Lesson 5A (Part 1) Flashcards
What is the gastrointestinal tract comprised of? (5)
- Mouth
- Pharynx
- Esophagus
- Stomach
- Small/large intestines
How many sections is the pharynx divided into?
3
Where does the esophagus lay compared to the trachea?
Posterior
Where does the esophagus extend from?
From the cricoid cartilage to the stomach
Where is the esophagus compared to the aorta?
To the right of it
What happens to the esophagus at T7?
It moves to the left and passes anterior to the aorta to the stomach
What happens to the esophagus at T10?
It penetrates the diaphragm
- esophageal hiatus
Esophageal hiatus
Opening in the diaphragm through which the esophagus passes
What is the right margin of the esophagus continuous with?
The lesser curvature of the stomach
What is the left margin of the esophagus separated from the fundus by?
The cardiac notch
Where does the terminal portion of the esophagus enter?
The stomach at the cardiac orifice
Cardiac orifice
The opening of the esophagus into the stomach
What is another word for the cardiac orifice?
Esophageal gastric junction
- EGJ
What does the lower esophageal sphincter do? (2)
- Slows the passage of food into the stomach
2. Prevents reflux
Why is it that after the cricoid cartilage (ring shaped) does the trachea become U shaped?
To allow movement of food
What quadrant does the stomach lay?
Upper left quadrant
Where is the lesser curvature of the stomach?
Directly medial and superior to the stomach
Where is the greater curvature of the stomach?
Directly lateral and inferiorly to the stomach
What are the 4 main parts of the stomach?
- Cardia
- Fundus
- Body
- Pylorus
What 2 parts make up the pylorus?
- Antrum
2. Canal
What supplies the stomach with blood? (3)
- Left gastric artery
- Splenic artery
- Common hepatic artery
What does the left gastric artery supply? (2)
- The lesser curvature
2. Part of the fundus
What does the splenic artery supply? (2)
- Lateral fundus
- through short gastric arteries - Greater curvature
- through left gastro-epiploic artery
What does the common hepatic artery supply?
Greater curvature
- through right gastric artery and right gastro-epiploic artery
