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45 Cards in this Set

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When does digestion start?
as soon as you bite into food
What is saliva?
the liquid in the mouth that makes chewed food wet and begins digestion
What is the atrium?
one of two spaces in top part of the heart that recieves blood from veins
How does a blood clot form?
platelets, fibers, and trapped blood cells clump together to form a clot. The clot seals the break in the blood vessel.
What is digestion?
the changing of food into forms that the body can use
What do veins do?
the kind of blood vesels that carries blood back to the heart
What are platelets?
tiny part of a cell that help stop bleeding
How does the body get nutrients from food?
Through the digestive system
What is the ventricle
onen of the two spaces int he bottom part of the heart that pump blood out of the heart
What is pus?
white blood cells that have died and form a thick, yellowish liquid
How does a clot prevent germs from entering into a wound?
It hardens and forms a scab
What does the enzyme change starches into?
sugars
What do arteries do?
the kind of blood vessel that carries blood away from the heart
What is your heart?
a hollow, muscular organ that pumps blood
What are nutrients?
a substance in food that the body uses for energy, for growth and repair, or for working well
What do capillaries do?
a tiny blood vessel with thin walls through which oxygen, nutrients, and wastes pass
What is an enzyme?
a chemical that helps your digestive system change food into nutrients
What are the three types of blood vessels found in the circulatory system?
veins, arteries, and capillaries
What 3 important things do cells do with the nutrients they get?
1. give you the energy you need to work and play
2. help you grow by making new cells
3. makes repairs
How many spaces is the heart divided into?
four
What three important things do cells do with the nutrients they get?
1. gives you the energy you need to work and play

2. help you grow by making new cells

3. makes repairs such as mending broken bones
How does your body get nutrients from food?
digestion (digestive system)
digestion
the changing of food into forms that the body can use
When does digestion start?
as soon as you bite into food
saliva
the liquid in the mouth that makes chewed food wet and begins digestion
enzyme
a chemical that helps your digestive system change food into nutrients
What does the enzyme change starch into?
sugar
esophagus
the tube that carries food and liquids from the mouth to the stomach
What are the 5 parts of the the digestive system?
mouth, esophagus, stomach, small intestines, and large intestines
How does the mouth help in digestion?
It tears, cuts, and grinds the food inthe mouth.
What does the esophagus do?
contracts and relaxes to push swallowed food down toward the stomach
What is the funtion of the stomach?
muscles squeeze and mix food with digestive juices made in the stomach's lining
What do the small intestines do/
It produces juices that mix with food and change the food into mutrients that the body can use
What do the large intestines do?
It removes much of the liquid and stores the remaining solid waste until it leaves the body
What kind of changes take place when you eat?
both physical changes and chemical changes take place
What are saliva glands?
glands that produce saliva in your mouth
Where are your saliva glands located?
in the front of the ear, under the lower jaws, and under the tongue
How does saliva get from your glands to your mouth?
tiny tubes
How long is an adult's esophagus?
25 cm/ 10 inches
What is the stomach?
a baglike organ with muscular walls
How long does food stay in the stomach?
2 to 4 hours
How do cells get nutrients?
through the blood
What is an example of food that can not be digested?
skins and seeds of fruits and vegetables
How long can solid waste stay in the large intestines?
10 hours to a day
nutrients
a substance in food that the body uses for energy, for growth and repair, or for working well