th
Fill in the blanks :
1. Saliva is secreted by the ......
glands.
2. The largest gland in the human body is
HVER
Chewing of food is a DASH......... process.
4. The finger like projections present on the inner wall of the small intestine are cal
3.
5. Pancreas secretes..
juices in the small intestine.
6. Bile juice is stored in the
7. Amoeba digests its food in the .......
8. Grinding of food by the teeth is called
9.
Removal of undigested food from the body is called
10. The four chambered stomach of the grass eating animals is ca
State whether true (T) or false (1):
1.
Total number of canine in an adult is 8.
Answers
1.Salivary glands: The salivary glands make saliva and empty it into your mouth through openings called ducts. Saliva helps with swallowing and chewing. It can also help prevent infections from developing in your mouth or throat. There are two types of salivary glands: the major salivary glands.
2.Liver: The liver is an organ only found in vertebrates which detoxifies various metabolites, synthesizes proteins and produces biochemicals necessary for digestion and growth. In humans, it is located in the right upper quadrant of the Abdomen, below the Diaphragm.
3.Mechanical Digestion: Mechanical digestion involves physically breaking the food into smaller pieces. Mechanical digestion begins in the mouth as the food is chewed. Chemical digestion involves breaking down the food into simpler nutrients that can be used by the cells. Chemical digestion begins in the mouth when food mixes with saliva.
4.Villi: Intestinal villi (singular: villus) are small, finger-like projections that extend into the lumen of the small intestine. Each villus is approximately 0.5–1.6 mm in length (in humans), and has many microvilli projecting from the enterocytes of its epithelium which collectively form the striated or brush border. Each of these microvilli are about 1 µm in length, around 1000 times shorter than a single villus. The intestinal villi are much smaller than any of the circular folds in the intestine.
5.Trypsin: Trypsin (EC 3.4.21.4) is a serine protease from the PA clan superfamily, found in the digestive system of many vertebrates, where it hydrolyzes proteins.[2][3] Trypsin is formed in the small intestine when its proenzyme form, the trypsinogen produced by the pancreas, is activated. Trypsin cuts peptide chains mainly at the carboxyl side of the amino acids lysine or arginine. It is used for numerous biotechnological processes. The process is commonly referred to as trypsin proteolysis or trypsinisation, and proteins that have been digested/treated with trypsin are said to have been trypsinized.[4] Trypsin was discovered in 1876 by Wilhelm Kühne and was named from the Ancient Greek word for rubbing since it was first isolated by rubbing the pancreas with glycerin.[5]
6.Gallbladder: In vertebrates, the Gallbladder is a small hollow organ where bile is stored and concentrated before it is released into the small intestine. In humans, the pear-shaped gallbladder lies beneath the liver, although the structure and position of the gallbladder can vary significantly among animal species. It receives and stores bile, produced by the liver, via the common hepatic duct, and releases it via the common bile duct into the duodenum, where the bile helps in the digestion of fats.
7.Food Vacuole: The food gets trapped inside food vacuole, into which digestive juices are secreted and convert them into simpler substances. The digested food is then absorbed which is required for growth, maintenance and multiplication. The undigested food is expelled out by vacuole.
8.Mastication: Mastication (chewing), in which food is crushed and mixed with saliva to form a bolus for swallowing, is a complex mechanism involving opening and closing of the jaw, secretion of saliva, and mixing of food with the tongue.
9.Elimination: Elimination describes removal of undigested food contents and waste products from the body. While most absorption occurs in the small intestines, the large intestine is responsible for the final removal of water that remains after the absorptive process of the small intestines.
10.Ruminants: Ruminants are herbivorous mammals that are able to acquire nutrients from plant-based food by fermenting it in a specialized stomach prior to digestion, principally through microbial actions. The process, which takes place in the front part of the digestive system and therefore is called foregut fermentation, typically requires the fermented ingesta (known as cud) to be regurgitated and chewed again. The process of rechewing the cud to further break down plant matter and stimulate digestion is called rumination.
•Total number of Canine in an adult is [4] So the Statement is false.