Gonad, in zoology, primary reproductive gland that produces reproductive cells (gametes). In males the gonads are called testes; the gonads in females are called ovaries.
Do male gonads produce gametes?
The male gonad, the testicle, produces sperm in the form of spermatozoa. The female gonad, the ovary, produces egg cells. Both of these gametes are haploid cells. Some hermaphroditic animals have a type of gonad called an ovotestis.
What are the main function of gonads?
The two major functions of the gonads in the adult are steroid hormone production and gametogenesis. Reproductive hormones are also pivotal in sexual differentiation, fetal development, growth and sexual maturation.
Are gonads the same as gametes?
Gonads are the organs, whereas gametes are the haploid sex cells. Gonads are responsible for the production of gametes and hormones, whereas gametes are responsible for the production of zygote.
How many gonads do humans have?
Sex glands develop in a pair of longitudinal ridges located alongside the mesentery, the anchoring fold… The usually paired gonads of vertebrates produce both gametes and hormones necessary for reproduction. Some, such as both male and female adult cyclostomes, have only one gonad.
What does testosterone do in males?
Testosterone is a sex hormone that plays important roles in the body. In men, it’s thought to regulate sex drive (libido), bone mass, fat distribution, muscle mass and strength, and the production of red blood cells and sperm. A small amount of circulating testosterone is converted to estradiol, a form of estrogen.
Is a sperm a cell?
In the human reproductive process, two kinds of sex cells, or gametes (GAH-meetz), are involved. The male gamete, or sperm, and the female gamete, the egg or ovum, meet in the female’s reproductive system.
What stimulates gamete production?
In both males and females, FSH stimulates gamete production and LH stimulates production of hormones by the gonads.
What organ system does the gonads belong to?
Endocrine system: gonads and their hormones: The gonads are the sex organs.
Which hormone is released by the pituitary gland?
The major hormones produced by the pituitary gland are: ACTH: Adrenocorticotrophic hormone. Stimulates the production of cortisol, a “stress hormone” that maintains blood pressure and blood sugar levels. FSH: Follicle-stimulating hormone.