Digestive System Flashcards
Stomach Location and function
On the left side of the upper abdomen
The stomach receives food from the esophagus. As food reaches the end of the esophagus, it enters the stomach through a muscular valve called the lower esophageal sphincter.
holds food
Stomach Tissues and tissue roles
Muscle tissue: helps stomach contract, which aids in digestion
Nervous tissue in the submucosa monitors the contents of the stomach and controls smooth muscle contraction and secretion of digestive substances.
epithelial: for secretion and absorption
Connective tissue: submucosa is a thick layer of loose connective tissue
Stomach structure
The stomach secretes acid and enzymes that digest food. Ridges of muscle tissue called rugae line the stomach. The stomach muscles contract periodically, churning food to enhance digestion. The pyloric sphincter is a muscular valve that opens to allow food to pass from the stomach to the small intestine.
Liver location and function
- The liver is located in the upper right-hand portion of the abdominal, beneath the diaphragm, and on top of the stomach, right kidney, and intestines.
- Produces bile which breaks down fats and detoxifies harmful substances (converts them into useful chemicals).
- The liver regulates most chemical levels in the blood.
- It removes toxins from the body’s blood supply, maintains healthy blood sugar levels, regulates blood clotting
Liver tissue and its roles
- Connective: protects the liver and holds it in place within the abdomen. Makes liver smooth and soft
- Muscle: smooth (moves blood through it)
- Nervous tissue
- Epithelial
Liver structure
- The liver has two large sections, called the right and the left lobes. The lobes are separated by the falciform ligament, a band of tissue that keeps it anchored to the diaphragm.
- Its shape allows it to sit comfortably on top of the gallbladder and stomach, allowing it to do its job properly.
- Shape gets bigger as it extends out. Size symbolizes how vital it is.
- Has to be big but fit
