Organisms Flashcards
What do a group of cells make
A tissue
What do a group of tissues make
An organ
What does a group of organs make
An organ system
What does a group of organ systems make
An organism
Where does gas exchange take place
The alveolus which are in the lungs
Where does oxygen enter the body
Through the mouth and nose
What does exhaled air contain
Carbon dioxide and water vapor with not as much oxygen
What happens to your body when you inhale
Muscles between your ribs and diaphragm contract
What happens when you exhale
Muscles between your ribs and diaphragm contract
What are the four important functions of the skeleton
Support, protection of organs, movement and making of blood
What does bone marrow make
White and red blood cells
What does cartilage do
Stops the bones rubbing against each other
What do ligaments do
Holds bones to bones
What to tendons do
Attached muscles to bones
What are antagonistic muscles
A pair of muscles that when one contracts the other relaxes
