Our Body and Health

Overview

Our Body and Health is a foundational topic in Environmental Studies for OTET Paper I, covering the human body's structure, sensory perception, personal hygiene practices, and common childhood diseases. This topic connects biological concepts with everyday health practices that primary school children encounter.

For OTET, expect questions testing factual recall of body parts and their functions, identification of sense organs and their roles, hygiene practices suitable for young learners, and common diseases with their causes and prevention. The topic also appears in pedagogy questions about how to teach body awareness to Classes I–V through activities and local examples relevant to Odisha's context.

Mastery requires knowing the basic anatomy at a child-friendly level, linking hygiene to disease prevention, and understanding how teachers can make these concepts accessible through songs, models, and hands-on activities.

Key Concepts

• **External body parts** include head, neck, trunk (chest and abdomen), and limbs (arms and legs). Children first learn to identify and name these before understanding internal organs.

• **Internal organs** perform life-sustaining functions: heart pumps blood, lungs enable breathing, stomach and intestines digest food, brain controls all actions, and kidneys filter waste.

• **Five sense organs** — eyes (sight), ears (hearing), nose (smell), tongue (taste), skin (touch) — are the body's connection to the external world. Each has a specific receptor for its stimulus.

• **Personal hygiene** refers to daily practices that keep the body clean and healthy: bathing, brushing teeth, washing hands, cutting nails, wearing clean clothes, and maintaining clean surroundings.

• **Communicable diseases** spread from person to person through air, water, food, or contact. Examples: cold, flu, diarrhoea, cholera, malaria, dengue.

• **Non-communicable diseases** do not spread from person to person. Examples: diabetes, asthma, heart disease. These are less emphasised at the primary level but teachers should know the distinction.

• **Vaccination and immunisation** protect children from diseases like polio, measles, tuberculosis, and hepatitis. The national immunisation schedule is part of health awareness.

• **First aid** basics — cleaning wounds, applying bandage, giving ORS for dehydration — are practical skills children can learn.

Key Facts

| Body System | Main Organs | Primary Function | |-------------|-------------|------------------| | Skeletal | Bones (206 in adults) | Support and protection | | Muscular | Muscles | Movement | | Digestive | Stomach, intestines, liver | Breaking down food | | Respiratory | Lungs, nose, windpipe | Breathing and oxygen exchange | | Circulatory | Heart, blood vessels | Transport of blood and nutrients | | Nervous | Brain, spinal cord, nerves | Control and coordination | | Excretory | Kidneys, skin, lungs | Removal of waste |