Emésztőrendszer: Gyomor és Vékonybél

Study Notes

Stomach

The stomach is a hollow organ located below the diaphragm
Function: stores food
Parts: cardiac region, fundus, body, pylorus, greater and lesser curvature
Capacity: Maximum capacity is about 1 litre, Ideal about 2 litres
Stomach acid: pH is acidic (about 1.5-3.5)
Stomach acid contents: contains water, digestive juices, and hydrochloric acid
Muscle contractions: smooth muscle contractions (peristalsis) break down food further
Function of stomach: protein, carbohydrates and fat breakdown

Small Intestine

Length: about 5 meters long
Parts: duodenum, jejunum, ileum
Sections: Duodenum, Ileum, Jejunum
Plicae: The inner surface is lined with folds, called plicae circularis, that increase the surface area for digestion and absorption.
Villi: Tiny finger-like projections called villi further increase the surface area.
Microvilli: Tiny projections on the surface of the villi further increase the surface area.
Function: further digestion and absorption of nutrients

Large Intestine

Length: about 1.5 meters long
Sections: cecum, ascending colon, transverse colon, descending colon, sigmoid colon, rectum
Function: absorb water and electrolytes into the blood; form and store feces
Feces: undigested food material
Importance: the remaining water & electrolytes are absorbed and feces is stored in the rectum for elimination

Accessory Organs

Pancreas: aids in digestion, produces digestive enzymes, which break down proteins, carbohydrates and fats
Liver: produces bile which aids in fat digestion
Gallbladder: stores and concentrates bile
Role of bile: important for the digestion and absorption of fats.

Digestion Summary

Digestion: 4-6 hours
Absorption: 2-3 hours

Description

Ez a kvíz a gyomor és a vékonybél anatómiájáról és működéséről szól. Fedezd fel a gyomor részeit, kapacitását és a bél funkcióit, valamint azok fontos szerepét az emésztésben. Ideális a biológia órákhoz és a dietetikai tanulmányokhoz.