窦

In the fourth week, URS divides cloaca into urogenital sinus anteriorly and primitive rectum posteriorly, which communicate with each other to give rise to the cloacal canal.

讨论 传统理论认为，在胚胎第4周，尿直肠隔将泄殖腔分为前后两部分，前者为尿生殖窦，后者为原始直肠。

And cribriform roof is behind it. On endoscope, we can see anterior ethmoid artery is in the insertio of basal lamella of bulla and frontal sinus, in about 2mm range. They are all behind along ostium of frontal sinus and in front of the basal lamella of bulla, from posterolateral skull base to anteromedial skull base.

鼻内镜下，筛前动脉位于筛泡基板与颅底附着处、前后2 mm范围内，沿颅底由后外向前内走行，其行程始终位于额窦开口后缘的后方和筛泡基板的前方。

The agger cells situated at the pathway of the intranasal frontal sinus during surgery and dacryocystorhinostomy, the nasal CT scan might be beneficial to the prevention of surgical complications.

鼻丘为鼻内额窦手术和鼻腔泪囊造口术的进路，可借助鼻窦CT进行术前设计和预防并发症的发生。

Methods In cases of SAP with severe pancreatic and peripancreatic infection, open surgical debridement and drainage was done, and, about one week later, the drainage tubes were removed and a choledoscope was then used repeatedly to debride and wash out the necrotic and infected foci that were hard to drain out.

对于SAP已形成严重胰周感染的患者，在开腹手术清创、引流约1周后，拔除腹腔引流管，顺引流管窦道，插入胆道镜；应用胆道镜对感染灶内难以引流至体外的坏死组织及脓液进行反复冲洗及清除。

Results Dental CT software and three-dimensional reconstruction can display the overall view of jaw in implantation area; measure the height, width, bone density of the alveolar bone; demonstrate the relationship of alveolar bone and mandibular canal; and depict dentural spatial relation also.

结果 应用Dental软件及3D重建技术可以获得拟种植区颌骨的全景形态，局部牙槽骨的高度、宽度、骨质密度及牙槽骨与下颌管及上颌窦的关系，牙列的空间关系等。

The speed of collagen fiber depositation decrease with aging.

窦房结在衰老过程中胶原纤维的沉积速度减慢

In the case of a dermoid sinus, this separation has not fully taken place.

而皮窦患犬发育时，分离不完全。

Dermoid sinus is a genetic, autosomal skin condition in dogs.

皮窦是一种犬类的常染色体遗传病。

A dermoid sinus is rare in dogs and cats.

皮窦少发于犬猫。

Others believe that the dermoid sinus condition is more appropriately characterized as polygenic, involving multiple genes.

另外一些人认为，皮窦是多基因相关疾病。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。