25 Questions
What is the pH level of the stomach when hydrochloric acid is present?
About 2.0
What is one of the functions of hydrochloric acid in the stomach?
To kill microorganisms
What is activated by hydrochloric acid in the stomach?
Pepsin
What is the primary function of pepsin in the stomach?
To break down proteins
What would happen if there was a lack of hydrochloric acid in the stomach?
The stomach pH would become more alkaline
During which phase are stomach secretions increased in anticipation of incoming food?
Cephalic phase
What is the primary function of the cephalic phase?
Stimulating stomach secretions in anticipation of food
During which phase does most of the stimulation of secretion occur?
Gastric phase
What happens to stomach secretions during the cephalic phase?
They increase
What is the order of the phases?
Cephalic phase followed by gastric phase
What is the role of intrinsic factor in the absorption of vitamin B12?
It makes vitamin B12 more readily absorbed in the small intestine
How much gastric secretion is produced daily?
Approximately 2 L of gastric secretions
What is the first phase of regulation of stomach secretions?
The cephalic phase
What is the last phase of regulation of stomach secretions?
The intestinal phase
What is the name of the fluid produced by the stomach?
Gastric juice
Through which vessels does blood exit the liver?
Hepatic veins
What is the function of the hepatic artery in the liver?
To deliver oxygenated blood to the liver
Into which blood vessel does the hepatic vein empty?
Inferior vena cava
What is the relationship between the hepatic vein and the liver?
The hepatic vein drains blood from the liver
Which of the following is NOT a function of the hepatic vein?
Supplying oxygenated blood to the liver
What is the largest part of the stomach?
The body
In which direction does the body of the stomach turn?
To the right
What is the shape of the pyloric part of the stomach?
Funnel-shaped
What forms from the narrowing of the body of the stomach?
The pyloric part
What is the relationship between the body and the pyloric part of the stomach?
The body narrows to form the pyloric part
Study Notes
Stomach Structure
- The largest part of the stomach is the body, which turns to the right, creating a greater curvature and a lesser curvature.
- The body narrows to form the funnel-shaped pyloric part of the stomach.
Stomach Function
- Hydrochloric acid produces a pH of about 2.0 in the stomach, killing microorganisms and activating the enzyme pepsin.
Vitamin B12 Absorption
- Intrinsic factor binds with vitamin B12, making it more readily absorbed in the small intestine.
Regulation of Stomach Secretions
- Approximately 2 L of gastric secretions (gastric juice) are produced each day.
Phases of Stomach Secretion Regulation
- There are three phases of stomach secretion regulation:
- Cephalic phase: stomach secretions increase in anticipation of incoming food.
- Gastric phase: most of the stimulation of secretion occurs.
- Intestinal phase: no specific details mentioned.
Blood Circulation
- Blood exits the liver through hepatic veins and empties into the inferior vena cava.
This quiz covers the anatomy of the stomach, including its different parts and curvatures. Learn about the body and pyloric part of the stomach. Test your knowledge of human anatomy!
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