cloaca
英
美
n. 下水道，阴沟，泄殖腔
复数：cloacas
COCA.45064
英英释义
noun
- a waste pipe that carries away sewage or surface water
- (zoology) the cavity (in birds, reptiles, amphibians, most fish, and monotremes but not mammals) at the end of the digestive tract into which the intestinal, genital, and urinary tracts open
双语例句
- The Location of Afferent Neurons of the Cloaca and it's Distribution of Afferent Fibers in the Spinal Cord of Chicken
鸡泄殖腔传入神经元的定位及其传入纤维在脊髓内的分布 - Objective: To observe the distribution of nerves containing neuropeptide Y ( NPY) and substance P ( SP) in cloaca wall of Alligator sinensis.
目的：观察含神经肽Y（NPY）、P物质（SP）神经在扬子鳄泄殖腔壁内的分布情况。 - Nocens invaded posterior jejunum, ileum, ceca, rectum and cloaca. Developmental stages were localized within the epithelial cells of villi and crypts and in lamina propria.
nocens寄生于空肠后部、回肠、盲肠、直肠和泄殖腔的绒毛和肠腺上皮细胞及固有膜中。 - Results None of AmpC β-lactamase activity was detected in the wild type of Serratia marcescans 、 Cloaca Enterobacter and hyper-inducible type Serratia marcescans.
结果野生型黏质沙雷菌、阴沟杆菌及高诱导型黏质沙雷菌经头孢他啶筛选后未检测出AmpC酶活性。 - NDV could be detected by RT-PCR in the tracheas of the artificially infected chicken next day, then in the cloaca, spleen and kidney.
利用RT-PCR对NDV人工感染鸡最早可于攻毒后第2天从病鸡气管中检测到NDV，其次为泄殖腔和脾、肾。 - The breathing film was made up of endothelial and endothelial basement membrane. The seawater in respiratory trees through cloaca into center antrum and blood in haemocoel accomplished respiration via this gas-blood barrier.
内皮层与内皮基膜构成呼吸树的呼吸膜，由泄殖腔进入呼吸树中央腔的海水和呼吸树血腔中的血液经此气-血屏障进行气体交换，完成呼吸作用。 - The digestive tracts were divided into cavum oris, esophagus, ventriculus, duodenum, jejunum, ileum, rectum and cloaca.
结果表明：虎纹蛙消化道分为口咽腔、食道、胃、十二指肠、空肠、回肠、直肠和泄殖腔。 - Ducks are regarded as the natural reservoir of influenza viruses, and previous studies indicated that the avian influenza viruses could replicate in the digestive tract of ducks and shed through cloaca without causing any disease signs in these animals.
鸭一直被认为是禽流感病毒的自然宿主，以前的研究发现病毒感染鸭后主要在肠道复制并排泄，但并不引起鸭发病。 - IBD is the unique structure of birds at the top after the cloaca, the wall full of lymphoid tissue.
法氏囊是鸟类特有的结构，位于泄殖腔后上方，囊壁充满淋巴组织。 - The mucosal epithelium of rectum transforms into stratified squamous epithelium abruptly at the end of the rectum. The boundary line between rectum and cloaca was very distinct.
直肠黏膜上皮在直肠末端突然转变为泄殖腔的复层扁平上皮，两者之间界线明显。