Show:
General
Digestive System
Circulatory System
Respiratory System
Excretory System
100
What do our bodies need to work?
Our bodies need energy to work.
100
What do plants and animals need in order to live and grow?
Nutrients.
100
What is blood made up of?
plasma, red blood cells, white blood cells and cell fragments called platelets.
100
Our cells need ________ to combine with nutrients and to produce energy.
Oxygen
100
What does the excretory system consist of?
The urinary system and the sweat glands.
200
What does the excretory system do?
It eliminates waste products from our body.
200
What triggers the production of saliva in our mouths?
The sense of smell triggers the production of saliva in our mouths.
200
What do veins do?
They carry the blood back to the heart.
200
The trachea divides into two tubes that are called what?
Bronchi
200
What does the urinary system do?
It gets rid of waste from the blood.
300
What does the circulatory system do?
It delivers blood to the body´s tissues through a network of blood vessels.
300
What does the epiglottis do?
It prevents food from going down the windpipe and into the lungs.
300
What do red blood cells give blood? What do they do?
They give blood it´s color and they carry oxygen and carbon dioxide.
300
At the end of each bronchiole is a cluster of tiny air sacked called?
Alveoli
300
The renal arteries carry _________ to the kidneys.
Blood.
400
What do we use the respiratory system for?
We use it to obtain oxygen and get rid of carbon dioxide.
400
What is the stomach's role?
The stomach's role is to break down food.
400
What is the heart and what does it do?
The heart is a muscle that pumps blood through the body.
400
What does the diaphragm do?
When we take a breath, it contracts and flattens to allow the lungs to inflate.
400
What do the kidneys do?
They eliminate water and waste products.
500
What is the digestive system?
It´s a group of organs in the body that extract nutrients from food and expel undigested waste.
500
Once food is dissolved into a liquid and passes down into the small intestine, what is the food mixture broken down into?
Proteins, carbohydrates, vitamins, minerals and fats.
500
Blood flows from the heart to the lungs and back to the heart again during:
a) systematic circulation b) pulmonary circulation
500
What are the alveoli covered in?
A network of capillaries.
500
What does sweat consist of? (or made up of)
It´s made up of a mixture of water and minerals.