Table of Contents
- 1 Where does most chemical absorption occur?
- 2 Which cells are for absorption?
- 3 Where is storage of bile?
- 4 Where is the microvilli located in a cell?
- 5 What organs are involved in absorption?
- 6 What organ is the main site of absorption of water?
- 7 What happens to the food absorbed by the digestive system?
- 8 Why do all the cells in your body need oxygen?
Where does most chemical absorption occur?
The small intestine
The small intestine is the site of most chemical digestion and almost all absorption. Chemical digestion breaks large food molecules down into their chemical building blocks, which can then be absorbed through the intestinal wall and into the general circulation.
Which cells are for absorption?
The mechanical and digestive processes have one goal: to convert food into molecules small enough to be absorbed by the epithelial cells of the intestinal villi.
Where does chemical digestion take place?
The majority of chemical digestion occurs in the small intestine. Digested chyme from the stomach passes through the pylorus and into the duodenum. Here, chyme will mix with secretions from both the pancreas and the duodenum.
Where does absorption take place?
small intestine
Absorption. The simple molecules that result from chemical digestion pass through cell membranes of the lining in the small intestine into the blood or lymph capillaries. This process is called absorption.
Where is storage of bile?
About 50% of the bile produced by the liver is first stored in the gallbladder. This is a pear-shaped organ located directly below the liver. Then, when food is eaten, the gallbladder contracts and releases stored bile into the duodenum to help break down the fats.
Where is the microvilli located in a cell?
Microvilli are finger-shaped plasma membrane protrusions that are found at the surface of a large variety of cell types but are most numerous and elaborated on simple epithelial, for example intestinal mucosa and the epithelium of the kidney proximal tubule.
Which organ absorbs the most water?
The small intestine, at around 20 feet long, is the organ primarily responsible for water absorption through its walls and into the bloodstream.
Which is an example of chemical digestion?
Chemical digestion breaks down different nutrients, such as proteins, carbohydrates, and fats, into even smaller parts: Fats break down into fatty acids and monoglycerides. Nucleic acids break down into nucleotides. Polysaccharides, or carbohydrate sugars, break down into monosaccharides.
What organs are involved in absorption?
The jejunum and ileum lower in the intestine are mainly responsible for the absorption of nutrients into the bloodstream. Contents of the small intestine start out semi-solid and end in a liquid form after passing through the organ. Water, bile, enzymes and mucus contribute to the change in consistency.
What organ is the main site of absorption of water?
The majority of water’s absorption into the bloodstream occurs after water passes through the stomach and into the small intestine. The small intestine, at around 20 feet long, is the organ primarily responsible for water absorption through its walls and into the bloodstream.
How does the small intestine store the nutrients it absorbs?
The small intestine absorbs most of the nutrients in your food, and your circulatory system passes them on to other parts of your body to store or use. Special cells help absorbed nutrients cross the intestinal lining into your bloodstream. Your blood carries simple sugars, amino acids, glycerol,…
How does the acquired immune system protect the body?
The acquired immune system, with help from the innate system, produces cells (antibodies) to protect your body from a specific invader. These antibodies are developed by cells called B lymphocytes after the body has been exposed to the invader.
What happens to the food absorbed by the digestive system?
What happens to the digested food? The small intestine absorbs most of the nutrients in your food, and your circulatory system passes them on to other parts of your body to store or use. Special cells help absorbed nutrients cross the intestinal lining into your bloodstream.
Why do all the cells in your body need oxygen?
Every cell in your body needs oxygen to help it metabolize (burn) the nutrients released from food for energy. You also know that you need food. Cells that do the same job combine together to form body tissue, such as muscle, skin, or bone tissue.