What Causes Spermatogenesis to Begin?
Spermatogenesis begins at puberty with increased secretion of gonadotropin-releasing hormone (GnRH). GnRH stimulates the secretion of LH and FSH from... View Article
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What Hormones Are Produced by the Ovaries and Testes?
Ovaries and testes are the primary sex organs in females and males, respectively. They act as endocrine glands also and... View Article
What Hormones Are Made in the Testes?
Testes are the primary sex organ in males. It also acts as an endocrine gland and produces and secretes androgens... View Article
What Happens During the Acrosome Reaction?
The acrosome is the cap-like structure present at the head of the sperm. It contains various proteolytic enzymes such as... View Article
What Is a Graafian Follicle in the Ovary?
Graafian follicle is the fully matured follicle, which ruptures and releases the ovum during the ovulatory phase. After ovulation, the... View Article
How Sperm Formation Takes Place?
Sperm formation takes place in testes. The formation of sperms from immature germ cells or spermatogonia is called spermatogenesis. Spermatogonia... View Article
What Is the Size of Human Sperm?
The length of the fully mature human spermatozoa is around 55-65 µm. It is a motile cell made up of... View Article
Is the Uterus the Site of Fertilization?
No, fertilisation takes place in the ampullary region of the fallopian tubes. The main parts of the female reproductive system... View Article
What Cells Undergo Mitosis in Humans?
Mitosis is equational division. It is required for growth, repair and regeneration. All the somatic cells undergo mitosis. Germ cells... View Article
What Hormone Is Secreted by the Ovaries?
The two main classes of hormones secreted by the ovaries are estrogen and progesterone. These are steroid hormones. Estrogen is... View Article
What Is the Difference Between Graafian Follicle and Corpus Luteum?
Graafian follicle is the fully mature follicle, which ruptures and releases the ovum. Graafian follicle gets transformed into the corpus... View Article
Why Is Meiosis Called a Reduction Division?
Meiosis is called reduction division because the number of chromosomes is halved in the cell after the meiotic division. The... View Article
What Does 2n Mean?
2n refers to having two sets of chromosomes or diploid organisms. E.g. humans are diploid with 2n = 46. Gametes... View Article
Which One Takes Part in Acrosome Synthesis?
Mitochondria Nucleus Chromosomes Golgi Complex Answer: 4.Golgi Complex Explanation: Acrosome is a cap-like structure present at the anterior part of... View Article
How Many Sperms Are Produced in Spermatogenesis?
During spermatogenesis, each spermatogonial cell gives rise to 512 sperms. After a series of mitotic divisions, each spermatogonium gives rise... View Article
What Are the 3 Phases of the Ovarian Cycle?
Ovarian cycle refers to the series of events occurring during a menstrual cycle, which comprises the development of follicles, ovulation... View Article
How Long Does Spermatogenesis Take on Average?
On average it takes around 74 days in humans to complete spermatogenesis and produce sperms from primitive germ cells. Also... View Article
Where Do Spermatids Mature?
Sperms are produced in the seminiferous tubules of testes. The fully formed spermatozoa get transferred to the epididymis through rete... View Article
Are Primary Spermatocytes Diploid or Haploid?
Primary spermatocytes are diploid. The spermatogonia cells proliferate and divide by mitosis to produce primary spermatocytes. Also Check: Why Is... View Article
Why Are the Ovaries and Testes Considered Endocrine Glands?
Ovaries and testes produce and secrete hormones, so they are considered endocrine glands. The Leydig cells in the testes secrete... View Article
