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Post a LessonAnswered on 10/04/2024 Learn CBSE/Class 11/Science/Biology/Unit 5: Human Physiology/Chapter 16- Digestion and Absorption
Sadika
The liver is a vital organ with numerous functions essential for maintaining overall health and proper bodily function. Some of the key functions of the liver include:
Metabolism:
Detoxification:
Bile Production:
Storage:
Synthesis of Blood Components:
Immune Function:
Regulation of Hormones:
Overall, the liver plays a central role in numerous physiological processes essential for maintaining homeostasis and overall health, making it one of the most vital organs in the human body.
Answered on 10/04/2024 Learn CBSE/Class 11/Science/Biology/Unit 5: Human Physiology/Chapter 16- Digestion and Absorption
Sadika
In an adult human, there are four main types of teeth, each with a specific function in the process of mastication (chewing) and digestion. These types of teeth and their respective numbers in a typical adult human mouth are as follows:
Incisors: Incisors are the front teeth located in the center of the mouth. They have flat, chisel-shaped edges and are used for cutting and slicing food.
Canines (Cuspids): Canines are the pointed teeth located next to the incisors, one on each side of the incisor teeth. They have a single pointed cusp and are used for tearing and grasping food.
Premolars (Bicuspids): Premolars are located behind the canines and have two cusps on their biting surface. They are used for grinding and crushing food.
Molars: Molars are located at the back of the mouth and have multiple cusps on their biting surface. They are the largest and strongest teeth and are used for crushing and grinding food.
In summary, a typical adult human mouth contains a total of 32 teeth, consisting of eight incisors, four canines, eight premolars, and twelve molars. However, variations in tooth number and morphology can occur due to factors such as dental anomalies, genetics, and dental treatments.
Answered on 10/04/2024 Learn CBSE/Class 11/Science/Biology/Unit 5: Human Physiology/Chapter 16- Digestion and Absorption
Sadika
The terms "thecodont" and "diphyodont" are both related to the dentition (arrangement and development of teeth) of vertebrates, particularly mammals.
Thecodont:
Diphyodont:
In summary, "thecodont" refers to a type of tooth attachment seen in certain reptiles where teeth are set in sockets within the jawbone, while "diphyodont" refers to a tooth replacement pattern seen in most mammals, including humans, where two sets of teeth (deciduous and permanent) are developed during the individual's lifetime.
Answered on 10/04/2024 Learn CBSE/Class 11/Science/Biology/Unit 5: Human Physiology/Chapter 16- Digestion and Absorption
Sadika
The digestion of proteins begins in the mouth and continues through various stages as food travels through the alimentary canal. Here are the main steps in the digestion of proteins:
Mouth:
Stomach:
Small Intestine (Duodenum, Jejunum, and Ileum):
Absorption:
In summary, the digestion of proteins involves the action of various enzymes at different stages of the alimentary canal, including pepsin in the stomach and pancreatic enzymes in the small intestine. Proteins are broken down into peptides, dipeptides, and amino acids, which are then absorbed by enterocytes in the small intestine and transported to tissues for use in various physiological processes.
Answered on 10/04/2024 Learn CBSE/Class 11/Science/Biology/Unit 5: Human Physiology/Chapter 16- Digestion and Absorption
Sadika
Butter is primarily composed of fats, specifically triglycerides, along with small amounts of proteins and water-soluble compounds like vitamins and minerals. The digestion and absorption of butter in the body involve several steps:
Mouth:
Stomach:
Small Intestine (Duodenum, Jejunum, and Ileum):
Absorption:
In summary, the digestion and absorption of butter in the body involve the action of enzymes like gastric lipase and pancreatic lipase, as well as bile salts to emulsify fats. Once broken down into smaller molecules, fats are absorbed by enterocytes in the small intestine and transported throughout the body via chylomicrons for use in energy metabolism and other physiological processes.
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