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