Human Biology

Explore how groups of specialized cells form tissues with distinct structures and functions in the human body.

Learn how food is broken down, absorbed, and utilized for energy and growth.

Understand how oxygen is brought in and carbon dioxide is expelled through lungs and airways.

Understand how blood circulates through the heart and vessels to transport oxygen, nutrients, and waste.

Study the components of blood — red cells, white cells, platelets, and plasma — and their roles in the body.

Learn how the lymphatic system supports immunity and maintains fluid balance.

Understand how the body removes metabolic waste through organs like the kidneys.

Explore how the brain, spinal cord, and nerves coordinate body activities and responses.

Anatomy of a neuron including dendrites, axon, myelin, and synapses, and how it transmits signals.

Discover how we perceive the world through sight, sound, taste, smell, and touch.

Study the skin and its role in protection, sensation, and regulation.

Learn how hormones regulate growth, metabolism, and homeostasis through glands.

Learn how hormones regulate growth, metabolism, and homeostasis through glands.

Learn how hormones regulate growth, metabolism, and homeostasis through glands.

Explore the structure and function of bones, joints, and the human skeleton.

Study how muscles contract and work with bones to produce movement.

Explore the structure and function of male and female reproductive organs.

Understand the roles of key hormones in regulating the human reproductive cycle.

Learn about fertilization, fetal development, and how sex is genetically determined.

Learn how puberty is triggered and regulated by hormonal changes in the body.

Understand how the body maintains internal stability despite external changes.

Learn how different drugs affect the nervous system, organs, and body functions.

Discover how the body defends itself using white blood cells, antibodies, and barriers.