Скачать или смотреть Class 11 Biology New Book 2025 | Chapter 9 Human Digestive System | Lecture 2 | Oral Cavity

In this lecture, we continue Chapter 9: Human Digestive System from the Class 11 Biology New Book 2025 (Punjab Board). This is Lecture 2, focusing on the Oral Cavity, the first and very important part of the human digestive system.

📌 In this video, you will learn:
Definition and structure of the oral cavity
Parts of the oral cavity (mouth, teeth, tongue, salivary glands)
Types of teeth and their functions
Role of tongue in tasting, chewing, and swallowing
Saliva: composition and functions
Role of salivary amylase (ptyalin) in digestion
Mechanical and chemical digestion in the mouth

This lecture is specially designed for FSc 1st Year Biology students, strictly according to the latest Punjab Board syllabus 2025. Concepts are explained in an easy, exam-oriented, and student-friendly way to help you prepare for board exams and entry tests.

👉 Watch till the end for clear concepts and revision points.
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🔹 Keywords
Class 11 Biology
Human Digestive System
Oral Cavity
Digestion in Mouth
Saliva and Salivary Glands
FSc 1st Year Biology
Punjab Board Biology 2025
Chapter 9 Biology
Biology New Book 2025
Science Teaching Zone
Human Nutrition
Biology Lecture

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