首页
登录
职称英语
Previously, the sack-like rabbit appendix was thought to serve primaril
Previously, the sack-like rabbit appendix was thought to serve primaril
游客
2024-01-11
19
管理
问题
Previously, the sack-like rabbit appendix was thought to serve primarily as
a reservoir for the bacteria involved in hindgut fermentation, a explanation
that failed to account for the absence of an appendix in other animals with
similar digestive systems or for its presence in humans. Microscopic research
(5) revealed that the appendix contains a significant amount of lymphoid tissue,
similar aggregates of which tissue occur in other areas of the gastrointestinal
tract. These are involved, possibly, in the body’s ability to recognize foreign
antigens in ingested material, but the evidence is inconclusive, to the extent
that scientists have long discounted the human appendix as a "vestigial" organ.
(10) However, a growing body of evidence suggests that the appendix, far from
being a "vestigial organ", hag a significant function as a part of the body’ s
immune system. The appendix achieves its greatest development shortly after
birth, when immune response is first developing, then regresses with age,
when the immune response mediated by the appendix may relate to such
(15) inflammatory conditions as ulcerative colitis, which in adults necessitates the
organ’ s surgical removal.
选项
A、After laboratory experiments, scientists discover evidence to reject the notion hat the human appendix is a "vestigial" organ.
B、Certain animal species which had not previously been given attention are to possess an appendix resembling that of humans.
C、Lymphoid tissue is discovered, after careful study, not to play a role in the recognition of foreign antigens in ingested material.
D、After re-examination of the evidence, ulcerative colitis is discovered to be caused by factors wholly unrelated to the human appendix.
E、It is discovered that in rabbits, hindgut fermentation does not require the presence of an organ acting as reservoir for bacteria.
答案
A
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3354460.html
相关试题推荐
Anthropologistsoncethoughtthattheancestorsofmodernhumansbegantowalku
Anthropologistsoncethoughtthattheancestorsofmodernhumansbegantowalku
Anthropologistsoncethoughtthattheancestorsofmodernhumansbegantowalku
Wovenbasketscharacterizedbyaparticulardistinctivepatternhavepreviously
Archaeologistshavelongthoughtthatanartifactcalledthepemchintwasusedb
Thereare5dogs,3cats,2rabbits,and1deerinFarmY.Nowiftheyarearran
Themonarchandhisfollowersthoughtofthecourtas______howthekingdomoug
IMPUDENT:A、thoughtfulB、convincingC、developedD、methodicalE、deferentialE
Sheisso______,itisinconceivablehowsheisgenerallythoughttobe______
ARTLESSNESS:A、impartialityB、forethoughtC、slynessD、innovationE、bitternessC
随机试题
[audioFiles]audio_eufm_075(20101)[/audioFiles]A、Inthestudent’sownwords.B、I
根据《期货从业人员管理办法》,中国期货业协会制定期货从业人员自律管理的具体办法,
我国公司获得利润的分配顺序为()。 ①提取法定盈余公积②提取任意盈余公积
在电子数据审计中,审计人员对于从被审计单位采集的格式不一致的数据,可以进行的操作
一成人因车祸造成胸部严重创伤,肋骨骨折,有反常呼吸,送至医院心跳已停止,抢救应A
下列方法不可以用来检验回归方程显著性的是()。 A.相关系数法。对于给定的显
气的运动而产生的各种变化称为A.气机 B.气化 C.气逆 D.气脱
道路用石灰稳定土的石灰剂量是指石灰干重占()的百分率。A、干石灰土重 B、石灰
(2015年真题)对岩石钻孔作业难度和定额影响较大的矿物成分是()。A.云
某施工企业需要从银行借款200万元,期限1年,有甲、乙、丙、丁四家银行愿意提供贷
最新回复
(
0
)