Science (Textbook questions, male) Flashcards
Define puberty.
Puberty is the period in life in which a set of anatomical physiological and psychological changes takes place in children who are becoming adolescents.
What triggers puberty?
Certain glands produce a larger quantity of hormones linked to the reproductive systems.
What are anatomical changes?
Change in body shape
Appearance of hair on certain areas of the body
What are physiological changes?
Maturity of the internal and external reproductive organs
Ability to reproduce
What are psychological changes?
Search for identity
Confrontation with adults
Sexual interest in another person
Define hormonal gland.
Produce hormones and secrete them
Define hormone.
Chemical substances that transmits messages throughout the body
In men, how can sexual excitation be triggered?
By images, sounds, odors and physical contact
Define erection.
An accumulation of blood in the penis leading to the swelling and rigidity of the organ
What is the function of an erection?
An erection causes the penis to become rigid, which helps it to open the walls of the vagina during penetration
Define ejaculation.
Expulsion of semen in spasms
What is the average number of spermatozoa contained in an ejaculation?
average is 350 million
Define spermatogenesis.
Process by which the testes produce sperm
How long does the complete process of spermatogenesis take?
64-72 days
- What does the tail of the spermatozoon allow it to do?
2. What does the mid-piece contain?
- Cover great distances
2. mitochondria (power house of the cell)
