WordNet
- the body of an adult man (同)man''s body
- for or pertaining to or composed of men or boys; "the male lead"; "the male population"
- an animal that produces gametes (spermatozoa) that can fertilize female gametes (ova)
- a person who belongs to the sex that cannot have babies (同)male person
- characteristic of a man; "a deep male voice"; "manly sports" (同)manful, manlike, manly, virile
- being the sex (of plant or animal) that produces gametes (spermatozoa) that perform the fertilizing function in generation; "a male infant"; "a male holly tree"
- any mature animal
- a fully developed person from maturity onward (同)grownup
- (of animals) fully developed; "an adult animal"; "a grown woman" (同)big, full-grown, fully grown, grown, grownup
- informal terms for a mother (同)mama, mamma, mom, momma, mommy, mammy, mum, mummy
- the capital of Maldives in the center of the islands
PrepTutorEJDIC
- 『男性の』,男の;(動物が)雄の,(植物が)雄性の / 《名詞の前にのみ用いて》(機械・器具などが)雄の差し込み口のある / 『男性』;(動物の)雄,雄性植物
- 『おとなの』,成人した,成熟した / 成人向きの / 『おとな』,成人
- 《M-》《話》おかあちゃん(mamma)
Wikipedia preview
出典(authority):フリー百科事典『ウィキペディア(Wikipedia)』「2014/12/29 20:21:12」(JST)
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Sexual maturity is the age or stage when an organism can reproduce. It is sometimes considered synonymous with adulthood. In humans, the process of sexually maturing is termed puberty.
Most multicellular organisms are unable to sexually reproduce at birth (or germination), and depending on the species, it may be days, weeks, or years until their bodies are able to do so. Also, certain cues may cause the organism to become sexually mature. They may be external, such as drought, or internal, such as percentage of body fat (such internal cues are not to be confused with hormones which directly produce sexual maturity).
Sexual maturity is brought about by a maturing of the reproductive organs and the production of gametes. It may also be accompanied by a growth spurt or other physical changes which distinguish the immature organism from its adult form. These are termed secondary sex characteristics, and often represent an increase in sexual dimorphism. For example, before puberty, human children have flat chests, but adult females have breasts while adult males generally do not. However, there are exceptions such as obesity and hormone imbalances such as gynecomastia.
After sexual maturity is achieved, it is possible for some organisms to become infertile, or even to change their sex. Some organisms are hermaphrodites and may or may not be able to produce viable offspring. Also, while in many organisms sexual maturity is strongly linked to age, many other factors are involved, and it is possible for some to display most or all of the characteristics of the adult form without being sexually mature. Conversely it is also possible for the "immature" form of an organism to reproduce. This is called progenesis, in which sexual development occurs faster than other physiological development (in contrast, the term neoteny refers to when non-sexual development is slowed - but the result is the same, the retention of juvenile characteristics into adulthood).
See also
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English Journal
- The epidemiology of primary headache disorders in Zambia: a population-based door-to-door survey.
- Mbewe E1, Zairemthiama P, Yeh HH, Paul R, Birbeck GL, Steiner TJ.
- The journal of headache and pain.J Headache Pain.2015 Dec;16:515. doi: 10.1186/s10194-015-0515-7. Epub 2015 Apr 2.
- BACKGROUND: Little is known of the epidemiology of primary headache disorders in sub-Saharan Africa. We performed a population-based survey in Zambia using methods previously tested in multiple other countries.METHODS: This cross-sectional survey was conducted by visiting households unannounced, usi
- PMID 25916334
- Effects of a botulinum toxin type A injection on the masseter muscle: An animal model study.
- Park SY1, Park YW1, Ji YJ2, Park SW3, Kim SG4.
- Maxillofacial plastic and reconstructive surgery.Maxillofac Plast Reconstr Surg.2015 Feb 24;37(1):10. eCollection 2015.
- BACKGROUND: The aim of this study was to investigate the effect of a botulinum toxin type A (BTX-A) injection in the masseter muscle using electromyography (EMG) in an animal model.METHODS: Ten male adult (>3 months of age) New Zealand white rabbits were used. Muscle activity was continuously re
- PMID 25938091
- Body size and ability to pass through a restricted space: Observations from 3D scanning of 210 male UK offshore workers.
- Stewart A1, Ledingham R2, Furnace G3, Nevill A4.
- Applied ergonomics.Appl Ergon.2015 Nov;51:358-62. doi: 10.1016/j.apergo.2015.06.017. Epub 2015 Jun 23.
- Offshore workers are subjected to a unique physical and cultural environment which has the ability to affect their size and shape. Because they are heavier than the UK adult population we hypothesized they would have larger torso dimensions which would adversely affect their ability to pass one anot
- PMID 26154233
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Related Pictures
★リンクテーブル★
[★]
- 関
- female、glycogen synthase kinase 3 beta、male sex、males、man、men
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- 関
- adult human、adult type
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- 関
- male