Lesson 29 Flashcards
a group of cells doing the same kind of work
tissue
tissue that allows your body to move
muscle tissue
tissue that carries messages between your brain and your body
nerve tissue
a group of tissues working together to do a job
organ
a group of organs working togheter to do a job
system
What are muscles and nerves made up of?
tissues
What are lungs, heart, stomach, and brain?
organs
The tongue, esophagus, stomach, intestines, and liver are a part of what?
digestive system
The prints made by the ridges on your fingertips are called?
fingerprints
Name four organs of the human body.
lungs, heart, stomach, brain
top layer of skin
epidermis
the second layer of skin
dermis
makes new skin cells
epidermis
where old, dead skin cells fall off
epidermis
What is the largest organ?
skin
Why did God give us skin?
for protection
What does the epidermis keep out?
germs
What does the epidermis keep in?
water
What is the coloring in the skin called?
melanin
Explain how cells, tissues, organs, and systems are related to each other.
Cells are the smallest living part of an organ. A group of cells doing the same kind of work is a tissue. A group of tissues working together to do a job i an organ. A group of organs working together is called a system.
What is a living thing called?
organism
What is the smallest living part of an organism?
cell
What is a tool used to see things that are very small?
microscope
What is a single-cell organism that looks like a blob of jelly and lives in water?
amoeba
