help.. One of the main jobs of the excretory system is to remove carbon
dioxide from the body.
a. true
b. false
17 Answer:
The trachea is protected by rings of cartilage.
a. true
b. false
18 Answer:
The bronchus is also called the windpipe.
a. true
b. false
19 Answer:
Urine passes out of the body through a tube called the ureter.
a. true
b. false
20 Answer:
The diaphragm is a dome-shaped muscle that aids in breathing.
a. true
b. false
