What are 10 facts about muscles?

Answer 1

1. There are three types of muscle fibers: skeletal, cardiac, and smooth muscle.

2. Skeletal muscles are called voluntary muscles because they are under your own volitional control.

3. Muscle tissue is derived from mesoderm.

4. The word muscle is derived from the Latin musculus, meaning "mouse."

5. Muscles are usually paired - agonist and antagonist - because muscles can only produce force on contractions.

6. There are two types of muscle fibers: fast twitch and slow twitch. Slow twitch fibers can contract for long periods of time, while fast twitch fibers produce quick and powerful contractions but fatigue relatively rapidly.

7. Contraction of muscle fibers is produced by the interaction between actin and myosin molecules.

8. Muscles use a variety of sources of fuel depending on the intensity and duration of exercise. From short and intense to long and lower-intensity exercise, the fuel source changes from ATP, PCr, Lactic Acid Fermentation of Glucose, Aerobic Respiration Using Glucose, Aerobic Respiration Using Fat.

9. Muscles typically store carbohydrates in the form of glycogen, allowing ready access to energy stores in times of energetic activity.

10. In addition to motor axons that produce contractions, muscle cells contain sensory neurons that transmit information about muscle length and tension to the central nervous system.

Answer 2

1. They help your body to move and lift/carry things.