The beginning of the digestive tract where mechanical digestion (chewing) and chemical digestion (salivary amylase breaking down carbohydrates) begin.

A muscular tube that transports food from the pharynx to the stomach using rhythmic contractions called peristalsis.

A muscular organ that uses gastric juices—such as hydrochloric acid and pepsin—to break down proteins and turn food into chyme.

A long, coiled tube made up of the duodenum, jejunum, and ileum where most digestion and nutrient absorption occur.

The first part of the small intestine where chyme mixes with bile and pancreatic enzymes for further chemical digestion.

The middle section of the small intestine with villi and microvilli that increase surface area for nutrient absorption.

The final part of the small intestine responsible for absorbing vitamin B₁₂, bile salts, and remaining nutrients.

The organ that absorbs water and electrolytes from undigested food and forms solid waste (feces).

A major accessory organ that produces bile, detoxifies chemicals, stores nutrients, and helps regulate metabolism.

An accessory organ that releases enzymes to digest carbohydrates, proteins, and fats, and secretes bicarbonate to neutralize stomach acid.

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Study Stack 2

Term	Definition
Mouth	The beginning of the digestive tract where mechanical digestion (chewing) and chemical digestion (salivary amylase breaking down carbohydrates) begin.
Esophagus	A muscular tube that transports food from the pharynx to the stomach using rhythmic contractions called peristalsis.
Stomach	A muscular organ that uses gastric juices—such as hydrochloric acid and pepsin—to break down proteins and turn food into chyme.
Small Intestine	A long, coiled tube made up of the duodenum, jejunum, and ileum where most digestion and nutrient absorption occur.
Duodenum	The first part of the small intestine where chyme mixes with bile and pancreatic enzymes for further chemical digestion.
Jejunum	The middle section of the small intestine with villi and microvilli that increase surface area for nutrient absorption.
Ileum	The final part of the small intestine responsible for absorbing vitamin B₁₂, bile salts, and remaining nutrients.
Large Intestine	The organ that absorbs water and electrolytes from undigested food and forms solid waste (feces).
Liver	A major accessory organ that produces bile, detoxifies chemicals, stores nutrients, and helps regulate metabolism.
Pancreas	An accessory organ that releases enzymes to digest carbohydrates, proteins, and fats, and secretes bicarbonate to neutralize stomach acid.

Created by: user-1990885

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