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A&P Repro System
A&P Reproductive System
| Term | Definition |
|---|---|
| ime between conception and birth; consists of three stages – germinal stage, embryonic stage, and fetal stage | Prenatal period |
| cellular division, especially of a fertilized egg cell – the first step in a single celled zygote becoming a multi-celled organism | Cleavage |
| the innermost layer of cells or tissue of an embryo in early development, or the parts derived from this, which include the lining of the gut and associated structures | Endoderm |
| interval from birth to 28 days of age; time of greatest risk | Neonatal period |
| the middle of the three primary germ layers of an embryo that is the source of many bodily tissues and structures (such as bone, muscle, connective tissue, and dermis) | Mesoderm |
| three primary layers of cells that develop through the process of gastrulation; endoderm, mesoderm, and ectoderm | Primary germ layers |
| phase in embryonic development in which a single layered blastula becomes a multilayered gastrula | Gastrulation |
| hollow sphere of cells produced during the development of an embryo by repeated cleavage of a fertilized egg | Blastocyst |
| the process or period of developing inside the womb between conception and birth | Gestation |
| process in which a developing embryo contacts the uterine wall and remains attached to it until birth | Implantation |
| solid mass of blastomeres resulting from a number of cleavages of a zygote, or fertilized egg | Morula |
| formation of the placenta within the uterus | Placentation |
| the outermost layer of cells or tissue of an embryo in early development, or the parts derived from this, which include the epidermis and nerve tissue. | Ectoderm |
| an embryo at the stage following the blastula, when it is a hollow cup-shaped structure having three layers of cells | Gastrula |
| forcible, sudden expulsion of semen from the male urethra; reflex action due to sexual stimulation | Ejaculation |
| process involving the fusion of male and female gametes to form a zygote | Fertilization |
| production and development of an ovum (egg cell) | Oogenesis |
| loss of a cell’s power of division and growth due to age related deterioration | Senescence |
| secretes progesterone for maintenance of pregnancy | Corpus Luteum |
| involuntary discharge of semen from the male urethra; often occurs during sleep | Emission |
| present in the testicular interstitial tissue, and their main function is to produce testosterone for the maintenance of spermatogenesis and extratesticular androgenic and anabolic functions | Leydig Cells |
| phase in embryonic development in which the three primary germ layers produce and develop into organs | Organogenesis |
| production and development of a sperm cell | Spermatogenesis |
| enlarged, engorged, and rigid state of the penis | Erection |
| any of the coiled threadlike tubules that make up the bulk of the testis and are lined with a layer of epithelial cells from which the spermatozoa are produced | Seminiferous Tubule |
| vesicle in the ovary that contains a developing egg | Follicle |
| nourish developing sperm cells through the stages of spermatogenesis | Sertoli Cells |
| scar on the surface of the ovary that is a remnant of ovulation | Corpus Albicans |
| a temporary structure formed immediately after ovulation from the ovarian follicle as it collapses and is filled with blood that quickly clot | Corpus Hemorrhagicum |
Created by:
YoungbloodScience
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