Human Body and Physical Activity
Across
- 2. each muscle fibre consists of a mass of protoplasm
- 3. a system that is a network of glands and organs, which produce and release hormones
- 6. blood consists of a liquid intracellular substance
- 8. process of interchange of O2 and CO2 between the organism and the environment
Down
- 1. a system responsible for eliminating waste from the body
- 2. fibre or cell is covered by a thin membrane
- 4. muscles responsible for the movement of the body and is in our control
- 5. muscles make up the mass of the heart and are responsible for the rhythmic contractions and are also not in our control control
- 7. carries oxygen and nutrients to the different parts of our body
- 9. muscles found in the walls of blood vessels, intestines, and stomach, and are not under our control