Testosterone, the hormone responsible for the secondary sexual characteristics that develop in the male during adolescence, stimulates
spermatogenesis
. These secondary sex characteristics include a deepening of the voice, the growth of facial, axillary, and pubic hair, and the beginnings of the sex drive.
What hormones develop secondary sex characteristics?
Estradiol
is responsible for the development of secondary sexual characteristics, that is, growth and development of the breasts and reproductive organs, fat redistribution (hips, breasts), and bone maturation.
What hormone causes secondary female characteristics?
Estrogens
are a group of steroid hormones that regulate reproductive function and secondary sex characteristics in the female, including breast development.
What hormone is responsible for its secondary male characteristics?
Testosterone
is also involved in regulating secondary male characteristics, which are those responsible for masculinity.
Is testosterone responsible for the secondary male sex characteristics?
Testosterone is responsible for the development of
secondary sex characteristics
, features that stimulate male development (including characteristics that are not part of the reproductive system, such as facial hair growth and voice change).
What triggers puberty in males?
Puberty happens when the pituitary starts making more of two hormones,
luteinizing hormone (called LH)
and follicle-stimulating hormone (called FSH), which cause the testicles to grow and produce the male hormone testosterone.
What are the hormones responsible for the secondary characteristics of male female?
The Leydig cells produce
testosterone
, which also is responsible for the secondary sexual characteristics of males. In females, FSH and LH cause estrogen and progesterone to be produced.
What are the secondary characteristics of male?
For males, secondary characteristics include
facial and chest hair
, increased body hair, pelvic build (lack of rounded hips), upper body muscular build, and the ability to generate muscle mass at a faster rate than the female.
What hormone is responsible for puberty in males?
Testosterone
is the hormone that causes most of the changes in a guy’s body during puberty. Sperm cells must be produced for men to reproduce. In girls, FSH and LH target the ovaries, which contain eggs that have been there since birth.
What hormone controls sperm?
The development and maintenance of spermatogenesis is dependent on the
pituitary gonadotropins; FSH, and LH
. Both hormones are secreted and regulated as a part of the HPG axis in response to the hypothalamic gonadotropin-releasing hormone (GnRH).
At what age do boys start ejaculating?
Boys, capable of having erections since infancy, can now experience ejaculation. Usually, this first happens
between the ages of 11 and 15
, either spontaneously in connection with sexual fantasies, during masturbation, or as a nocturnal emission (also called a wet dream).
When does puberty start and end for males?
It can start as early as age 9. Puberty is a process that takes place for several years. Most girls finish puberty by age 14. Most
boys finish puberty by age 15 or 16
.
What are the stages of male puberty?
| Tanner stages in boys Age at the start Noticeable changes | Stage 1 After the 9th or 10th birthday None | Stage 2 Around age 11 Pubic hair starts to form | Stage 3 Around age 13 Voice begins to change or “crack”; muscles get larger | Stage 4 Around age 14 Acne may appear; armpit hair forms |
|---|
What are the characteristics of male?
Traits traditionally viewed as masculine in Western society include
strength, courage, independence, leadership, and assertiveness
. Machismo is a form of masculinity that emphasizes power and is often associated with a disregard for consequences and responsibility.
What hormone is responsible for pubic hair?
At about the same time, the adrenal glands of both boys and girls begin to produce a group of hormones called
adrenal androgens
. These hormones stimulate the growth of pubic and underarm hair in both sexes.
What stimulates production of testosterone?
In response to gonadotrophin-releasing hormone from the hypothalamus, the pituitary gland produces
luteinising hormone
which travels in the bloodstream to the gonads and stimulates the production and release of testosterone.
