Topics
Living World
- Concept of Living
- Taxonomical Aids
Systematics of Living Organisms
- Systematics of Living Organisms (Introduction)
- Systematics of Living Organisms (Introduction)
- Concept of Systematics
- Concept of Systematics
- Classification of Taxonomy
- Classification of Taxonomy
- Three Domains of Life
- Three Domains of Life
- Chemotaxonomy
- Chemotaxonomy
- Numerical Taxonomy
- Numerical Taxonomy
- Cladogram
- Cladogram
- Phylogeny
- Phylogeny
- DNA Barcoding
- DNA Barcoding
- Taxonomic Hierarchy of Living Organisms: Unit of Classification
- Taxonomic Hierarchy of Living Organisms: Unit of Classification
- Taxonomic Hierarchy
- Taxonomic Hierarchy
- Units of Classification
- Units of Classification
- Binomial Nomenclature
- Salient Features of Five Kingdoms
- Salient Features of Five Kingdoms
- Acellular Organisms
- Acellular Organisms
Kingdom Plantae
- Kingdom Plantae
- Salient Features of Major Plant Groups Under Cryptogams
- Salient Features of Major Plant Groups Under Phanerogams
- Plant Life Cycle and Alternation of Generations
Kingdom Animalia
- Criteria Used for Animal Classification
- Animal Body Plan
- Animal Classification
Cell Structure and Organization
- Cell: Structural and Functional Unit of Life
- Types of Cells
- Components of Eukaryotic Cell
Biomolecules
- Biomolecules in Living System
- Biomolecules in the Cell
- Biomolecules in the Cell > Carbohydrates
- Biomolecules in the Cell > Lipids
- Biomolecules in the Cell > Proteins
- Biomolecules in the Cell > Nucleic Acids
- Biomolecules in the Cell > Enzymes
- Nature of Enzyme Action
- Biomolecules in the Cell > Enzymes
- Biomolecules in the Cell > Enzymes
- Enzyme - Substrate Interactions
- Factors Affecting Enzyme Activity
- Metabolism
- Metabolic Pool
- Metabolism
Cell Division
Plant Tissues and Anatomy
- Tissues - “The Teams of Workers”
- Meristems or Meristematic Tissues
- Permanent Tissue
- Tissue System
- Secondary Growth in Plants
- Wood
- Cork Cambium and Secondary Growth
- Anatomy of Root, Stem and Leaf
Morphology of Flowering Plants
- Phanerogams > Division II- Angiosperms
- Evidences of organic evolution > Morphology
- Study of Some Important Families
Animal Tissue
Study of Animal Type : Cockroach
- Systematic Position
- External Morphology
- Body Cavity
- Digestive System of Cockroach
- Reproduction System
- Interactions with Mankind
Photosynthesis
- Concept of Photosynthesis
- Chloroplasts
- Nature of Light
- Mechanism of Photosynthesis
- Light Reaction
- Photophosphorylation
- Light-Independent Phase of Photosynthesis
- Photorespiration
- C4 Pathway Or Hatch-slack Pathway
- Cam - Crassulacean Acid Metabolism
- Factors Affecting Photosynthesis
Respiration and Energy Transfer
- Production of ATP
- Glycolysis
- Phases of Respiration: Pyruvate Oxidation (Link Reaction)
- Electron Transport System (Ets) and Oxidative Phosphorylation
- Tricarboxylic Acid Cycle (Citric Acid Cycle or Kreb’s Cycle)
- Phases of Respiration: Electron Transport Chain (Electron Transfer System)
- Fermentation
- Respiratory Balance Sheet
- Amphibolic Pathways
- Utility of Stepwise Oxidation
- Respiratory Quotient
Human Nutrition
- Nutrients and Nutrition
- Component of Food
- Human Digestive System
- The Mouth and Buccal Cavity
- The Salivary Glands
- The Teeth and Its Structure
- Human Digestive System
- The Food Pipe/Oesophagus
- The Stomach
- The Small Intestine
- The Large Intestine
- Human Digestive System
- Physiology of Digestion
- Absorption of Food
- Assimilation of Food
- Egestion of Food
- Nutritional and Digestive Tract Disorders
Excretion and Osmoregulation
- Excretion
- Modes of Excretion: Ammonotelism, Ureotelism, and Uricotelism
- Human Excretory System
- Kidney and Its Internal Structure
- Structure of a Kidney Tubule (Nephrons)
- Function of the Kidney - “Production of Urine”
- Concentration of Urine
- Composition of Urine
- The Excretory Organs
- Common Disorders of the Urinary System
Skeleton and Movement
- Movements and Locomotion
- Location and Structure of Skeletal Muscles
- Working of Skeletal Muscles
- Mechanism of Muscle Contraction
- Physiology of Muscle Relaxation
- Relaxation of Muscle Fibres
- Skeletal System
- Group of Skeleton
- Types of Joints
- Disorders Related to Muscles
- Disorders Related to Bones
Maharashtra State Board: Class 7
The Salivary Glands:
Saliva plays an important role in digestion, starting the breakdown of food in the mouth. It is produced by salivary glands and contains special enzymes that help in digestion.
- Saliva: Saliva is a watery fluid secreted in the mouth cavity. It contains an enzyme called ptyalin (salivary amylase), which starts the digestion of starch in food. Ptyalin converts starch into maltose, a type of sugar, making it easier to digest.
- Enzymes: Enzymes are substances secreted in the body of an organism that bring about specific chemical reactions. They act as catalysts. Digestive enzymes of the digestive system bring about changes in the food materials. Metabolic processes are impossible without enzymes. Enzymes are a specific type of protein. They are most active at normal body temperature.
- Salivary Glands: The salivary glands produce saliva, which flows into the mouth through small tubes called ducts. There are three main pairs of salivary glands:
| Salivary Gland | Location | Function |
|---|---|---|
| Parotid Glands | In front of the ears | The largest salivary glands produce saliva for digestion. |
| Submandibular Glands | Near the pharynx (throat) | Produce both watery and mucus-like saliva. |
| Sublingual Glands | Under the tongue | Produce saliva to keep the mouth moist. |
Shaalaa.com | The Salivary Glands
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