These bacteria exist in many different parts of the body, and their presence usually does not cause any problems for the host body. The following is a list of the main sites for bacteria that consitute the normal flora. 1  The skin, especially the moist areas, such as the groin and between the toes.2  The respiratory tract, particularly the nose. 3  Urinary tract. 4  The digestive tract, i.e. the mouth, the terminal ileum and the colon.hese bacteria exist in many different parts of the body, and their presence usually does not cause any problems for the host body. The following is a list of the main sites for bacteria that consitute the normal flora. 1  The skin, especially the moist areas, such as the groin and between the toes.
Androgen's such as Testosterone not only give a boy a deeper voice but sets him up for sexual reproduction too.   Testosterone is the male hormone that begins to spread around the body during puberty in a boy. Besides a deep voice it brings pubic hair and growth to the penis, testicles, arms, legs, feet, hands. You name it ! + 14 others found this useful.
The sound, or phonation, is produced by a pair of vocal folds that are situated in the larnyx. The voice box can change the nature of the sounds coming out of our lungs. When we turn the larynx on it vibrates. That is, the voice box works to make the quiet sounds coming out of our lungs into loud sounds. The larynx can do this very fast. It can switch from quiet sounds to loud sounds and back again.