nerve cells
What are the three main parts. of a nerve cell?
Cell body, dendrites (which receives messages) and the axon (which sends messages)
What are the main three types of muscle cells
Skeletal, cardiac and smooth.
Where are epithelial cells found?
Outside your body or inside your organs.
what are the two types of blood cells?
Red and White
What are the main two types of germs?
Viruses and bacteria.
How do nerve cells send messages to each other
by mixing electricity and chemicals
Why do muscle cells look striped?
Protein fibers.
Why do epithelial cells heal so quickly?
they multiply rapidly.
What do white blood cels do?
Kill germs.
How can you fight germs?
Vaccines and antibiotics if your body does not do it on its own.
What happens to your body if a nerve cell gets damaged?
You get weak and numb
How do muscle cells create movement?
Contracting and relaxing.
What is their job?
protection, keep germs out.
How do white blood cells kill germs?
Surrounding them, swallowing them and dissolving them.
What does bacteria do once it's in your body?
Multiply and spread throughout the host
Which nerve cell helps you feel hot things
sensory neurons
Are all muscle movements things we control?
No.
Why are some flat and some tall
Flat ones are to let oxygen through and tall ones protect organs
What do they carry to your lungs to help you breathe out?
Carbon Dioxide
Who discovered germs?
Anton van leeuenhoek.
What is the "insulation" of a nerve cell
Myelin sheath
What gives muscle cells the energy to move
Mitochondria
What protects them from the sun?
Melanin.
What are red blood cells made of?
A protein called hemoglobin.
How many bacteria are there on earth?
5 nonillion.