Group of cells with the same job.
A. Tissues
B. Organs
A. Tissues
The respiratory system contains the organs you use to ______________.
breathe
The ____________ ____________ moves nutrients, waste, and gas through the body.
circulatory system
Tissues that share the same job form ___________.
organs
When you inhale, air enters the body through the ______________.
A. lungs
B. air sacs
C. nose
C. nose
The _______________ pumps blood to all parts of the body.
heart
Organs join together to form ____________ _____________.
A. muscular system
B. organ system
C. skeletal system
B. organ system
The ______________ carries air to the lungs.
A. windpipe
B. nose
C. air sacs
A. windpipe
________________ carry blood toward the heart.
A. Veins
B. Arteries
C. Capillaries
A. Veins
The _____________ ______________ gives the body the ability to move.
A. muscular system
B. skeletal system
A. muscular system
In the _____________, the air fills millions of tiny air sacs.
A. nose
B. lungs
C. windpipe
B. lungs
______________ carry blood away from the heart.
A. Veins
B. Arteries
C. Capillaries
B. Arteries
The ____________ _____________ supports the body and protects the organs inside the body.
A. muscular system
B. skeletal system
B. skeletal system
Oxygen moves from the ________ _________ into the blood.
air sacs
Tiny blood vessels that connect arteries and veins are called _____________________.
capillaries