Bio digestive systems

The organs of the digestive system also produce blood clotting factors and hormones unrelated to digestion, help remove toxic substances from the blood, and chemically alter metabolize drugs.

Bio digestive systems

Bio digestive systems

Excretion Following Food from Mouth to Anus To understand how our food is digested in the digestive system, it might be very useful to follow our food along its normal path, starting from the mouth. Your mouth starts to water.

The salivary glands in your mouth are triggered to start producing saliva, a compound that will aid in the digestion of the meal.

As food enters your mouth, your teeth begin mechanically breaking down the food into small and smaller pieces. The saliva starts to chemically break it down as well. A small flap of skin called your epiglottis makes sure your food goes down your esophagus. Movements of the smooth muscles, known as peristalsis help move that bolus down your esophagus.

When it reaches your stomach, a sphincter opens and dumps the food in. Inside the stomach, cells start to secrete different acids that help increase acidity to a pH of 2.

This strong acidic environment kills most bacteria and starts to chemically break apart the food. Movements of the smooth muscles in the stomach, known as peristalsis mix and churn the food up more.

After the food has been well mixed and has a consistency of oatmeal, it is ready to move to the small intestine. At this stage it is known as chyme.

Science Quiz: Biology: Digestive System

To move into the small intestine, chyme must pass through the pyloric sphincter. From here it enters the duodenum, the first part of the small intestine. The liver mixes in bile, which helps break down fats in the food. The pancreas also secretes digestive enzymes that aid in digestion.

Most of the nutrients are absorbed from the small intestine and moved into the blood stream via a system of small folds, called vili. After the food moves through the small intestine it enters the large intestine. The large intestine is named for the diameter of the cavity and not for the length.

It is actually much shorter than the small intestine. The role of the large intestine is to remove any extra water from the digested material before it is finally excreted. So there you have it — a basic rundown of what happens to the food we eat from the time we eat it, to when we excrete it.

Review our links below for more detailed explanations of the entire process. Digestive System Vocabulary Terms Anus: The function of the anus is to expel feces, and unwanted semi-solid material produced during digestion. The appendix is located near the junction of the small and large intestines.

It is often referred to as the vermiform appendix or cecal appendix. The appendix is thought to be a vestigial structure in humans an organ that has lost its original function. Today the appendix is prone to infection is often removed at the first sign of a problem.

The large intestine can be divided up into different regions.As the word monogastric suggests, this type of digestive system consists of one (“mono”) stomach chamber (“gastric”).

Resources In This Article

Humans and many animals have a monogastric digestive system as illustrated in Figure process of digestion begins with the mouth and the intake of food. Human digestive system, the system used in the human body for the process of digestion. The human digestive system consists primarily of the digestive tract, or the series of structures and organs through which food and liquids pass during their processing into forms absorbable into the bloodstream.

Cholecystokinin (CCK) is a hormone released by the duodenum to signal and stimulate accessory organs for digestive enzymes.

Science Quiz: Biology: Digestive System

Salivary amylase digests starch in the mouth, while pepsin is used to digest . Jan 28,  · Human Digestive System - It is the group of organs that convert food into energy.

They include the mouth, stomach, esophagus, small, and large intestine. The digestive system, which extends from the mouth to the anus, is responsible for receiving food, breaking it down into nutrients (a process called digestion), absorbing the nutrients into the bloodstream, and eliminating the indigestible parts of food from the body.

The digestive system is a series of hollow organs joined in a long, twisting tube from the mouth to the anus. Inside this tube is a thin, soft membrane lining of epithelial tissue called the mucosa. In the mouth, stomach, and small intestine, the mucosa contains tiny glands that produce juices to help digest food.

Test Your Knowledge On The Digestive System! - ProProfs Quiz