Help to prepare for LS3 test
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
What are the levels of organization in the human body?
What is structure?
How something is put together, what parts it has
What is function?
Its purpose, what it does
If cells have a similar structure and function, they are called...
Systems are made of...
Organs are made of...
Tissues are made of...
Respiratory rate means...
the number of breaths per minute
When exercising, will your respiratory rate be higher or lower?
What is the function of the diaphragm?
It contracts and causes the pressure to change in your chest when you are breathing
What does the circulatory system do?
It moves oxygen, waste, and nutrients through the body
What does the digestive system do?
It breaks down food for energy
What does the stomach do?
churns food into smaller pieces, has enzymes to digest food
What digestive system organ absorbs nutrients?
What does a defensive barrier do?
blocks germs from getting inside your body
What are examples of defensive barriers?
mucus, skin, nose hairs
What types of defenses fight germs in your body?
T-cells, B-cells, antibodies
What does the lymphatic system do?
produces antibodies and white blood cells
Why does a vaccine work?
it causes the immune system to get ready for future attack.
What happens to lymph nodes when we get sick?
they become larger
What is a vaccine/vaccination?
a dead or weak microbe injected into the body to help our immune systems fight disease