電大人體解剖學(xué)與組織胚胎學(xué)形成性考核冊(cè)作業(yè)1-4答案-預(yù)覽頁(yè)
【正文】 內(nèi)。 8．簡(jiǎn)述中耳鼓室六個(gè)壁的組成和內(nèi)含結(jié)構(gòu)。 1．腓總神經(jīng)損傷可引起哪些肌群癱瘓 ?病人有何主要表現(xiàn) ? 腓總神經(jīng)在腓骨頸處表淺易受損，損傷后的表現(xiàn)為：小腿前、外側(cè)群肌癱瘓；此時(shí)在小腿后群肌的作用下形成 “馬蹄內(nèi)翻足 ”，同時(shí)伴有小腿前、外側(cè)面及足背的感覺障礙。 （ 1）上行纖維束：薄束和楔束位于后索內(nèi)，由同側(cè)脊神經(jīng)節(jié)發(fā)出的中樞突組成。皮質(zhì)脊髓前束僅見于頸髓和上部胸髓，由同側(cè)大腦皮質(zhì)發(fā)出的纖維形成，纖維逐節(jié)交叉后再止于對(duì)側(cè)的前角運(yùn)動(dòng)神經(jīng)元。 腦脊液由側(cè)腦室的脈絡(luò)叢產(chǎn)生，經(jīng)室間孔至第三腦室；與第三腦 室脈絡(luò)叢產(chǎn)生的腦脊液匯合，經(jīng)中腦水管至第四腦室，與第四腦室脈絡(luò)叢產(chǎn)生的腦脊液匯合，再經(jīng)第四腦室正中孔和兩個(gè)外側(cè)孔至蛛網(wǎng)膜下隙，使腦和脊髓被腦脊液所浸泡，可對(duì)它們有營(yíng)養(yǎng)、支持和保護(hù)的作用；腦脊液最后經(jīng)蛛網(wǎng)膜粒滲入上矢狀竇，歸人靜脈。束狀帶細(xì)胞分泌糖皮質(zhì)激素，如可的松等，主要作用能使蛋白質(zhì)及脂肪分解轉(zhuǎn)變?yōu)樘?、抑制免疫反?yīng)和抗炎癥作用。該細(xì)胞為立方形，胞質(zhì)嗜堿性，核圓，位于中央。功能 :濾泡上皮細(xì)胞合成和儲(chǔ)存 T T4，促進(jìn)細(xì)胞氧化和能量代謝，促進(jìn)機(jī)體的生長(zhǎng)發(fā)育。叢密絨毛膜形成絨毛膜板，板上發(fā)出 40～ 60 個(gè)絨毛干。s Phuket island and the Maldives archipelago. Encouraged by growth in Chinese travelers to Indonesia, the government in Jakarta has recently relaxed its visa policy. Since June 10, Chinese tourists can enter Indonesia through nine appointed locations, including the Soekarno Hatta International Airport in Jakarta, the Ngurah Rai International Airport in Bali and the Kuala Namu International Airport in Medan, by just g etting their passports stamped on arrival. Officially, it is called the free visa scheme. The new policy also means Chinese tourists can save $35 on visa fees, which will likely make trips to Indonesia more alluring. While such an arrangement allows Chinese visitors to stay up to 30 days for the purpose of traveling, those seeking extensions will need to get paid visas from that country39。t just for sightseeing, but also for weddings, honeymoons, golf and many outdoor activities, says Fan Wenqing, a marketing executive at Garuda, Indonesia39。t miss. Local cuisines feature many spices, including peppers and cloves, and coconut pulp. Fried rice, dirty duck and roast suckling pig are remended. Children39。s illustration books from the West and Japan. Many young parents in China have a strong nostalgia about children39。s haven, with no less than 4,000 rare birds and animals representing 200 species. With tropical forest covering over 90 percent of its area, the garden offers beautiful views of a wide range of tropical plants, flowers and fruit trees. The scenic spot about 25 kilometers from the center of Haikou offers a drive thru safari tour where you can get up close with elephants, lions and bears. The Safari on Foot area features walking trails where visitors can see the rest of the animals, including hippos and monkeys, and feed them for a small fee. Visitors also can see what happens when you breed a lion and a tiger. Two unique attractions are rare hybrids: a liger, the offspring of a mallion and a female tiger and a tigon, which is created by a female lion and a male tiger. As a teaching center of the National Popular Science Education program, the park also serves as a second classroom for students to learn about wildlife and plants. Since it was established in 1995, it has received more than one million student visitors. At a crucial moment when pessimism has brought the Greek crisis to such a head that the country is closer to a default on its debt repayments than ever, Li offered a spark of enthusiasm to restart the stalled talks by calling on Greece and its creditors to reach a lastminute deal that will allow Greece to remain in the eurozone. Given the escalation of the country39。s bailout program and the European Central Bank capped its emergency support for the country3
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