Muscle HW

2. The hormone that enhances respiration and increases muscle activity is _______.
4. The hormone that decreases heart rate and muscle activity is _______.
5. An ________ muscle is a muscle that moves without conscious control.
6. A muscle you consciously choose to move is a ________ muscle.
8. A _______ is a band of tough, fibrous tissue, that connects a muscle to a bone.
9. ________ is the process of a biological system maintaining stability by adjusting to outside conditions.
11. There are about ________ muscles in the human body (write number out).
12. The type of muscle that is located in the walls of hollow organs, and is spindle-shaped is a _______ muscle.

1. The defect that involves a hole in the wall that separates the ventricles of the heart is called ________.
3. ________ pairs of muscles create movement when one contracts and the other relaxes.
7. Muscles that are located in the walls of the heart, and appear striated are _______ muscles.
10. ________ muscle cells are located in muscles that are attached to the skeleton, and appear striated.