click below
click below
Normal Size Small Size show me how
Body Systems Part 1
7th grade Test: 2/22/13
Question | Answer |
---|---|
Our bodies are made up of trillions of ____. | cells |
cells form what? | tissues |
tissues form what? | organs |
Organs form what? | systems? |
Organ systems form what? | an organism |
Veins? | They carry blood from our body parts back to the heart. |
Arteries? | These carry blood away from the heart to our body parts. |
3 layers of skin? | epidermis, dermis, hypodermis |
5 Jobs of skin? | protect body from bacteria and viruses, regulates body temperature,keeps insides from drying out, protects us from the harmful UV rays of sun, helps us learn about the world using the sensory receptors |
Melanin? | gives skin color and protect us from harmful uv rays |
whats found in the epidermis? | New Skin Cells, Dead Skin Cells, melanin, |
Whats found in the dermis? | blood vessels, oil glands sweat glands, nerve endings, |
What's found in the hypo-dermis? | Fat |
What's another name for compact bone? | Hard Bone |
What covers the outside of the bone? | Periosteum |
What is the part of the bone with holes in it? | Spongy bone |
what happens in the bone marrow? | Blood cells are produced |
4 functions of the skeletal system? | Protect your internal organs, gives body shape, Produce blood cells, stores calcium and other minerals |
what is it called where 2 bones meet? | joint |
Ball and Socket...L and M? | shoulder and hips, circular |
Hinge Lm? | elbows, knees, fingers, toes, jaw |
gliding? | wrists ankles bones slide over other bones |
pivot | neck bones move on an axis |
fixed | skull no particular movement |
ligament? | connects bone to bone |
Tendon | connects muscle to bone |
what covers the end of the bone? | CARTILAGE |
see bones(most Known) | see bones(most Known) |
Muscles always work in ________. | pairs |
when 1 muscle _________ , the other muscle must __________. | contracts, Relax |
when a muscle contracts it gets | shorter |
When a muscle relaxes it gets | longer |
What would happen if both muscles contracted at the same time? | iT Wouldnt move |
cardiac | heart inv. |
skelatal | on every bone in the body vol. |
smooth | digestive system,iris, blood vessels |
volontary | you can control |
involontary | you cant control |