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The outer breast consists of a nipple and areola. The tip of the nipple contains several hole openings allowing for milk to flow through during lactation. The areola is the pigmented area around the nipple. It is covered with Montgomery glands that secrete oil to lubricate the nipple and areola.
乳房的外部由乳頭和乳暈組成。乳頭的尖端包含幾個(gè)洞，泌乳的時(shí)候乳汁從這里流出。乳暈是乳頭周?chē)纳爻林鴧^(qū)域。這個(gè)區(qū)域被蒙哥馬利腺覆蓋，它能分泌油類物質(zhì)潤(rùn)滑乳頭和乳暈。
The primary function of female breasts is to produce milk in order to nourish an infant, a process called lactation. The breasts, which are composed primarily of fatty tissue, also contain milk producing glands called lobules. Lobules are connected to the nipple by a network of tubes called milk ducts. The breasts produce milk from water and nutrients removed from the bloodstream.",
女性乳房的主要功能是產(chǎn)生乳汁，哺育嬰兒。這個(gè)過(guò)程叫做授乳。乳房主要由脂肪組織構(gòu)成，其內(nèi)包含能產(chǎn)生乳汁的腺體—乳腺小葉。乳腺小葉通過(guò)叫做乳管的管道網(wǎng)與乳頭相連。乳房從血液中攝取水分和營(yíng)養(yǎng)產(chǎn)生乳汁。
