Esphageal sphincters and constrictions Flashcards
1
Q
Upper sphincter is also known as
A
Anatomical sphincter
2
Q
Lower sphincter is also known as
A
physiological sphincter
3
Q
Which sphincter prevents gastric reflux
A
Physiological sphincter
4
Q
which sphincter is formed by the cricopharyngeal muscle
A
Anatomical sphincter
5
Q
Physiological sphincter is maintained by four(4) factors which are
A
- Esophagus enters the stomach at acute angle
- positive intra abdominal pressure
- prominent mucosal folds
- Right Crus of Diaphragm which ensures pinch code effect
6
Q
How many constrictions does esophagus have
A
4
7
Q
Name the constrictions corresponding to the following distance from the incisors
1. 5 in /15 cm
2. 9 in /22 cm
3. 11 in / 27cm
4. 15 in / 40cm
A
- Cricoid cartilage or cervical constriction
- Arch of aorta constriction
- Bronchial constriction
- Diaphragmatic constriction at the level of T10.
8
Q
Diaphragmatic constriction is at the level of
A
T10
