Digestive System Overview

True (A)

chyme

<p>jejunum</p> Signup and view all the answers

<p>Liver = Secretes bile Pancreas = Secretes pancreatic juices Salivary glands = Secretes saliva Large intestine = Absorbs water and minerals</p> Signup and view all the answers

<p>Gallbladder (C)</p> Signup and view all the answers

<p>False (B)</p> Signup and view all the answers

<p>Increase surface area for absorption</p> Signup and view all the answers

<p>faeces</p> Signup and view all the answers

<p>Insalivation (B)</p> Signup and view all the answers

<p>Teeth (C)</p> Signup and view all the answers

<p>True (A)</p> Signup and view all the answers

<p>Saliva</p> Signup and view all the answers

<p>chyme</p> Signup and view all the answers

<p>Mouth = Mechanical and chemical digestion of food Stomach = Digestion of proteins Small intestine = Nutrient absorption Esophagus = Transport of food to the stomach</p> Signup and view all the answers

<p>Villi (D)</p> Signup and view all the answers

<p>False (B)</p> Signup and view all the answers

<p>Peristaltic movements</p> Signup and view all the answers

<p>duodenum</p> Signup and view all the answers

<p>Cardia (A)</p> Signup and view all the answers

The long tube through which food travels, starting from the mouth and ending at the anus. It involves several organs like the esophagus, stomach, small intestine, and large intestine.

The physical breakdown of food into smaller pieces, often using teeth or muscular contractions.

The process where enzymes break down large food molecules into smaller, simpler substances.

Glands in the mouth that produce saliva, which helps moisten food and starts carbohydrate digestion.

A soft ball of chewed food mixed with saliva, ready to be swallowed.

Wave-like muscular contractions that move food along the digestive tract.

Powerful fluids secreted by the stomach, containing enzymes and acid, that break down food.

Partially digested food that leaves the stomach and enters the small intestine.

Tiny finger-like projections in the small intestine that increase surface area for efficient nutrient absorption.

The first part of the small intestine, where food from the stomach mixes with digestive juices from the pancreas and liver.

Bile is a substance produced by the liver and stored in the gallbladder. It helps break down fats (lipids) by acting as a detergent, emulsifying them into smaller droplets for easier digestion.

The jejunum is the middle section of the small intestine. It's responsible for absorbing most of the nutrients from digested food, aided by villi that significantly increase its surface area.

The pancreas produces pancreatic juices, which are released into the small intestine. These juices contain enzymes that break down carbohydrates, proteins, and fats, and help neutralize stomach acid.

Chyme is a semi-liquid mixture of partially digested food that forms in the stomach and moves into the small intestine.

Chyle is a milky fluid formed in the small intestine after the digestion process, containing water, absorbed nutrients, and undigested waste.

Villi are tiny finger-like projections that line the inner walls of the small intestine. They increase the surface area for absorption of nutrients into the bloodstream.

Mechanical digestion involves breaking down food into smaller pieces through physical processes, such as chewing and churning in the stomach.

Chemical digestion involves breaking down food molecules into smaller units through the action of digestive enzymes found in saliva, gastric juices, and pancreatic juices.

The large intestine absorbs remaining water and minerals from digested food, forms waste products (feces), and prepares them for elimination from the body.

Gut flora refers to the beneficial bacteria that live in the large intestine. They help in breaking down undigested food, synthesizing vitamins, and protecting against harmful bacteria.