Human Biology Course

Lesson 1 • Levels of Biological Organisation

Introduces the hierarchy from atoms to organ systems. Provides the structural lens used throughout the entire course.

Lesson 2 • Cell Structure and Function

Examines organelles and membrane dynamics. Connects cellular machinery to tissue and organ function covered later.

Lesson 3 • Chemistry Essentials for Biology

Reviews atoms, bonds, and key biomolecules. Grounds later physiological concepts in chemical principles.

Lesson 1 • Skin Layers and Appendages

Details epidermis, dermis, and hypodermis composition. Links skin structure to its barrier and sensory functions.

Lesson 2 • Skin Functions and Wound Healing

Analyses thermoregulation, UV protection, and repair processes. Demonstrates integumentary contributions to whole-body homeostasis.

Lesson 3 • Connective, Muscle, and Nervous Tissue

Surveys the remaining three tissue types and their structural roles. Prepares students for organ system chapters ahead.

Lesson 1 • Axial and Appendicular Skeleton

Maps the 206 bones by region and functional group. Provides anatomical reference for muscular and clinical chapters.

Lesson 2 • Joints and Range of Motion

Classifies joints by structure and movement type. Connects joint anatomy to mobility and injury vulnerability.

Lesson 3 • Major Muscle Groups and Movement

Identifies prime movers, synergists, and antagonists for key body movements. Applies muscular anatomy to posture and exercise.

Lesson 4 • Skeletal Muscle Anatomy and Contraction

Details muscle fibre organisation and the sliding filament mechanism. Links neuromuscular signalling to force production.

Lesson 1 • Neuron Structure and Signal Transmission

Covers neuron anatomy, resting potential, and action potential propagation. Establishes the electrical basis of all neural communication.

Lesson 2 • Special Senses: Vision and Hearing

Details eye and ear anatomy alongside their transduction mechanisms. Demonstrates how physical stimuli become neural signals.

Lesson 3 • Taste, Smell, and Somatic Senses

Covers chemoreception and somatosensory pathways including pain. Completes the sensory picture needed for clinical assessment.

Lesson 4 • Central Nervous System Organisation

Surveys brain regions, spinal cord structure, and meningeal protection. Connects CNS anatomy to cognitive and motor functions.

Lesson 1 • Heart Anatomy and Cardiac Cycle

Details heart chambers, valves, and the sequence of contraction. Connects structural anatomy to pumping efficiency.

Lesson 2 • Key Hormones and Their Effects

Surveys thyroid, adrenal, pancreatic, and gonadal hormones. Links each hormone to metabolic, stress, and reproductive regulation.

Lesson 3 • Endocrine Glands and Hormone Mechanisms

Identifies major glands and classifies hormones by chemical nature and receptor type. Establishes how hormones alter target cell activity.

Lesson 4 • Blood Vessels and Circulation

Compares artery, vein, and capillary structure relative to function. Traces pulmonary and systemic circuits through the body.

Lesson 1 • Respiratory Anatomy and Ventilation

Maps airways from nasal cavity to alveoli and explains pressure-driven breathing. Establishes structural basis for gas exchange.

Lesson 2 • Kidney Structure and Urine Formation

Examines nephron anatomy and the three-step filtration process. Connects renal function to fluid, electrolyte, and pH balance.

Lesson 3 • Gas Exchange and Transport

Covers alveolar diffusion, haemoglobin binding, and CO2 transport. Links respiratory physiology to cardiovascular oxygen delivery.

Lesson 4 • Digestion, Absorption, and Accessory Organs

Details enzymatic breakdown of macronutrients and absorptive mechanisms. Integrates liver, gallbladder, and pancreas contributions.

Lesson 1 • Innate Immunity: First and Second Lines

Covers physical barriers, phagocytes, and the inflammatory response. Establishes rapid, nonspecific defences as the immune foundation.

Lesson 2 • Adaptive Immunity: Lymphocytes and Antigens

Explains antigen recognition, clonal selection, and lymphocyte activation. Connects adaptive specificity to long-term immune memory.

Lesson 3 • Immune Disorders and Vaccination

Analyses hypersensitivity, autoimmunity, and immunodeficiency. Applies immune principles to vaccine design and herd immunity.

Lesson 1 • Fertilisation and Early Embryogenesis

Traces sperm-egg fusion through implantation and germ layer formation. Connects cellular events to organ system origins.

Lesson 2 • Fetal Development and Birth

Surveys organogenesis, fetal growth milestones, and parturition. Integrates endocrine and mechanical triggers of labour.

Lesson 3 • Male Reproductive Anatomy and Spermatogenesis

Details testicular structure, sperm production, and accessory gland contributions. Establishes the male reproductive pathway from production to ejaculation.

Lesson 4 • Postnatal Growth and Aging

Examines developmental stages from infancy through senescence. Connects physiological changes across the lifespan to organ system function.