Skip to main content

Biology notes for class 11 Digestion in Mouth

Biology notes for class 11 Digestion in Mouth

In the following article, the topic “Digestion in Mouth” from the unit Human Physiology of Class 11 Biology (Class 11) is discussed. In the following article, sub topic – Salivary glands and their role in digestion is explained.
DIGESTION IN MOUTH
We eat food by our mouth, inside the mouth; teeth are present that helps in cutting down the food into smaller parts. Further teeth help in chewing (masticate) the food. The broken food material is thoroughly mixed up with the saliva (the first of the digestive juices) and forms a paste like substance. Saliva is produced by the salivary glands present in the mouth. Let’s discuss salivary glands-
SALIVARY GLANDS: The salivary glands in mammals are exocrine glands (glands that pour their secretions by way of a duct) that produce saliva. The saliva breaks down the starch into sugars. There are three pairs of salivary glands;
  • Parotid glands: They lie inside the mouthjust in front of the ears. They are the largest of the salivary glands. Their secretions enter the buccal cavity/ oral cavity (mouth) via the parotid duct or Stensen duct. The parotid glands are serous (producing water like secretions) glands. They produce thin and watery secretions. About 20% of the total salivary content in the oral cavity is produced by the parotid glands. The inflammation of the parotid glands causes parotitis also known as mumps.
  • Submaxillary (submandibular) glands: These glands are located beneath the angles of the lower jaw. Their secretions are released into the mouth through Wharton’s They are the mixed type of glands as they contain cells which produce both serous and mucous type secretions. Even though the submaxillary glands are much smaller than parotid glands, but their secretions contribute approximately 65-70% of saliva in the mouth.
  • Sublingual glands:These glands lie beneath the tongue.They produce mucous secretions.The mucous contains mucin. The secretions reach the oral cavity through a number of ducts called as Rivinius About 5% of the saliva entering the oral cavity comes from these glands.

For more articles, notes, biology class 11, video lectures, NCERT solutions of Class 11 Biology Chemistry/Physics, register with Takshila Learning.Call us : 8800999280/8800999284

Labels:

Comments

Post a Comment

Thank you we will contact ASAP.

Popular posts from this blog

Magnetic and non-magnetic material Class 6 Science

Magnetic and non-magnetic material  Class 6 Science A magnet is a substance that is drawn to certain magnetic materials like iron, cobalt, and nickel. Magnets have the ability to draw iron to them. Natural magnets are rocks that naturally draw iron. Non-magnetic materials include things like wood, rubber, coins, feathers, leather, etc. that are not drawn to iron. Magnet characteristics It pulls magnetic materials, such as iron. The magnet's two ends are referred to as its poles. The magnet's diametrically opposed poles are drawn together. Heating, hammering, or dropping causes it to lose its characteristics. On the basis of properties types of Magnets Temporary magnets are those magnets that are magnetic for only a little duration. Typically, iron, cobalt, or nickel are used to make them. When they are close to the powerful magnet, they act like a magnet. When they are yanked away from the powerful magnet, they stop being magnetic. Permanent magnets are magnets that have magne...
Post a Comment
Read more

CS Executive

At  Takshila Learning  we provide you Video Lecture of best faculties in India. We assure you not only the best quality of videos but also best content. Our teachers way of teaching, presentation and explanation is very simple and unique. Why Takshila Learning? We can give you 10 top reasons why you should take CS Executive Online Video Coaching Classes Lectures from Takshila Learnings. We are providing online classes of CS Executive for last 5 years (almost  oldest in the market ) We pick  best teachers  for every subjects. We don’t provide updates only with old videos. Infact we provide  new updated classes  for every attempt Our teachers update notes for every attempt. Videos and notes are  highly exams oriented . Our teachers  cover last 5 attempts question papers  along with ICSI Course content. Our video classes  includes live practical examples  to help you understand easily. Our structure of our  fee ...
Post a Comment
Read more

Best Sample papers for Bank PO Exam Download

Sample papers for Bank PO Exam | Question Paper for Bank PO : Institute of banking Personnel Selection (IBPS) Department issued a Notification of IBPS PO 2017  exam announced in October month. IBPS Probationary Officer (PO) Online Application Form process will be begin from July 2017. This is a hard exam for all students so aware of its value. Large number of  candidates will participate in this exam. So all candidates should prepare well for it. Check out IBPS, Bank PO Sample papers, Question Paper Pattern, SBI  PO Syllabus ,   IBPS Syllabus  and other IBPS PO Preparation 2017 This paper is identical to any Bank PO Question Paper Pattern. Check whole IBPS Bank “PO question paper” subject wise. IBPS (PO) Paper Pattern Analysis with Syllabus and main topics of IBPS Exam 2017. PO Question Paper Pattern, Bank PO sample Papers for IBPS Bank Exam IBPS PO Exam will be conducted at three levels 1st- PO Preliminary Exam 2nd- PO Mains Exam 3rd- PO Common ...
Post a Comment
Read more