1. 1, the development of reproductive organs Male reproductive organs include external genitalia and internal genitalia. External genitalia mainly includes penis and scrotum; The internal genitalia mainly includes testis, epididymis, seminal vesicle and prostate.
1.2. The development of male secondary sexual characteristics is accompanied by the development of reproductive organs. The so-called sexual characteristic refers to a characteristic that distinguishes men from women. Everyone can determine whether they are male or female at birth, and distinguish them by reproductive organs. The difference between male and female reproductive organs is called primary sexual characteristics, also known as main sexual characteristics.
1.3, Male Sexual Physiology Hygiene In the process of reproductive system development, men will gradually appear some sexual physiological phenomena. Nocturnal emission: Nocturnal emission is a normal physiological phenomenon and a special symbol of male sexual maturity. The function of testis is to produce sperm. The boy's testicles have been growing for about a year around the age of 14, and he began to make the first mature seed of life-sperm, and then he made new sperm every day to continue his life.
2. How many stages are there in a boy's adolescence?
2. 1, early stage: sudden growth stage, secondary sexual characteristics began to appear.
2.2, metaphase: characterized by the rapid development of secondary sexual characteristics, most of them have the first nocturnal emission.
2.3. Late stage: The gonad development is basically mature, the secondary positive development is completed, the epiphysis tends to be completely healed, and the physique gradually stops. Due to the influence of climate, physique, heredity, nutrition and other factors, the age of adolescence is not the same, slightly different.
Boys enter puberty from 13- 14 to 18-20. During this period, not only the body developed rapidly, but also the male characteristics gradually matured. If there is a male posture with secondary sexual characteristics such as low tone, prominent Adam's apple, long beard and pubic hair, and there are physiological phenomena such as nocturnal emission and masturbation. Men have long beards, prominent Adam's apple, low tone, muscular, and more body hair, with body hair (pubic hair) around armpits and genitals.
3. What are the characteristics of boys' adolescence?
Adolescence is the most rapid and obvious period of physical and mental changes of teenagers. During this period, men are divorced from the characteristics of children in terms of body, appearance, behavior, self-awareness, communication and emotional characteristics, and outlook on life, and gradually become mature and close to adults. These rapid changes will make teenagers have mental health problems such as confusion, inferiority, anxiety and even bad behavior. Therefore, adolescence is a predictable and unpredictable period. That is to say, in this period, the development of people from children to adults is predictable, but what will happen or what problems will occur in the development process is unpredictable.
What should boys pay attention to during adolescence?
We should develop good living habits and pay attention to the hygiene of face and hands. Hands are the place where bacteria remain the most. It is best to touch your face less with your hands to avoid the development of inflammatory bacteria to the deep level. Young boys like to stay up all night playing games and facing the computer all night. The radiation of the computer is very strong and it is easy to breed acne, so don't stay up all night.
Don't go clubbing often, but always drink plenty of water. Irregular life is also an important cause of acne, so patients with acne should be optimistic, ensure adequate sleep, and pay more attention to work and rest at ordinary times in order to keep acne away from us forever. Pay attention to your diet, eat more whole grains, be full at 8 points per meal, and don't overeat. Try to eat less spicy, sugary, fatty and greasy food, smoke less and drink less. Because these foods, cigarettes and alcohol are very irritating to the skin.