Share Natural Science - Exam 6th Grade
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The human ______ system is a group of organs that extract nutrients from food and eliminate waste products.
Respiratory
Digestive
It is a liquid that is produce by salivary glands that makes food easier to chew and swallow.
Saliva
Water
Bolus
It is the large flat muscle under the lungs.
Diaphram
Chest
Bronchi
Trachea
When a bolus of food reaches the stomach, it combines with _____ juices that break down the food and kill dangerous bacteria.
Gastric
Chyme
Pancreatic
Bile
It is a flap of cartilage that keeps food out of the lungs.
Trachea
Chyme
Bolus
Epiglottis
How long can food take to pass through the system?
24 - 72 hours
12 - 24 hours
9 - 12 hours
48 - 72 hours
What happens when fresh air reaches the alveoli?
There is a gas exchange
There are tiny air sacs called alveoli
We eliminate gas when we breathe
There is a blood exchange
Each bronchus divides into smaller and smaller ...
Bronchuses
Branches
Bronchioles
Bronchi
In what order does carbon dioxide leave our body?
Alveoli - bronchioles - bronchi - trachea - mouth and nose
Alveoli - bronchi - bronchioles - trachea - mouth and nose
We exhale through our mouth and nose
Bronchi - capillaries - trachea - mouth and nose
Where does the digestive process start?
Large Intestine
Mouth
Oesophagus
Stomach
At the end of each bronchiole, there are tiny air sacs called______
Alveoli
Capillaries
Trachea
Bronchi
The Respiratory system releases a waste product/gas called ____
Carbon Dioxide
Gas exchange
Oxygen
Exhale
In the Respiratory System, what is combined with other nutrients to produce energy for our bodies?
Food
Water
Oxygen
Carbon Dioxide
Food waste that the body does not need passes into the ____ , where extra water is absorbed back into the body
Small intestine
Rectum
Large intestine
Liver
The muscular walls of the stomach contract and relax, mixing the food and gastric juices to form a thick liquid called___
Gastric juices
Pancreatic juices
Chyme
Bile
