Exhaustive Study Notes on Human Health, Digestive System, Hygiene, Microorganisms, and Immunity (copy)

Healthy Food

Provides essential nutrients for growth, repair, maintenance, and disease prevention without excessive harmful substances.

Unhealthy Food

Lacks adequate essential nutrients, often high in fats, sugars, or additives, leading to negative health outcomes.

Balanced Diet

Contains an optimal balance of essential foodstuffs and nutrients tailored to human bodily requirements.

Digestion

The process of breaking down complex food molecules into simpler forms for absorption and utilization by the body.

Physical Digestion

Mechanical breakdown of food into smaller fragments to increase surface area without chemical transformation.

Chemical Digestion

Enzymatic hydrolysis that breaks down complex nutrients into absorbable monomer units.

Proteins

Function as primary building blocks for growth, structure maintenance, and tissue repair.

Carbohydrates

Serve as the primary fuel and main source of energy for biological functions.

Fats and Oils

Concentrated energy storage, assist in cell structure, and aid in thermal insulation.

Vitamins

Organic compounds essential for various metabolic processes; includes Vitamin A, C, and D.

Bacteria

Single-celled prokaryotic microorganisms that can cause infectious diseases, such as Salmonella.

Viruses

Obligate intracellular entities that replicate only within host cells, e.g., COVID-19 virus.

Adaptive Immunity

Highly specific acquired immunity developing over time from pathogen exposure or vaccination.

First Aid Box

Contains items like sterile gauze, antiseptic liquids, and bandages for treating injuries.

Nutritional Deficiency

Lack of sufficient essential nutrients leading to clinical symptoms and metabolic impairment.

Contagious Diseases

Infectious diseases easily transmitted from one person to another.

Public Health Education

Raising awareness about personal and environmental cleanliness to promote health.

Sanitation

Practices that prevent diseases by establishing hygiene standards and proper waste disposal.

Egestion

The process of eliminating undigested and unabsorbed waste products from the body.