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39 Cards in this Set
- Front
- Back
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The process by which animals produce offspring. |
Reproduction |
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__________ are some of the most critical management decisions that a producer makes. |
Reproductive decisions |
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The ability to _________ is one of the basic characteristics of a living thing. |
Reproduce |
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In order for a species to continue, they must be able to… |
Produce viable offspring |
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The production of offspring by the fusion of haploid gametes (eggs & sperm) from two parents to form a diploid zygote (fertilized egg). |
Sexual reproduction |
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__________ is increased by the random combinations of genes from the parents. |
Genetic variability |
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Where male gametes, sperm cells, are produced. |
Testes |
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Testes contain the __________ where sperms are formed. |
Seminiferous tubules |
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______ scattered between the tubules produce testosterone and other androgens. |
Leydig cells |
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Sperm production can’t occur at normal body temperature in mammals, so the testes are held outside the body in the ______. |
Scrotum |
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Where the maturation of sperm happen Where they become motile and gain the ability to fertilize an egg |
Epididymis |
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Sperm leave the body through the ______ and ______ |
Vas deferens and urethra |
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The ______ deposits semen in the female reproductive tract |
Penis |
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An ______ occurs around rhythmic muscular contractions compress the urethra and expel the semen. |
Orgasm |
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The expulsion of semen |
Ejaculation |
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The ______ produces a secretion that buffers the vaginal pH, which is normally 3.5 to 4. |
Prostate gland |
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The ______ add fructose to nourish the sperm and prostaglandins to promote contractions in the female |
Seminal vesicles |
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The ______ (cowpers gland) produces mucus which lubricates the penis |
Bulbourethral gland |
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The production of spermatozoa occurs in the seminiferous tubule |
Spermatogenesis |
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The conversion of the spermatids into spermatozoa |
Spermiogenesis |
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The release of the spermatozoon into the lumen of the seminiferous tubule is called… |
Spermiation |
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The final maturation of the spermatozoon which occurs in the female genital tract is called as… |
Capacitation |
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Is necessary for the development and function of the male reproductive tract |
Testosterone |
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Is necessary for the development and function of the male reproductive tract Stimulates spermatogenesis |
Testosterone |
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Stimulates the development of secondary sexual characteristics such as wattle and comb growth, colored plumage etc. and has growth-promoting effects |
Testosterone |
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Where the female gametes, egg cells, are produced |
Ovaries |
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A follicle contains ______ as well as _______ that nurture the developing egg |
Egg cell, follicle cells |
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Each month from puberty through menopause, on follicle ruptures and release its egg cell |
Ovulation |
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The ______ forms from the ruptured follicle secretes ______ to help maintain the uterine lining during pregnancy |
Corpus luteum, progesterone |
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If the egg is not fertilized, the lining… |
Disintegrates |
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After ovulation, the egg leaves the ovary and enters the ______, which it follows to the uterus. |
Oviduct |
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The muscular sphincter between uterus and vagina |
Cervix |
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The muscular structure that functions to receive the penis and also as the birth canal. It opens between urethra and anus. |
Vagina |
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The ______ is homologous with the glans penis in males |
Clitoris |
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Responsible for when female mammals come into “heat” or estrus and mating occurs at this time |
Estrogen |
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Increasing levels of these estrogens is an important factor in the development of… |
Libido |
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Responsible for development of secondary sexual characteristics |
Estrogen |
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Considered the hormone of pregnancy because it causes development of the uterus prior to implantation of the fertilized ovum |
Progesterone |
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Inhibits ovulation during pregnancy and promotes complete development of the mammary gland |
Progesterone |
