Sink The Fleet Quiz - Respiratory and Circulatory Systems

The Questions
The smallest blood vessels, the connect arteries to veins.
Blood vessels called carry oxygen-poor blood back to the heart.
A large flat muscle above the stomach, the helps expand the chest cavity.
Small sacs at the end of bronchioles, the allow gas exchange in the lungs.
The chamber that receives blood into the heart is the
Two branches called lead from the trachea to the lungs.
The pumping chambers of the heart are
Blood vessel that carries oxygen-rich blood away from the heart are
Tiny branches of the bronchi are called
Made of rings of cartilage, the is also called the windpipe.
A flap of tissue covering the opening of the trachea is the
The gas that makes up 20% of air, necessary for respiration is called

Rules of Engagement:
To win you need to sink the Fleet
The Fleet consists of one Battleship (3 cells), one Minesweeper (2 cells) and two Submarines (1 cell each).
Only Correct Answers win you a shot.
Fire a shot by clicking on the map below.
Aim carefully, there are more cells than questions!
Good Hunting !