3.
layer of skin that contains nerves, sweat glands
4.
fat layer to keep you warm
5.
protects body from harmful invaders
7.
coordinate the response to attack the infection
8.
glands that release hormones to control body activities
9.
chemical messengers that travel through the blood
13.
organ that regulates blood sugar
15.
filter blood and make urine
17.
releases urine from the body
18.
nerve cell that sends and receives messages
19.
anything that causes a response
20.
carry information from senses to the brain
21.
carry instructions from the brain to the muscles
22.
system responsible for breathing & exchanging gas
23.
two large tubes that branch into each lung
24.
tiny air sacs where gas exchange happens
26.
where bones meet together
27.
tissue connecting bones together
28.
attaches bone to muscle
29.
muscle that helps you move
30.
muscle that helps your organs function
31.
muscle that helps your heart pump blood
32.
moves blood, oxygen, and nutrients around the body
33.
organ that pumps blood
34.
carries oxygen, nutrients, and waste material
35.
carry blood away from the heart
36.
carry blood back to the heart
37.
tiny vessels where oxygen & nutrients are exchanged
