These are tiny air sacs surrounded by capillaries.
Alveoli
These are two spongy organs that contain bronchioles and alveoli,
LUNGS
Here the "bolus" is mixed with digestive juices and broken down some more.
Stomach
This is a tube which connects the mouth with the stomach
Oesophagus
What is the function of the circulatory system?
Transport nutrients, oxygen and waste substances.
This organ pumps blood. It has 4 hollow chambers. When it contracts it pushes blood, and when it relaxes it allows blood to enter.
HEART
What systems are involved in nutrition?
The respiratory system, the digestive system, the circulatory system and the excretory system.
Here the minerals are absorbed and faeces are formed.
Large intestine
Here the nutrients are absorbed.
Small intestine.
These two organs produce digestive juices.
Pancreas and liver.
This is where urine is stored.
BLADDER
Describe the process of inhalation.
The diaphragm contracts, the lungs expand and air enters.
The diaphragm relaxes, the lungs expand and air enters.
Describe the route of air during inhalation.
1º Nasal cavity 2º Trachea 3º Bronchi 4º Lungs 5º Bronchiole 6º Alveoli
Here food is broken down by our teeth and mixed with saliva.
Mouth
Describe the process of exhalation.
The diaphragm contracts, the lungs contract pushing air out
The diaphragm relaxes, thelungs contract and push air out.
Describe the route of food in our body.
1º Mouth 2º oesophagus 3º Stomach 4º Small intestine 5º large intestine 6º anus
Where can our blood be cleaned?
In the kidneys and in the sweat glands.
Where does the exchange of gases take place?
Alveoli
Bronchi
Bronchiole
Windpipe
What are the functions of the sweat glands
Regulate our body temperature and expel waste.
Expel waste.
Regulate our body temperature.
The trachea belongs to ...
Digestive system
Respiratory system
Classify the following into their nutrient group: chicken, banana, milk, eggs, lentils, olive oil, and pasta.
protein, vitamins, proteins, proteins, carbs, fats, and carbs