7 Questions
Which two anatomical parts is the stomach divided into?
The body and the antrum
During the storage of food in the stomach, which reflex reduces the tone in the muscular wall?
Vagovagal reflex
Which portion of the stomach does the first two thirds of the body belong to physiologically?
Orad portion
What is the maximum amount of food the completely relaxed stomach can accommodate?
0.8 to 1.5 liters
Which of the following is NOT a motor function of the stomach?
Chemical digestion
Which physiological portion of the stomach includes the remainder of the body plus the antrum?
Caudad portion
What is the semifluid mixture formed in the stomach called?
Chyme
Study Notes
Anatomical Parts of the Stomach
- The stomach is divided into two major parts: the body and the antrum.
- Physiologically, the stomach is divided into the orad portion (first two-thirds of the body) and the caudad portion (remainder of the body plus the antrum).
Storage Function of the Stomach
- When food stretches the stomach, a vagovagal reflex occurs, reducing the tone in the muscular wall of the body of the stomach.
- As a result, the wall bulges outward, accommodating greater quantities of food up to a limit of 0.8 to 1.5 liters in the completely relaxed stomach.
- The pressure in the stomach remains low until this limit is approached.
Motor Functions of the Stomach
- The stomach has two motor functions: storage of food and mixing food.
- The stomach stores large quantities of food until it can be processed in the stomach, duodenum, and lower intestinal tract.
- The stomach mixes food with gastric secretions to form a semifluid mixture called chyme.
Learn about the anatomical parts of the stomach, including the body and antrum, and understand its storage function and physiological divisions.
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
