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| Sex cells, have half the # of chromosoomes as other cells in the body. Sperm cells are the males and Oocytes are the females. |
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| A kind of cell division that produces gametes |
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| The normal chromosome number in human cells is 46. Also known 2n number of chromosomes |
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| Consists of 22 autosomal pairs, which are the chromosomes except the sex chromosomes, and 1 pair of sex chromosomes |
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| X & Y= MALE X & X= FEMALE |
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| One set chromosomes, in contrast to diploid; characteristic of gametes |
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| One-half of of a chromasomes; seperates from its partner during cell division. Replicated chromosome |
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| The constricted region joining the two sister chromatids that make up an X-shaped chromosome. |
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| Homologous chromosomes align as pairs. Part of a chromatid of one homologous chromosome breaks off and is exchanged with part of another chromatid from the other homologous chromosome |
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| Exchange of genetic material. Allows the exchange of genetic material between maternal and paternal chromosomes. |
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| Crossing over and _____________ of maternal and paternal chromosomes are responsible for the diversity in the genetic make up of sperm cells and oocytes. |
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| The 1st meiotic division. Where the chromosome # is reduced from a 2n number (46 chromosomes , or 23 pairs) to an n number (23 chromosomes, or 1 from each homologous pair) |
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| saclike structure containing the testes. Divided into right and left internal compartmentsby an incomplete connective tissue septum. |
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| Small, ovoid organs each about 4-5cm long within the scrotum. Both endocrine and exocrine glands. |
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| Coiled tubes located in the lobules.The uncoiled combined length of the seminiferous tubules in both testes is nearly half a mile. Site of sperm cell production. |
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| INTERSTITIAL CELLS/ CELLS OF LEYDIG |
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Definition
| clusters of cells within delicate connective tissue surrounding the seminiferous tubules. They are endocrine cells that secrete testosterone |
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| Cells that give rise to sperm cells. They are located in the periphery of the seminiferous tubules and divided by mitosis |
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| Divide by meiosis. Spermatocyte arising by growth phase from a spermatogonium; gives rise to secondary sprematocytes after the 1st meiotic division |
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| Spermatocyte derived froma primary sprematocyte by the first meiotic division. Each secondary spermatocyte gives rise by the 2nd meiotic division to 2 spermatids |
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| Cell derived from the secondary spermatocyte;gives rise to spermatozoon. |
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| Male gamnete or sex cell, composed of a head and a tail. Contains the genetic info transmitted by the male. |
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Definition
| male organ of copulation, transferring sperm cells from the male to the female. Contains 3 columns of erectile tissue. |
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| 2 columns of erectile tissue forming the dorsal portions of the sides of the penis |
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Definition
| Surrounds the spongy urethra and forms the ventral portion of the penis. |
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| Conical expansionof the corpus spongiosumthat forms the head of the penis |
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| HUMAN CHRIONIC GONADOTROPIN (hCG) |
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Definition
| Hormone secreted by the placenta. Stimulates the secretion of testosterone by the fetus; during the 1st trimester, its stimulates ovarian secretion from the corpus leteum of the estrogen and progesterone required for the maintenance of the placenta. In a male fetus, is stimulates the secretion of testosterone by the fetal testis. |
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| Cells from which oocytes develop |
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| By the time of birth, many of the oogonia have degenerated , and the remaining have begun meiosis and now called _________.The oocyte that arises from the oogonium via the process of oocytogenesis, and gives rise to secondary oocyte and polar body after first meiotic division (meiosis I). |
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Definition
| Release of an ovum or secondary oocyte, from the vesticullar follicle |
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| Oocyte in which the second meiotic division stops at metaphase II unless fertilization |
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| One of the 2 small cells formed during oogenesis because of unequal division of the cytoplasm |
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Term
| Internal Female Genitalia |
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Definition
| Ovaries,uterine tubes,uterus, and vagina |
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| EXTERNAL FEMALE GENITILIA/ EXTERNAL FEMALE GENITALS/VULVA/PUDENDUM |
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Definition
| Vestibule, and its surrounding structures |
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| The vestibule is bordered by a pair of thin, longitudinal skin folds |
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| A small erectile structure. Located in the anterior margin of the vestibule. |
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| The 2 labia minora unite over the clitoris to form a fold of skin |
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| The clitoris contains 2 erectile structures, the _________. Comparable to the corpora cavernosa of the penis |
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| Modified sweat glands that produce milk. Located within the breast |
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