Structure & Function
What is the function of skin?
The skin protects the body and keeps harmful things out.
What is a cell?
A cell is the smallest living unit of life.
Name one body system.
Muscles, Bones, Blood, Nerves, Skin
What is a growth plate?
A growth plate is a soft area near the ends of bones where growth happens.
What are two traits of living things?
Need food, Can grow, Can make more of themselves
What is one way muscle structure helps it move bone?
Muscles have long fibers that pull on bones to make them move.
What are two things cells need to grow and divide?
Cells need food (nutrients) and water to grow and divide.
Which body system carries messages to the brain?
Nerves
What fills the growth plate over time?
Bone cells fill in the growth plate as the bone grows.
How do we know a plant is alive?
We know a plant is alive because it grows and needs sunlight and water.
What kind of cells make up bone tissue?
Bone tissue is made up of bone cells, which are strong and hard.
What happens when cells divide?
Cells grow, then split to make two new cells.
What body system helps move nutrients, water, and oxygen around your body?
Blood
Which two body systems help fill the growth plate?
Blood and Bone. The blood Brings nutrients and water and the bone creates new cells to close the gap.
What tool can you use to check if something is made of cells?
A microscope
How does the shape of a nerve cell help it do its job?
Nerve cells have long branches that carry messages quickly across the body.
What kind of cells fill in a cut as it heals?
New skin, muscle, or bone cells are made to replace the damaged ones.
How do the systems work together to heal an injury?
They work together to send signals, bring nutrients, and rebuild tissues.
What happens at the cellular level to make the gap smaller?
Cells divide and make more cells to fill in the space.
Why are bacteria considered living things?
They grow, eat, and make more of themselves.
How do the structures of skin, muscle, and bone support healing in the body?
Skin covers and protects, muscles move bones, and bones support your body's structure.
How is the way the growth plate fills in similar to how a wound heals?
Both processes fill in gaps with new cells to grow or heal the tissue.
Explain how nerves and blood help the body heal.
Nerves send signals about the injury, and blood brings nutrients and cells for healing.
How does the structure of bone change as a child grows into an adult?
The bone becomes solid as more bone cells are added to the growth plate.
How is a single-celled organism like a human body cell?
They both can grow, use energy, and divide to make new cells.