Digestive System
What is the main purpose of the digestive system?
To break nutrients into parts small enough for the body to absorb and use for energy (growth and cell repair).
What is the main function of the respiratory system?
Breathing + gives the body oxygen and gets rid of carbon dioxide (waste).
What are the main functions of the circulatory system?
To send oxygen and nutrients to all parts of the body through the bloodstream. Also, it helps the body to get rid of waste (carbon dioxide)
Nutrients come from the ______ system. Oxygen comes from the ______ system.
1. Digestive
2. Respiratory
What is one way to keep the circulatory system healthy?
- eat healthy
- exercise
- reduce stress
- refrain from smoking
In order of their placement, what are the 5 main parts of the digestive system? (excluding the accessory organs)
Mouth, Esophagus, Stomach, Small Intestine, and Large Intestine.
What are four main parts of the respiratory system?
Mouth, Nose, Pharynx, Trachea, Lungs, Bronchi, Bronchioles, Alveoli, Diaphragm
What are the three main parts of the cardiovascular system?
Heart, blood, blood vessels.
Which system does the respiratory work with to transport oxygen to all parts of the body?
The circulatory system.
How can you keep your respiratory system healthy?
- avoid inhaling smoke, dust, chemicals, pollution
- personal hygiene
- exercise
Which part of the digestive system absorbs nutrients from food?
the small intestine.
What is the name of the waste product that respiratory system removes?
Carbon dioxide.
1. Carries oxygen rich blood away from the heart to all parts of the body?
2. Carries oxygen poor blood from the body back to the heart?
1. Arteries
2. Veins
At what stage in digestion/after which part, does the digestive system meet the circulatory system?
After nutrients are absorbed by the small intestine, nutrients enter the blood stream to be carried to cells.
What is 1 behaviour that would be harmful to a healthy, functioning digestive system?
- not drinking enough water
- not eating fibre
- eat way too much (upset stomach)
- not chewing food
- eating too quickly
This substance is inside the stomach and helps to break down food/separate the nutrients inside of food.
Stomach/Gastric juices
Stomach acid
Hydrochloric acid
The diaphragm contracts/moves down to create more space for the lungs to expand and pull in air.
What happens after blood enters the heart?
The blood is pumped from the right ventricle into the lungs to pick up oxygen,
What moves waste, nutrients, and oxygen? Name the part(s).
Blood and blood vessels.
Constipation affects which organ system?
Digestive system.
Name 3 kinds of nutrients
carbohydrates
proteins
fats/lipids
vitamins
minerals
fibre
water
After we breathe in oxygen to our lungs, where does the oxygen go before it is sent to all parts of the body?
The heart.
The number of times the heart beats per minute.
The body system that works with the digestive system to help transport nutrients all throughout the body.
The circulatory system.
Name 2 ways to keep the digestive system healthy.
- Eat a healthy diet (fibre, whole grains, low sugar)
- Exercise
- Chew food completely
- Drink water
- refrain from smoking