Page 81 - 86 human physiology part-2

Chapter 15

Contraceptive for Men

Vasectomy: In the procedure the vas deferens of each testes is cut and tied off to prevent the
passage of sperm. Sperm is still produced and stored in crypt sites causing inflammation. Because of
this inflammatory response the immune system acts on them destroying them and then having
antisperm antibodies. This causes a lower possibility if the vasectomy is reversed to becoming fertile
again.

Condoms: A device, usually made of latex, or more recently polyurethane, that is used during
sexual intercourse. It is put on a man's penis and physically blocks ejaculated semen from entering the
body of a sexual partner. Condoms are used to prevent pregnancy, transmission of sexually transmitted
diseases (STDs - such as gonorrhea, syphilis, and HIV), or both.

Review Questions

1. This is needed to make immature sperm mature

A) FHS
B) LH
C) FSH
D) HL

2. These become engorged with blood in an erection

A) corpora cavernosa
B) fiberous envelope
C) septum pectiniforme
D) integument
E) dorsal veins

3. The difference between male and female sperm

A) female sperm have a larger head
B) male sperm are lighter
C) female sperm are faster
D) male sperm are weaker
E) A and B
F) C and D

4. The entire process of sperm formation takes about

A) 5-6 weeks
B) 7-8 weeks
C) 3-4 weeks
D) 9-10 weeks

5. Hyper Activation occurs when

296 | Human Physiology