The Human Body

25 Skills in Science. 23 are ready to try — three verified questions each, no account needed.

Ready to try

Ages 5–7
Basic Body Needs
Know that the body needs food for energy, water to stay hydrated, sleep to rest and grow, and exercise to keep muscles and the heart strong — and that these are basic needs every human body has
9 verified questions on this shelf
Ages 5–7
Bones & Muscles
Know that the body has a skeleton made of bones inside it that gives the body its shape and protects important organs like the brain (skull) and heart (ribcage), and that muscles attached to bones allow the body to move
9 verified questions on this shelf
Ages 5–7
The Brain Controls the Body
Understand that the brain is the body’s control centre: it receives messages from the senses, thinks and makes decisions, and sends messages through nerves to tell muscles what to do
9 verified questions on this shelf
Ages 5–7
The Five Senses
Explore the five senses in detail: sight uses eyes to detect light, hearing uses ears to detect sound, touch uses skin to feel pressure and temperature, taste uses the tongue to detect flavours, and smell uses the nose to detect odours
9 verified questions on this shelf
Ages 5–7
The Heart & Blood
Understand that the heart is a muscle that pumps blood around the body through tubes called blood vessels, and that we can feel our heartbeat by placing a hand on our chest or fingers on our wrist
10 verified questions on this shelf
Ages 7–9
Balanced Diet & Food Groups
Know the main food groups (carbohydrates, proteins, fats, vitamins, minerals, fibre, water) and understand that a balanced diet includes the right amounts from each group to keep the body healthy and provide energy, growth materials, and p…
10 verified questions on this shelf
Ages 7–9
Cells, Tissues & Organs
Understand that the body is organised in a hierarchy: tiny cells are the building blocks, groups of similar cells form tissues, tissues combine into organs (like the heart or stomach), and organs work together in organ systems (like the ci…
10 verified questions on this shelf
Ages 7–9
How Muscles Move Bones
Understand that muscles work in pairs to move bones: when one muscle contracts (gets shorter and pulls), the opposite muscle relaxes, and that some muscles are voluntary (we choose to use them) while others like the heart are involuntary (…
9 verified questions on this shelf
Ages 7–9
How the Eye Works
Describe how the eye works: light enters through the pupil, the lens focuses it onto the retina at the back of the eye, and the retina sends signals along the optic nerve to the brain, which interprets the image
9 verified questions on this shelf
Ages 7–9
Naming Major Bones
Identify major bones of the human skeleton by name (skull, spine/vertebrae, ribcage, pelvis, femur, humerus) and explain the skeleton’s three jobs: supporting the body’s shape, protecting organs, and enabling movement with muscles
8 verified questions on this shelf
Ages 7–9
The Digestive Journey
Trace the journey of food through the digestive system: food enters the mouth where teeth break it down and saliva begins digestion, travels down the oesophagus to the stomach, passes through the small intestine where nutrients are absorbe…
9 verified questions on this shelf
Ages 7–9
Types of Teeth
Identify the four types of human teeth (incisors for cutting, canines for tearing, premolars and molars for grinding) and understand that tooth shape is linked to function, just as in other animals — herbivores have flat teeth, carnivores…
10 verified questions on this shelf
Ages 9–11
Circulation & Breathing Together
Understand how the circulatory and respiratory systems work together: the lungs oxygenate the blood, the heart pumps it around the body, cells use the oxygen and produce carbon dioxide waste, and the blood carries the waste back to the lun…
9 verified questions on this shelf
Ages 9–11
Growing Up & Puberty
Describe the stages of human development from birth to old age: baby, toddler, child, adolescent (puberty), young adult, middle-aged adult, elderly — understanding the physical changes that happen at each stage, especially during puberty
10 verified questions on this shelf
Ages 9–11
Healthy Lifestyle Choices
Understand how lifestyle choices affect the body’s health: a balanced diet, regular exercise, adequate sleep, and avoiding harmful substances (tobacco, alcohol, drugs) help body systems function well, while poor choices increase the risk o…
10 verified questions on this shelf
Ages 9–11
Heart & Blood Circulation
Describe the circulatory system in detail: the heart has four chambers (two atria, two ventricles) that pump blood in a double loop — one to the lungs for oxygen and one to the rest of the body to deliver it — through arteries, veins, and…
9 verified questions on this shelf
Ages 9–11
The Immune System
Know that the body has an immune system that protects against illness: the skin acts as a barrier, white blood cells identify and destroy germs (bacteria and viruses), and vaccines train the immune system to recognise specific diseases bef…
10 verified questions on this shelf
Ages 9–11
The Nervous System
Understand that the nervous system has two parts — the central nervous system (brain and spinal cord) and nerves that branch throughout the body — and that nerve signals travel at high speed to coordinate senses, thought, and movement
9 verified questions on this shelf
Ages 11–13
Immunity & Vaccines
Distinguish innate (non-specific, immediate) from adaptive (specific, memory-forming) immunity; explain how B cells produce antibodies that recognise specific antigens, how T cells destroy infected cells, and why immunological memory makes…
10 verified questions on this shelf
Ages 11–13
Neurons & Brain Structure
Explain how neurons transmit signals as electrochemical impulses across synapses, describe how the brain is organised (lobes and functions, limbic system for emotion), and explain neuroplasticity — why learning and practice physically chan…
9 verified questions on this shelf
Ages 12–14
DNA & Genes
Describe the double helix structure of DNA (base pairs, complementarity), explain how genes are sections of DNA that code for proteins, introduce the central dogma (DNA → mRNA → protein) conceptually, and discuss the ethical implications o…
9 verified questions on this shelf
Ages 12–14
How the Body Stays in Balance
Explain homeostasis as the process of maintaining a stable internal environment; describe the main feedback loop systems (negative feedback) using blood glucose regulation (insulin/glucagon) and body temperature as concrete examples; and c…
12 verified questions on this shelf
Ages 13–14
Cancer & Stem Cells
Explain that cancer occurs when mutations in DNA disable normal cell-cycle controls, causing uncontrolled cell division and tumour formation; describe how stem cells differ from specialised cells and their potential for regenerative medici…
9 verified questions on this shelf

Being planted

These Skills are on the map, but their questions are still being written and checked.

Ages 5–7
How Breathing Works
Coming soon
Ages 9–11
How the Lungs Work
Coming soon

Skill names and descriptions include the Marble Skill Taxonomy © Generative Spark, Inc. (withmarble.com), licensed under ODbL 1.0 (database) and CC BY-SA 4.0 (content). Practice questions are GlowGrades's own, each checked by independent verifiers that must agree before a child ever sees it.