reviewer on sexual reproduction

1. Reproductive system-the body system which is responsible for perpetuation of species
2. hormones-used by the reproductive system to trigger sexual maturity so that an organism is physically capable to reproduce
3. Gametes-sex cells tat are produced by reproductive system; haploid sex cells that contained only half of the organisms’ chromosome number.
4. Egg cells-large gametes produced by females
5. Sperm cells-small gametes produced by males
6. Sexual reproduction-a process whereby sperm and egg cell nuclei are brought together
7. Fertilization-union of sperm and egg
8. Scrotumm-an out patching of the skin that hangs below the pelvic region
9. Dartos muscle-a muscle which is responsible for the contraction and relaxation of the scrotum to regulate body temperature.
10. Seminifeerous tubules-highly coiled tubes where sperm formation begins
11. Semen-a thick fluid that is expelled from the penis during sexual activity
12. Fructose-secreted by the seminal vesicle and are used by the sperm as an energy source
13. Prostate gland secretions- helps buffer the acidic conditions that sperm must encounter inside the female reproductive tract
14. Urethra- serves as channel for ejaculation of sperm during sexual arousal, also for urine excretion at other times
15. Ejaculatory Duct- one of the pair of the sperm conducting ducts
16. Seminal vesicles- one of the pair of the glands that secrete the fructose and prostaglandins which become part of the semen.
17. Bulbourethral gland- one of the pair of the glands that secrete lubricating fluids
18. Vas deferens- on of the pair of ducts for sperm transport
19. Epididymis- one of the pair of ducts in which sperm completes its maturation; the portion farthest from the testis and store mature sperm.
20. Testes-one of the pair of the primary reproductive organ packed with sperm producing tubules and cells that secrete testosterone and other hormones.
21. Penis- organ of sexual intercourse in males.
22. Spermatogonia- undifferentiated cells in the seminiferous tubules wall
23. Spermatocytes- the one that enters meiosis, they are daughter cells of spermatogonia
24. Sertoli cells- the only other type of the cell located iin the seminiferous tubules which provides cells with nourishment and molecular signals
25. Secondary spermatocytes- form during meiosis I and they are haploid cells but each one in the chromosomes is in duplicated states, consists of two sister chromatids
26. Acrosome- part of the sperm which contains an enzyme which covers most of the head region
27. Head- part of the sperm which contain the nucleus
28. Sperm tail- help the sperm in propulsion
29. Testosterone- control the growth, form, and functions of the reproductive tract in males
30. LH and FSH- secreted by the anterior lobe of the pituitary gland
31. Hypothalamus- part of the forebrain controls the sperm formation by controlling secretion of LF, FSH and testosterone.