Answer:
Muscles move body parts by contracting and then relaxing. Muscles can pull bones, but they can't push them back to the original position. So they work in pairs of flexors and extensors. The flexor contracts to bend a limb at a joint.
Explanation:
The answer is Social Gerontoloogy
C.3 vaccines help prevent diseases and stuff
Answer: In the mouth and pharynx, it consists of skeletal muscle that aids in swallowing.In the rest of the digestive tract, it consists of smooth muscle three layers in the stomach two layers in the small large intestines and associated nerve fibers.
