Body systems

2. also known as the windpipe it conveys air to and from the lungs.
4. blood vessels that carry blood towards the heart.
7. a condition where muscles waist away.
8. blood vessels that carry blood away from the heart.
9. the colorless fluid part of blood.
14. a specialized cell transmitting nerve impulses
15. the hardest working muscle.
16. the strongest muscle in the body.
18. an action that is preformed as a response to a stimulus and without conscious though

1. an organ of soft nervous tissue contained in the skull that functions as the center of intellectual and nervous activity
3. the largest bone in the body.
5. also know as the chest it’s the part of the body between the neck and the abdomen containing the chief organs of circulation and respiration
6. the smallest and lightest bone in the body.
7. a respiratory condition marked by spasms in the bronchi of the lungs, causing difficulty in breathing
10. a soft fatty substance in the cavities of bones.
11. waves of changing blood pressure that tells you how quickly your heart is beating.
12. the pair of spongy, air-filled organs located on either side of the chest.
13. what bones are mostly made of.
14. a whitish fiber that transmits impulses of sensation to the brain or spinal cord
17. the most active muscle in the body.