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Digestion and Absorption 2
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It's the second lecture on Digestion and absorption. Salivary Gland and Teeth have been discussed. Tune in to learn and revise and clarify with fun.

Pranav Pundarik is teaching live on Unacademy Plus

Pranav Pundarik
I teach exactly what you need🎯 Cleared NEET, AIIMS, JIPMER and JEE. Explore the courses, enjoy, understand and excel in Biology❤️

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Diastema is toothless are b/w (a) right and left incisors (b) incisors and molars (c) premolars and molars (d) behind molars it's surely not (d) and (b) but iam confused b/w (a) and (c)
no a
I had a question

  1. Ecto-Mesodermal in origin Attached to maxitla and mandible bone . Natural space between two teeth is DIASJMi


  2. Some important terma: *Dentition: Arrangement of teeth on jaws. **Dentition tybes: > >Monolphyodont ( Jeeth whic appear only once in a life) (Premolar8 and last molar) > Diphyodont (Appear twice in life) (Ancisors, canines, and first two molars) > >Thecodont : (Jeeth are present in bony socket in jaw) (sAs in us) Heterodont: (Specific teeth for specific function)


  3. Incisors: For gnawing the food. Long. . Canines : $ arp. Jea ring. Absent in erbivores. . Pre molars: Chewing and Grushing. Molars: Chewing and crushing of food. *xpre molars and molars, together help in mastication of food.


  4. Tor a child: 2402/2402 Totat teeth number: 20) gor a 17 year old: 2122/2/122 (Total teeth number: 28) For an Adult: 2123/2128 (Jotal teeth number 82)


  5. . The white part ia called the 8NMBB. Enamel 18 the hardest material. Enamel i8 ectodermal in origin. Secreted by efiM8B0BBofSJC8BB; . All other tooth parts are Mesodermal in origin. . DENJINE : Just below enamel. Surrounded by a pulp cavity. Bined by Dentine secreting cells-0DONJ0BBASJ Cells. 7



  6. Three pairs of Salivary glands are there 2. Submandibular (or Submaxillary) . 3. Sublingual ;ecrete Salivary amylase and lysozyme(=-Saliva). .


  7. PAROTID 3BoAND . In cheeks. (Near Bar) . Bargest in size. . Contributes to nearly 25% of 8aliva 8ecreted.


  8. SUBMANDIBULAR GLAND . Submaxillary Gland . At junction of jaws contributes to nearly 70% of saliva secreted.(Maximum secretion) . DUCT : Wharton's Duct (Longest Salivary Duct)


  9. . Saliva: 99.5% H20, . Salivary Amylase also called as Ptyalin. . ptyalin maximally secreted by peAROJ1DS . Wrea and uric acid (Very small amount) atso secreted