Biology questions.....please help?

Question

hi. i really need the answers to these folowing questions in less than 15hours.

.what are the alternative names for the alimentry canal.

.how is food moved along the alimentry canal.

.what is gastric juice.

.what is chyme.

.what are carbonhydrates made of

.what is dietry fibre and what foods is it found in.

please try your best to answer these in less than 15 hours.
thank you!!!

Answer 1

Best Answer - Chosen by Asker

1.) mouth, pharynx, esophagus, stomach, small intestine, and large intestine

2.) mucus and muscle contractions push the food and lubricate it's journey.

3.)gastric juice, thin, strongly acidic (pH varying from 1 to 3), almost colorless liquid secreted by the glands in the lining of the stomach. Its essential constituents are the digestive enzymes pepsin and rennin (see rennet), hydrochloric acid, and mucus.

4.) The partially digested mass of food pushed into the smal intestine

5.) sugar

6.) Dietary fibers are the indigestible portion of plant foods that move food through the digestive system, absorbing water and easing defecation.

Fruits, broccoli cereal nuts

Source(s):

google and wikipedia

Asker's Rating:

Asker's Comment:

thank you for your answer it really helped!!!

Answer 2

The alimentry canal is a term used for the whole digestive system.
One of the main mechanisms for moving food through this system is Peristalsis.
Gastric juice is the acidic juice secreted by the stomach.
Chyme is the name of the substance that is formed by all the digestive efforts of the stomach.
Carbon, hydrogen and oxygen make up Carbohydrates.
Dietry fibre is roughage used to add bulk to food and aid digestion and movement through the intestines. Found in startchy foods such as bread and potatoes.

Answer 3

1.In real life, the alimentary canal consists of the mouth, pharynx, esophagus, stomach, small intestine, and large intestine. In adults, the alimentary canal is about 30 feet long.

Other names for the alimentary canal include the gastrointestinal (GI) tract, digestive tract, alimentary tract, and nourishment canal.

2. peristalsis rythmic motion pushing food slowly through system

3. gastric juice is in the stomach made up of highly acidic chemicals. pH ranges from 1-3.

4. is partially digested food that is pushed through the pyloric valve into the small intestine from the stomach

5.they are made up of two parts sugar and a hydrocarbon. they are broken down for energy for the body.

6. dietary fiber is the parts of food our bodies don't / can't break down. this fiber remains intact and travels throughout the digestive system pushing other food items. Alot of the fiber is plant products like cellulose and lignin which make up strong plant walls. Eat bran, whole grains, nuts, green beans, and definently celery.

Hope those help since you needed them quick. Ryan

Answer 4

In addition to one part of the previous answer about carbohydrate...

Carbohydrates are made up of sugars. They are classified by the number of sugar units. Examples: 1 sugar is called a monosaccharide, this would include glucose and fructose
2 sugars are disaccharides, like sugrose and lactose
Then there are more complex ones like polysaccharides. These ones are starch, glycogen and cellulose.
Hope that helps!

Answer 5

1. mouth, pharynx, esophagus, stomach, small intestine and large intestine
2. muscles of the digestive system move food along the alimentry canal via a process called peristalsis
3. gastric juice is a strong acidic liquid produced by the hormone gastrin. gastric juices are primarly pepsin, rennin, hydrochloric acid and mucus, these help to digest food in the stomach (putting this very simply)
4. chyme is the partially digested food in the stomach that is passed into the small intestine for further digestion to begin
5. Carb are made up of sugar units and the number of sugar units each carb is made up of determines whether it is a simple or complex sugar


sounds like you need this for school, if you need more details, just google your questions and you can get a ton of information on all these subjects


good luck

Answer 6

1) Alternative name is Digestive Tract

2) for this visit the link: http://en.wikipedia.org/wiki/Alimentary_…

3) Gastric juice is a strong acidic liquid, pH 1 to 3 in humans, which is close to being colourless. The hormone gastrin is released into the bloodstream when peptides are detected in the stomach. This causes gastric glands in the lining of the stomach to secrete gastric juice. Its main components are digestive enzymes pepsin and rennin, hydrochloric acid, and mucus. [1]

4)Chyme is the semifluid mass of partly digested food expelled by the stomach into the duodenum. [1]

Also known as Chymus, is the liquid substance found in the stomach before passing through the pyloric valve and entering the duodenum. It results from the mechanical and chemical breakdown of a bolus and consists of partially digested food, water, hydrochloric acid, and various digestive enzymes. Chyme slowly passes through the pyloric sphincter and into the duodenum, where the extraction of nutrients begins. Depending on the quantity and contents of the meal, the stomach will digest the food into chyme anywhere between 40 minutes and a few hours.

With a pH of around 2, chyme emerging from the stomach is very acidic. To raise its pH, the duodenum secretes a hormone, cholecystokinin (CCK), which causes the gall bladder to contract, releasing alkaline bile into the duodenum. The duodenum also produces the hormone secretin to stimulate the pancreatic secretion of large amounts of sodium bicarbonate, which raises the chyme's pH to 7 before it reaches the ileum. As it is protected by a thick layer of mucus and utilizes the neutralizing actions of the sodium bicarbonate and bile, the duodenum is not as sensitive to highly acidic chyme as the rest of the small intestine.

At a pH of 7, the enzymes that were present from the stomach are no longer active. This then leads into the further breakdown of the nutrients still present by anaerobic bacteria which at the same time help to package the remains. These bacteria also help synthesize Vitamin-B and Vitamin-K.

5) for carbohydrates visit the link below : http://en.wikipedia.org/wiki/Carbohydrat…

6)Dietary fibers are the indigestible portion of plant foods that move food through the digestive system, absorbing water and easing defecation. Dietary fiber consists of non-starch polysaccharides such as cellulose and many other plant components such as dextrins, inulin, lignin, waxes, chitins, pectins, beta-glucans and oligosaccharides. The term "fiber" is somewhat of a misnomer, since many of the so-called dietary fibers are not fibers at all. The term has largely taken over the role of the older term "roughage".

for more details visit the link:
http://en.wikipedia.org/wiki/Dietry_fibr…

u will the get the sources of fibre in this link only