What is the Digestive System?
The digestive system and the excretory system are some of the many systems that make the human body fit to its environment.
Which system is affected by digestive disorders?
Hence, the digestive system disorders affect the excretory system, and the excretory system disorders affect the digestive system.
What is the name of the tube that digests food?
Small intestine: The partially digested food from the stomach moves into a long-coiled tube called the small intestine. The wall of the small intestine produces a juice called intestinal juice. The intestinal juice with bile juice and pancreatic juice acts on the partially digested food and converts most of it into liquid type digested food. In addition, the small intestine contains various finger-like projections known as villi. These villi facilities maximum surface area to absorb nutrients from the digested food into the blood capillaries.
Which ducts are accessory to the pancreas?
Pancreas: The accessory pancreatic ducts include two ducts; one is a non-functional duct of Santorini that directly opens into the small intestine. The other is a functional duct known as the duct of Wirsung. The duct of Wirsung and bile duct together form the hepatopancreatic duct that opens into the duodenum region of the small intestine.
What gland secretes sebum?
Skin: The sebaceous gland and sweat gland in the skin secrete sebum and sweat, respectively. Sweat is a watery fluid that contains sodium chloride, small amounts of urea, amino acids, and glucose. Sebum is a waxy protective secretion that contains sterols.
Where does the next step of digestion take place?
Stomach: The next step of digestion takes place in the stomach. The stomach holds up the food for four-five hours. In the stomach, food is mixed with gastric juices by the churning movement of the stomach wall to form chyme. The hydrochloric acid (HCl) in the stomach provides an acidic medium that activates the inactive digestive enzyme pepsinogen into the active enzyme pepsin. Pepsin converts proteins into proteases and peptones. Thus, food is partially digested inside the stomach.
What is the function of kidneys?
Kidneys contain small filtration units known as nephrons. They help remove the unwanted waste material from the blood as urine and return the useful substance to the blood. Urine is made up of urea, water, inorganic salt, and creatinine. Thus, the kidney purifies the blood by forming urine.
How does my digestive system work?
Each part of your digestive system helps to move food and liquid through your GI tract, break food and liquid into smaller parts, or both. Once foods are broken into small enough parts, your body can absorb and move the nutrients to where they are needed. Your large intestine absorbs water, and the waste products of digestion become stool. Nerves and hormones help control the digestive process.
What is the digestive system?
The digestive system is made up of the gastrointestinal tract—also called the GI tract or digestive tract—and the liver, pancreas, and gallbladder. The GI tract is a series of hollow organs joined in a long, twisting tube from the mouth to the anus. The hollow organs that make up the GI tract are the mouth, esophagus, stomach, small intestine, large intestine, and anus. The liver, pancreas, and gallbladder are the solid organs of the digestive system.
How does food move through my GI tract?
Food moves through your GI tract by a process called peristalsis. The large, hollow organs of your GI tract contain a layer of muscle that enables their walls to move. The movement pushes food and liquid through your GI tract and mixes the contents within each organ. The muscle behind the food contracts and squeezes the food forward, while the muscle in front of the food relaxes to allow the food to move.
How does my digestive system break food into small parts my body can use?
As food moves through your GI tract , your digestive organs break the food into smaller parts using:
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. Your blood carries simple sugars, amino acids, glycerol, and some vitamins and salts to the liver. Your liver stores, processes, and delivers nutrients to the rest of your body when needed.
What are the main organs of the digestive system?
The liver, pancreas, and gallbladder are the solid organs of the digestive system. The small intestine has three parts. The first part is called the duodenum. The jejunum is in the middle and the ileum is at the end. The large intestine includes the appendix, cecum, colon, and rectum.
Why is digestion important?
Digestion is important because your body needs nutrients from food and drink to work properly and stay healthy. Proteins, fats, carbohydrates, vitamins. , and water are nutrients. Your digestive system breaks nutrients into parts small enough for your body to absorb and use for energy, growth, and cell repair. .
