Science 9

Created by

Chester Valderama

Cards (24)

Respiratory System 
Responsible for oxygen intake and expelling carbon dioxide
Parts of the human breathing system
Mouth
Nasal cavity
Pharynx (throat)
Larynx (voice box)
Trachea (windpipe)
Lungs
Bronchi
Bronchioles
Alveoli
Nasal cavity 
Responsible for making the air warm, damp, and clean
Inhalation 
1. Oxygen enters our body
2. Ribs move out and chest space increases
Exhalation 
1. Carbon dioxide exits our body
2. Ribs move in and chest space decreases
Inhalation 
Leads to gas exchange in the lungs
The Bronchi are the two branching tubes that connect the trachea to the lungs
The Bronchioles are the hair-like tubes that connect to the Alveoli
The Alveoli are the air sacs that allow gas exchange in the lungs
Diaphragm 
A muscle in the body
Diaphragm muscle contracts 
Moves down
Cardiovascular System (CS) 
The life support structure that nourishes your cells
Diaphragm relaxes 
Moves up
Diaphragm functions 
With other body systems to deliver different materials
Cardiovascular System 
Has 2 major parts
Heart - it pumps the blood throughout the body, the main organ of the CS
Blood vessels - carry the blood throughout the body
Types of blood vessels
Arteries - carry blood away from the heart
Veins - carry blood towards the heart
Capillaries - smallest blood vessels in the body
Blood 
Carries materials throughout the body
Heart 
A hollow muscle as big as your fist
Heart 
Has 4 chambers with specific tasks
Atria - receiving chambers accepting blood
Ventricles - pumping chambers
Valves 
One-way doors that keep the blood moving in one direction
Air enters 
1. Lungs
2. Left part of heart
3. Bloodstream
4. Cells
Heart pumps blood 
Transports essential nutrients, oxygen and other chemicals to every cell
Cells process the nutrients
1. Release energy
2. Give off carbon dioxide
Blood delivers carbon dioxide 
1. To the right portion of the heart
2. Pumped to the lungs
3. Exhaled