What is the pronunciation and meaning of "Dou"?

Meaning: point, point: dog sinus. ? Sinus: the concave part of some organs or tissues of human body. Sinus node? Clue: doubt. Sinus of evil

Pronunciation: dü u

Stroke order: Division, Li, Pi, Li, Li, Li, Li, Li, Li, Li, Li, Li.

Combination words: Doubt sinus, Tian sinus, Jing sinus, Dou Jin, Gui sinus, Qiao sinus, Dou Shu, trunk sinus, trunk sinus and sinus tract.

Background: Sinus is empty. -"Shuo Wen"

Through the sinus pit. -"The Book of Rites and the Moon Order". Note: "Go into the ground and say sinus."

Follow the big sinus of human feelings -The Book of Rites. Note: "Confucius also."

In the prison of punishments, there are three or four in from ruin. -Fang Qing Bao's prison miscellaneous notes?

Make sentences:

1. Sinus node is located at the junction of superior vena cava and right atrium.

2. Urine can flow out of the body through one or several skin sinuses.

3. With the increase of age, sinus arrhythmia tends to disappear.

4. Children with ethmoiditis are often complicated with orbital cellulitis and abscess.

5. They will block the passage of airway or sinus and cause all kinds of pain.

6. Excessive sympathetic nerve impulse is the most common cause of sinus tachycardia.

7. Compressing carotid sinus during atrial flutter has little effect on atrial rate.

8. The electrical pulse from the sinoatrial node propagates to the myocardium to trigger the heartbeat.

9. Cell colonies in the central area of sinoatrial node all exist around the sinoatrial node artery.

10 acute sinusitis is often caused by acute respiratory infection with viral etiology.

1 1. All parties have presented facts and figures, and all parties are entangled in doubts.