digestive system Flashcards
what is mechanical digestion?
Mechanical digestion involves physically breaking down food substances into smaller particles to more efficiently undergo chemical digestion. The role of chemical digestion is to further degrade the molecular structure of the ingested compounds by digestive enzymes into a form that is absorbable into the bloodstream.Sep 18, 2021
what is chemical digestion?
Chemical digestion involves the secretions of enzymes throughout your digestive tract. These enzymes break the chemical bonds that hold food particles together. This allows food to be broken down into small, digestible parts.
what is chyme?
the pulpy acidic fluid which passes from the stomach to the small intestine, consisting of gastric juices and partly digested food.
what are the small intestines?
The small intestine is actually the longest segment of the gastrointestinal tract — the long, continuous pathway that food travels through your digestive system. In the small intestine, food is broken down into liquid and most of its nutrients are absorbed. The waste is passed on to the large intestine.Aug 12, 2021
what is the duodenum?
The duodenum is the first part of the small intestine. It is located between the stomach and the middle part of the small intestine, or jejunum. After foods mix with stomach acid, they move into the duodenum, where they mix with bile from the gallbladder and digestive juices from the pancreas.Oct 10, 2020
what is the jejunum?
The jejunum is one of three sections that make up the small intestine. The small intestine is part of the digestive system and is vital for breaking down and absorbing nutrients. … The jejunum is located between the duodenum and the ileum.
what is the ileum?
The ileum is the final portion of the small intestine, measuring around 3 meters, and ends at the cecum. It absorbs any final nutrients, with major absorptive products being vitamin B12 and bile acids.
what are the large intestines?
The large intestine is the portion of the digestive system most responsible for absorption of water from the indigestible residue of food. … Material passes through the ascending, transverse, descending and sigmoid portions of the colon, and finally into the rectum.Apr 23, 2021
what is the cecum?
Cecum. The cecum is the beginning of the colon. The small intestine feeds into the cecum through a small channel in the side of it (the ileocecal valve), so the end of the cecum is actually closed like a pouch. This pouch, the first 6 inches of the colon, is also the widest portion of the large intestine.Dec 8, 2021
what is the colon?
The colon is also known as the large bowel or large intestine. It is an organ that is part of the digestive system (also called the digestive tract) in the human body. The digestive system is the group of organs that allow us to eat and to use the food we eat to fuel our bodies.
what is the rectum?
rectum, terminal segment of the digestive system in which feces accumulate just prior to discharge. The rectum is continuous with the sigmoid colon and extends 13 to 15 cm (5 to 6 inches) to the anus.
what is the anus?
The anus is part of the. digestive system. Close. digestive system. The group of organs that work together to take in food and liquid, break them down, absorb nutrients and pass waste from the body.
what is the function of large intestines?
Large Intestine (Colon) The large intestine includes the colon, rectum and anus. It’s all one, long tube that continues from the small intestine as food nears the end of its journey through your digestive system. The large intestine turns food waste into stool and passes it from the body when you poop.Dec 8, 2021
what is the Bristol stool chart?
The Bristol Stool Scale is a way to talk about shapes and types of poop, what doctors call stools. It’s also known as the Meyers Scale. The chart is designed to help doctors measure the time it takes for food to pass through your body and leave as waste.Jan 16, 2020
what is the liver?
All the blood leaving the stomach and intestines passes through the liver. The liver processes this blood and breaks down, balances, and creates the nutrients and also metabolizes drugs into forms that are easier to use for the rest of the body or that are nontoxic.
