Some patients develop ileus, by X - ray, it is caused by vascular compression, the blood vessels is () A: Gastroduodenal arteries and veins B: Superior mesenteric arteries and veins C: Inferior mesenteric arteries and veins D: Proper hepatic artery E: Splenic arteries and veins

The word "hemorrhoids" means _______________. A: excessive secretion of bile B: resembling liver C: enlarged veins in the intestinal tract D: enlarged veins in the anus or lower rectum

Skeletal muscles are always stimulated to contract by: A: arteries. B: hormones. C: nerves. D: veins.

The aortic valve keeps the blood moving from veins to the heart.

Cang Jie wanted to find out the logical relation of the veins when he observed the nature.

”脉体“正确的英文表达 A: Veins B: Faults C: Fractures D: Joints

The cerebral arteries and veins are located in the subarachnoid space. 大脑动脉和静脉位于蛛网膜下腔。

A fly's wings are so thin that its veins show through. A: ones B: shoulder muscles C: ligaments D: lood vessels

房颤时，电脉冲在心房内和心房周围的许多其他部位（异位），通常接近肺静脉根部，随机产生。 A: In atrial fibrillation, electrical stimuli are relayed randomly from many other sites called ectopic sites in and around the auricle, commonly near the roofs of pulmonary veins. B: In atrial fibrillation, electrical impulses are initiated randomly from many other sites called ectopic sites in and around the atria, commonly near the roots of pulmonary veins.

Which of the blood vessels conduct blood away from the ventricles of the heart and lead to the capillaries? A: arteries and veins B: arterioles and venules C: arteries and venules D: arteries and arterioles