Chapter 2- Humans As Organisms Flashcards
What does the the nervous system do
It uses messages from the sensory organs and sends messages to the muscles To coordinate the activities of the body
What does the digestive system doing
It breaks down food so that The energy and materials it contains can be used by the body
What does the respiratory system do
It takes in oxygen from the air and releases carbon dioxide
What does the Excretory system do
It removes poisonous liquid wastes
What perpose does the skeleton have
Protect organs, support the body, allows movement
What do ligaments do
they hold bones together
What does cartilage do
It protects the ends of bones from wear
What does Synovial fluid do
Reduces friction as the bones move
What do Antagonistic muscles do
It contracts when it moves, and a muscle cannot make it self longer again it needs another muscle to put in back to its original length, This is called an antagonistic muscle pair
Give an example of an Antagonistic muscle pair
The biceps and triceps
What does protein do? Example of protein
Growth and repair of body tissues, meat beans lentils milk and cheese
What do fats do, give an example of a fat
Provide energy that is stored in the body, cheese, butter, peanuts
What do carbohydrates do, example of a carbohydrate
Provide the body body with energy that can be used quickly, Bread rice pasta
What vitamins do, give example of vitamin
They keep the body healthy, fruit and vegetables, vitamin C from oranges,Vitamin B 12 from meat
What do minerals do, give an example of a mineral
They keep the body healthy, iron, calcium, they found in fruit and vegetables
Your body needs water because
All chemical reactions of life processes in the cells take place in water
Why does your body need fiber
Fiber Kidz Bop to Foood so that it can be push lawn more easily inside your body and make digestion more Efficient
What happens when you have a lack of vitamin a, prevention foods?
Night blindness you cannot see in the dark to prevent this you need to eat milk, liver, carrot
What happens when you’re lacking vitamin B,prevention ?
Do you get Beriberi, to prevent you should eat bread, milk, brown rice, and soya bean
What happens when you have a lack of vitamin C, prevention?
You get scurvy, you should eat black currant, orange, lemon, guava
What happens when you’re lacking vitamin D, prevention?
You get rickets prevention egg yolk, butter
What happens when you lack iron, prevention?
You get anemia, prevention meat, eggs, lentils
Define a balanced diet
All nutrients are present in the correct amounts to keep your body healthy
How is Foood broken down physically?
Foood is physically broken down by the action of your teeth and enzymes
How is food broken down chemically
Food is broken down chemically by the action of enzymes they act as catalysts and speed up the breakdown of large molecules in food into smaller ones which can then be absorbed by the body
Food group, Protien what are the smaller molecules produced
Amino acids
