Objective:To explore the effects of micro-class combined with closed-loop modularized teaching in practical course of emergency nursing.Methods:From March to July 2018, this study selected nursing students of four classes in Grade 2016 of Xianyang Vocational Technical College as subjects by convenience sampling. All of nursing students were randomly divided into observation group ( n=160) and control group ( n=162) with the method of tossing a coin by classes. Control group carried out the routine teaching, while observation group applied the micro-class combined with closed-loop modularized teaching in practical course of emergency nursing. This study compared the nursing students' examination scores and recognition on teaching model between two groups. Results:At the end of practical course of emergency nursing, the theoretical and operation achievements of observation group were (85.59±7.24) and (88.34±5.62) respectively higher than those of control group with statistical differences ( t=-6.308, -7.008; P<0.05) . Recognition of observation group on teaching model was higher than that of control group also with a statistical difference ( P<0.05) . Conclusions:Micro-class combined with closed-loop modularized teaching can improve the learning effects of nursing students in practical course of emergency nursing and is recognized highly by nursing students which is worthy of generalization and application.

Objective To observe the oral part of the facial artery and facial vein and to provide anatomical data for clinical applica-tion. Methods The origin, branches, course, diameter, position of oral part of facial artery and facial vein were observed on 32 fixed cada-ves (64 sides). Results The position relation between the facial artery and facial vein is non-constant. Measure the distance from inferior border of mandible to corner of the mouth, angulus mandibulae, mental protuberance midpoint. It is (5. 49 ± 0. 63) cm, (2. 50 ± 0. 89) cm and (6. 20 ± 1. 68) cm in the left side respectively, and (5. 69 ± 0. 72) cm, (2. 56 ± 1. 08) cm and (6. 85 ± 1. 86) cm in the right side re-spectively. The diameter of facial artery in inferior border of mandible is (0. 33 ± 0. 08) cm in the left side and (0. 38 ± 0. 07) cm in the right side;while the diameter of facial vein is (0. 40 ± 0. 12) cm in the left side and (0. 42 ± 0. 18) cm in the right side. The facial artery and facial vein are not concomitant and they are not asymmetry also. The position of superior labial artery arteries is constant, but the position of inferior labial artery arteries have more variations. Conclusion The branches, course, diameter and position of oral part of facial artery and facial vein have a number of variations. The superior labial artery arteries could be positioned more easily than inferior labial artery arter-ies. Being familiar with their distribution is of great importance for clinical application.