0
Digestive System
Digestive System is the category for questions regarding the breakdown and absorption of food-stuffs in our alimentary canal. Questions about the stomach and intestines can be included in this category.
7,599 Questions
An arthropod's digestive system is usually divided into three regions called the?
foregut, midgut and hindgut.
What starts the breakdown of starch?
Saliva is the first thing that breaks down the starch. In fact, the most important part of starch digestion occurs in the mouth, so chew your complex carbohydrates (starch), very well!
Where are fats and oils digested in the digestive system?
Fat taken in the diet is digested in the Small Intestine with the aid of Bile acids and salts which act as emulsifiers and break down the larger fat droplets into smaller ones. These are then acted upon by "lipases" which are secreted in the intestinal digestive. juices. Ultimately the fats are converted into Fatty acids and Glycerol. These are then absorbed in the form of "chylomicrons (small packages of fat and protein)" into the lymphatic channels via the lacteals and poured into the blood.
From here chylomicrons are taken to liver and converted into cholesterol and other forms of fats which are transported to other parts of the body in the form of VLDL, LDL, IDL and HDL.
How does decrease in saliva affect an older person's appetite?
As people age, one of the things that happen to their fluids, especially those produced by exocrine glands, is that it is produced in lesser volumes. As a result their senses of smell and taste seem to diminish. That is one reason why elderly people either loose interest in eating or get undernourished, or they crave spicier food. In some cases their appreciation for food may even increase for no apparent reason other than maybe their lives have less stress and so their body actually produces more saliva.
What is the major organs of dygestive system?
Mouth, pharynx, esophagus, stomach, small intestine, large intestine, rectum, anus.
Digestive enzymes can be found in which organelle?
Lysosomes contain hydrolytic digestion enzymes. Lysosomes are membrane- bounded vesicles produced by the Golgi apparatus. When lysosomes are fused with macromolecules brought into the cell by vesicle formation at the plasma membrane, then the contents are digested by lysosome enzymes into simpler subunits that then enter the cytoplasm.
How does the mouth digest food?
Mechanical digestion is the process by which food is broken up into smaller pieces without the use of enzymes or chemicals. In the mouth, this mechanical digestion is performed by teeth, which grind up food into many small pieces that can then be swallowed.
Mechanical digestion in the mouth is also accompanied by the chemical digestion performed by saliva.
What systems interact with the digestive system?
actually the skeletal system and nervous system work with the digestive system
Can indigestion make your heart flutter?
No. Indigestion generally has no effect on the heart whatsoever. The sensations caused by indigestion can feel very much like a "heart flutter", however. In fact, it can sometimes be difficult for a physician to differentiate between the two without further testing.
If you are concerned that you may be experiencing heart flutter, I would recommend seeing your doctor for an EKG (electrocardiogram) at the very least, to rule out any sort of heart problem.
Why do males lower abdominals get bloated?
Fat builds up around the omentum and stomach rather than around the thighs and buttox of women.
What are some organs of the digestive system?
mouth, esophagus, stomach, small intestine, and the large intestine are some.
Can carnivores digest cellulose?
No
Humans are unable to digest cellulose because the appropriate enzymes to breakdown the beta acetal linkages are lacking. (More on enzyme digestion in a later chapter.) indigestible cellulose is the fiber which aids in the smooth working of the intestinal tract.
Animals such as cows, horses, sheep, goats, and termites have symbiotic bacteria in the intestinal tract. These symbiotic bacteria possess the necessary enzymes to digest cellulose in the GI tract. They have the required enzymes for the breakdown or hydrolysis of the cellulose; the animals do not, not even termites, have the correct enzymes. No vertebrate can digest cellulose directly.
One of the comments indicated the reader is confused as to whether termites have the necessary enzymes to digest cellulose. The answer indicates, correctly, that they do not have the enzymes (innately). Instead, they have a symbiotic relationship with a bacteria that provides the needed enzymes. In other words, they have them, but only because a friendly organism supplies them with them.
Reference: http://www.elmhurst.edu/~chm/vchembook/547cellulose.html
false
How does the skeletal system and the digestive system connected?
obviously haveing a digestive system does not mean your skeletal system will malfunction nor vice versa, or else you would be dead. They are therefore compatible.
What are the stages of the digestive system?
there are 6 stages of Digestion:
1. Ingestion (eating the food)
2. Mechanical Digestion (you digest the food yourself; having control of the digestion, the food not changing substance just simply breaking down)
3.Chemical Digestion (eg: saliva breaks down starch... creating a new substance and having little control over the digestion)
4. Absorption (happens int he stomach)
5. Assimilation (happens in the duodenum)
6. Elimination (toilet time)
hope that helps :D
Why does the enzyme salivary amylase will act on starch but not on protein?
Because the enzyme salivary amylase lacks protein.
Plants do not need digestive system like us.why do they need digestive system?
A digestive system like what you're referring to is only found in animals. In order for animals to survive they have to eat. This consists of either plants or other animals in order to get the energy and nutrients that they require to live. Plants on the other hand, generate their own energy. They use water and various nutrients from the soul along with chlorophyll and sunlight in order to grow. The combination of these factors in a chemical reaction creates the energy that they need. Therefore, they don't have a digestive system like that which you are referring to.
Does a planarian have a one way or two way digestive system?
Planarians are classified underneath the flatworm phyla, and flatworms have two way digestive systems.
What creates the taste of spicy on the tongue?
Spiciness is not a taste. It is caused by capacsin activating the same nociceptors responsible for the sensation of the pain when burnt.
Where is digestion held in the Monera Kingdom?
Digestion is extracellular (outside the cell) and nutrients are absorbed into the cell.
Which of these digestive enzymes are active under strongly acidic conditions?
We need more information as to which enzymes you are asking about.
