Extrafusal muscle fibers are the skeletal standard muscle fibers that are innervated by alpha motor neurons and generate tension by contracting, thereby allowing for skeletal movement. They make up the large mass of skeletal muscle tissue and are attached to bone by fibrous tissue extensions (tendons). whereas Intrafusal muscle fibers are skeletal muscle fibers that serve as specialized sensory organs (proprioceptors) that detect the amount and rate of change in length of a muscle.
<span>Pubic hair and underarm hair are under control of androgens (male) and estrogen (female) during the puberty. However, the growth of hair is mostly in response to the increasing levels of testosterone in both, girls and boys.Those are the part of secondary sex characteristics.</span>
They are not supposed to do it on ethics, but some do anyways,
They all started to get digest.
Explanation:
Digestion starts in the mouth and all the way to the small intestine. And, there are many enzymes and digestive jucies which help to digest spefic nutriton amoung them.
