Ch 09 - Life Processes in Animals7th Science
Life Processes
What is the collective term for the essential biological functions required for the survival and maintenance of living organisms?
What is the collective term for the essential biological functions required for the survival and maintenance of living organisms?
These functions are collectively known as Life Processes.
- Core Examples: Nutrition, Respiration, Circulation (Transportation), Excretion, and Reproduction.
- Purpose: They ensure that the organism obtains energy, grows, repairs cellular damage, and actively removes toxic wastes from the body.
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Necessity of Digestion
Why can't the human body directly utilize the carbohydrates, proteins, and fats present in complex foods like paneer or chapati?
Why can't the human body directly utilize the carbohydrates, proteins, and fats present in complex foods like paneer or chapati?
- Complex Components: The food we consume consists of large, complex macromolecules (like starch, proteins, and fats) that are physically and chemically too large to pass through cell membranes.
- Digestion: These components must first be broken down into simpler, water-soluble forms (like glucose, amino acids, and fatty acids) before the bloodstream can absorb and transport them to individual cells.
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The Alimentary Canal Pathway
Trace the exact sequential journey of food as it travels through the human digestive tract.
Trace the exact sequential journey of food as it travels through the human digestive tract.
The food passes through a continuous muscular tube called the Alimentary Canal in this specific order:
- Mouth (Oral Cavity / Buccal Cavity)
- Oesophagus (Food Pipe)
- Stomach
- Small Intestine
- Large Intestine
- Rectum
- Anus
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Many Ostriches Swallow Small Lizards Right Away
Also in this chapter
32 more cards to study in Prism
- 4Mechanical vs. Chemical Digestion (Mouth)
- 5Action of Saliva on Starch (Iodine Test)
- 6Movement in the Food Pipe (Oesophagus)
- 7Stomach Secretions
- 8Discovery of Stomach Function
- 9Role of the Liver and Bile
- 10Role of the Pancreas
- 11Absorption via Villi (Small Intestine)
- 12Function of the Large Intestine
- 13Small vs. Large Intestine Naming Paradox
- 14Rumination in Herbivores
- 15Digestion in Birds
- 16Celiac Disease & Gluten
- 17Gut Bacteria & Fermented Foods
- 18Charaka Samhita & Digestion
- 19Thirukkural on Digestion
- 20Breathing vs. Respiration
- 21Cellular Respiration Equation
- 22Inhaled vs. Exhaled Air Composition
- 23The Respiratory Pathway
- 24Mechanism of Inhalation
- 25Mechanism of Exhalation
- 26The Bell-Jar Breathing Model
- 27Gas Exchange in Alveoli
- 28Testing for Carbon Dioxide (Lime Water Test)
- 29Respiration in Amphibians (Frogs)
- 30Breathing in Fishes and Earthworms
- 31Tummo Breathing (Ladakh)
- 32Benefits of Pranayama
- 33COVID-19 and the Lungs
- 34Hazards of Smoking
- 35The Circulatory System (System Bridge)
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