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)
What does the head, nucleus, and acrosome of the spermatozoon contain?
- Contains the paternal genetic material
- Contains enzymes that will help the spermatozoon pierce the ovum’s envelope to penetrate it at the moment of fertilization
