|Biceps and triceps are upper arm ____.
|Blood travels from your heart to your legs through ____.
|Human cells organize into ____ and then into organs.
|The reproduction of bacteria can be stopped by ____.
|Arteries, veins, and capillaries are blood ____.
|Your two ____ filter blood plasma by separating it from waste.
|Your trachea divides into two main ____ that lead to your lungs.
|Inhaled asbestos and tobacco smoke are nonradioactive ____.