The Reproductive System
How does mitosis differ from meiosis?
Mitosis is part of somatic cell division it is a duplication process. During this process two daughter cells are produced from a single parent cell and each one contains identical pairs of chromosomes. When daughter cells have both members of each chromosome pair they are called diploid (Martini & Nath, 2008). Meiosis involves two rounds of cell division called meiosis I and meiosis II. This process produces four cells, each one different from the other; each one has 23 individual chromosomes. These are called haploid because they contain only one member of each pair of chromosomes (Martini & Nath, 2008).
Your male patient is having a vasectomy and is concerned about testosterone levels after the procedure. Explain what he should expect after his vasectomy. A vasectomy is a process where a piece of the ductus deferens, which transports sperm to the urethra, is removed to prevent the ejaculation of sperm (Martini & Nath, 2008). The body still produces testosterone which travels through the blood stream so this will not be affected.
Describe the process of spermatogenesis.
Spermatogenesis is the process of the development of sperm. Spermatogenesis involves both mitosis and meiosis, is the mitotic division of each diploid spermatogonium produces two daughter cells. One of these cells is a spermatogonium that keeps in contact with the basal lamina, and the other is a primary spermatocyte that is displaced towards the lumen. Meiosis begins and each primary spermatocyte has 46 individual chromosomes. When meiosis I ends the daughter cells are the then called secondary spermatocytes. Each one of these contains 23 chromosomes and each of these have a pair of duplicate chromatids. Then they enter prophase II, then metaphase II, anaphase II, and telophase II. At the end of these there are four haploid spermatids which each contain 23 chromosomes (Martini & Nath, 2008). 4.
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