1) to break food into small nutrients
2) to absorb nutrients into the body
3) to eliminate solid wastes
2) to absorb nutrients into the body
3) to eliminate solid wastes
What are the 3 functions of the digestive system?
Teeth rips food into small pieces, stomach churns and breaks food apart
What is mechanical
digestion?
digestion?
Enzymes (saliva, bile, gastric acid pancreatic juice) dissolve food into small nutrients
What is chemical digestion?
In the mouth
Where does digestion begin?
In the small intestine
Where does most chemical
digestion occur?
digestion occur?
Through villi in the small intestine
Where does all absorption
of nutrients occur?
of nutrients occur?
In the large intestine
Where is water reabsorbed
into the body?
into the body?
Makes bile
What does the liver do?
Stores bile
What does the gall bladder
do?
do?
The squeezing of food through the
esophagus, stomach, small intestine, and large intestine
esophagus, stomach, small intestine, and large intestine
What is peristalsis?
The esophagus
What is the food tube
called?
called?
In the rectum
Where do solid wastes get
stored?
stored?
The anus
What is the opening at the
end of the digestive tract?
end of the digestive tract?
Orange iodine changes to blue-black
Which indicator is used to
test for starch?
test for starch?
Benedict’s blue solution changes to orange or red when heated
Which indicator is used to
test for sugar?
test for sugar?
Rub food on a brown bag to see if a grease spot is seen
How do you test for fats?
Carbohydrates, proteins, vitamins, minerals, water, fats
What are the six food
nutrients?
nutrients?
Glucose (the simplest sugar)
Into what nutrient are
carbohydrates broken?
carbohydrates broken?
Amino acids
Into what nutrient are
proteins broken?
proteins broken?
Fatty acids and glycerol
Into what nutrients are fats
broken?
broken?
1) to take oxygen and nutrients to the body
2) to remove wastes from the body cells
3) to carry white blood cells to fight disease
2) to remove wastes from the body cells
3) to carry white blood cells to fight disease
What are the 3 functions of the circulatory system?
The heart
What pumps blood
through the body?
through the body?
The arteries
What blood vessel carries
blood away from the
heart?
blood away from the
heart?
The veins
What blood vessel carries
blood back to the heart?
blood back to the heart?
The capillaries
What blood vessel is the
site of diffusion of oxygen
and carbon dioxide?
site of diffusion of oxygen
and carbon dioxide?
1) white blood cells fight disease
2) red blood cells carry oxygen
3) platelets clot blood
4) plasma is the liquid part that carries
nutrients
2) red blood cells carry oxygen
3) platelets clot blood
4) plasma is the liquid part that carries
nutrients
What are the four parts of
the blood?
the blood?
1) to bring oxygen into the body
2) to remove carbon dioxide from the body
3) to make sounds
2) to remove carbon dioxide from the body
3) to make sounds
What are the 3 functions of the respiratory system?
The trachea
What is the windpipe?
The diaphragm
Which muscle controls
inhaling and exhaling?
inhaling and exhaling?
The epiglottis
What prevents you from
choking while you are
eating?
choking while you are
eating?
The diaphragm contracts downward
Describe the action of the diaphragm when inhaling.
The diaphragm relaxes upward
Describe the action of the
diaphragm when exhaling.
diaphragm when exhaling.
The nose
What filters, moistens, and
warms the air that enters
your body?
warms the air that enters
your body?
In the alveoli
Where does the exchange
of oxygen and carbon
dioxide occur in the lung?
of oxygen and carbon
dioxide occur in the lung?
It has cartilage rings
What prevents your
trachea from collapsing?
trachea from collapsing?
To collect and remove wastes from the body
What is the function of the
excretory system?
excretory system?
The lungs remove carbon dioxide
Which excretory organ is
also part of the respiratory
system?
also part of the respiratory
system?
The liver removes old red blood cells and turns them into bile
Which excretory organ is
also part of the digestive
system?
also part of the digestive
system?
The kidney removes excess water, salt, and urea and makes urine
Which excretory organ is
also part of the urinary
system?
also part of the urinary
system?
The skin removes excess water, salt, and urea and makes sweat.
Which organ is the largest
excretory organ?
excretory organ?
