Arrow a should point to muscle tissue, arrow B should point to an organ, arrow c should point to organ system.
As both fill with liquid they expand. They are also both rounded shapes
<span>D: Viruses
I hope helped ^-^</span>
The function of muscular system is to move our body, so if I had no muscle in my fingers I wouldn't have been able to type this answer.
For muscle tissue there are three types of tissues: skeletal, cardiac, and smooth muscle. They provide posture and body support, locomotion, and heat production.
Hope you understand what I said