Act: Use information from the text book to build a comparison table between sexual and asexual
Functions of each of the organs which are part of the male reproductive system.
|Penis||Function: The penis serves as the male organ used to deliver semen to the female during intercourse and also houses the urethra, which is used to transport semen and urine.|
Function: These tubules produce sperm. The two testes produce testosterone, the primary male sex hormone.
|Scrotum||Function: Because sperm must be produced and develop at a temperature slightly lower than body temperature, the scrotum serves as a method of maintaining proper temperature control by contracting or relaxing in order to bing the testicles closer or further away from the body.|
Carries the urine or sperm to outside the body. During intercourse and ejaculation, only sperm is allowed to flow through the urethra.
|Bulbourethral glands||Produce a clear fluid that lubricates the urethra for semen transport and to reduce any acidity in the urethra that is harmful to sperm.|
|Prostate gland||The prostate gland produces fluids that make up semen. These fluids also supply nutrients to the sperm.|
|Epididymis||Take immature sperm and mature them. Once matured, the epididymis stores mature sperm until climax, when they are carried to the urethra.|
|Seminal vesicles||Attached to the vas deferens, these small “pouches” produce fructose, which supplies sperm with energy so that they may swim to fertilize the egg. The liquid produced by the seminal vesicles constitutes the largest single component of semen volume.|
|Ejaculatory ducts||These ducts empty into the urethra and consist of the vas deferens and seminal vesicles combining together.|
4. State the components and the function of semen.
Semen: Sperm-containing fluid called semen
Sperm exist to unite one half of the man’s DNA with one half of the woman’s. Since it only has a half set of DNA, sperm cells are referred to as haploid, meaning half. These DNA halves combine when the sperm fertilizes a female ova (egg). This creates a complete set of DNA in the fertilized egg, which grows into a human fetus.
It contains sperm cells, which are capable of fertilizing the female eggs. Semen also contains other liquids, known as seminal plasma, which help to keep the sperm cells viable.
5. Make a large labelled drawing of a sperm cell and state how the structure is adapted to its function.
The head contains genetic information and an enzyme to help penetrate the egg cell membrane. The middle section is packed with mitochondria for energy. The tail moves the sperm to the egg.