Write a brief note on. A)Buccal cavity B)Canine. C) Cellulose. D) Digestion. E) Egestion. F) Fatty acid. G) Food vacuole. H) Gall bladder. I) Glycerol. J) Incisor. K) Ingestion. L) Liver. M) Milk teeth. N) Molar. O) Permanent teeth. P) Oesophagus. Q) Pancreas. R) Premolar. S) Pseudopodia. T) Rumen. U) Ruminant. V) Rumination W) Salivary glands X) Villi Y) Saliva
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Answer:
Explanation:
Write a brief note on. A)Buccal cavity B)Canine. C) Cellulose. D) Digestion. E) Egestion. F) Fatty acid. G) Food vacuole. H) Gall bladder. I) Glycerol. J) Incisor. K) Ingestion. L) Liver. M) Milk teeth. N) Molar. O) Permanent teeth. P) Oesophagus. Q) Pancreas. R) Premolar. S) Pseudopodia. T) Rumen. U) Ruminant. V) Rumination W) Salivary glands X) Villi Y) Saliva
Answer:
(A) Buccal cavity (oral cavity) The mouth cavity: the beginning of the alimentary canal, which leads to the pharynx and (in vertebrates) to the oesophagus. In vertebrates it is separated from the nasal cavity by the palate. The buccal cavity between the jaws and the cheeks.
(B)Canine teeth are found in mammals. They are the eye teeth, fangs or dogteeth. They are on either side of the incisors. Their main function is to hold food firmly in order to tear it apart, and also attack and defence.
(C)Cellulose is the main chemical that forms the main structure of plants. It is the most abundant macromolecule on Earth. It is also a fibre. Cellulose is made from a form of glucose and makes up most of the cell wall of plant cells.
(D)Digestion is the process in which breakdown of food from larger to smaller food .
Digestion occurs in two main ways:
- We chew our food, and our teeth break down the food into smaller pieces. ...
- In our stomach, chemicals called “enzymes” change the food into smaller molecules that the body can use.
(E) Egestion is the act or process of voiding or discharging undigested food as faeces. To egest means to discharge undigested material or food.
(F) Molecules that are long chains of lipid-carboxylic acid found in fats and oils and in cell membranes as a component of phospholipids and glycolipids. (Carboxylic acid is an organic acid containing the functional group -COOH.) Fatty acids come from animal and vegetable fats and oils.
(G) Food vacuoles are membrane-bound sacs within a cell, which contain food matter to be digested. These can be thought of as intracellular “stomachs,” where food is stored while it is broken down and its nutrients are extracted.
(H) The gallbladder is a pear-shaped, hollow structure located under the liver and on the right side of the abdomen. Its primary function is to store and concentrate bile, a yellow-brown digestive enzyme produced by the liver. The gallbladder is part of the biliary tract.
(I) Glycerol is a nontoxic, sweet tasting, and viscous fluid that has the chemical formula C3H8O3. It is a polyol, a compound that is made up of more than one hydroxyl group. Its chemical structure consists of three hydroxyl groups, which are -OH groups attached to the carbon atoms.
(J) Incisors are special kinds of teeth that can be found in some mammals, such as humans. They are the eight large flat teeth with straight edges that are at the front of a person's mouth, in between the canine teeth, which are pointed. The straight edges of the incisors are useful for biting because they cut sharply.
(K) Ingestion is the consumption of a substance by an organism. In animals it normally is accomplished by taking in a substance through the mouth into the gastrointestinal tract; such as through eating or drinking. In single-celled organisms ingestion takes place by absorbing a substance through the cell membrane.
(L) 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.
(M) Deciduous teeth – commonly known as baby teeth, milk teeth, temporary teeth, and primary teeth – are the first set of teeth in the growth development of humans and other diphyodont mammals. They develop during the embryonic stage of development and erupt (that is, they become visible in the mouth) during infancy.
(N) The molars or molar teeth are large, flat teeth at the back of the mouth. They are more developed in mammals. They are used primarily to grind food during chewing. The name molar derives from Latin, molaris dens, meaning "millstone tooth", from mola, millstone and dens, tooth.
(O) permanent teeth The second and final set of teeth that mammals produce after shedding the deciduous teeth. An adult human normally has 32 permanent teeth, consisting of incisors, canines, molars, and premolars (see illustration). These usually appear between the ages of approximately 6 and 21 years.
(P) Oesophagus is commonly known as food pipe. It is a muscular tube connecting the pharynx with the mouth. The oesophagus runs behind the wind pipe and heart and in front of spine. Their function is to keep food and secretions from going down the wind pipe
(Q) The pancreas is an organ that makes hormones and enzymes to help digestion. The pancreas helps break down carbohydrates, fats, and proteins. The pancreas is behind the stomach and is on the left side of the human body. The part of the pancreas that makes hormones is called the Islets of Langerhans.