2804NRS Human Pathophysiology and Pharmacology 1
The Complete Exam Bible · T1 20262804NRS Overview
- Griffith University
- T1 2026
- 7 chapters
- Health and Medicine
Human Pathophysiology and Pharmacology 1 teaches how a disease begins at the failing cell and how drugs intervene — homeostasis and cell injury, immunity and hypersensitivity, neoplasia, musculoskeletal disease and pain, genetics and ageing, neurological and autonomic systems, and the pharmacology (PK/PD) that runs through them.
- Assessed by A1 — in-class quiz ~20% · A2 — concept map 40% · A3 — End-of-Trimester exam 40%
- Key terms Homeostasis, Hypersensitivity, Metastasis, Pharmacokinetics (ADME)
- How to prepare Write every disease as one cascade — risk factor → aetiology → pathophysiology → clinical manifestations &mdash…
- Most asked What is on the 2804NRS exam?
How 2804NRS is assessed
| Component | Weight | Format |
|---|---|---|
| A1 — in-class quiz | ~20% | Early trimester · MCQ on Modules 1–2 (cells, injury, inflammation, microbiology) |
| A2 — concept map | 40% | Mid-trimester · a colour-coded RF→aetiology→pathophysiology→clinical cascade + ~500 words |
| A3 — End-of-Trimester exam | 40% | Exam period · 50 MCQ + 12 short-answer · examines Modules 3–7 — confirm the exact split in your Course Profile |
What 2804NRS covers
Seven examined modules → one exam-ready map. Each links to its free chapter guide.
Pathophysiology Foundations
Homeostasis · cellular adaptation · cell injury & death · acute inflammation · infectionPathophysiology begins as a failure of homeostasis at the cell. A stressor pushes a cell past what it can cope with, and the body's responses — adaptation, injury, inflammation — produce the signs seen at the bedside.
- 1.1 Homeostasis & negative feedback
- 1.2 Cellular adaptation — size, number, type (and dysplasia)
- 1.3 Cell injury & death: necrosis vs apoptosis
- 1.4 Acute inflammation — vascular & cellular phases, 5 cardinal signs
- 1.5 Exudate types — the fluid tells you the cause
- 1.6 Infection basics — the chain of infection
Immunity and Inflammation
Innate vs adaptive · antibodies · hypersensitivity I–IV · anaphylaxis · autoimmunityThe immune system runs in two layers: an innate layer that is fast, fixed and forgetful, and an adaptive layer that is slow on first contact but specific and able to remember — the basis of vaccination.
- 3.1 Innate vs adaptive immunity — the two layers
- 3.2 The immune cells — who does what
- 3.3 Antibodies — structure and the five classes
- 3.4 Primary vs secondary response & the four immunity types
- 3.5 Hypersensitivity I–IV (ACID) — immunity that harms
- 3.6 Anaphylaxis, immunodeficiency (HIV/AIDS) & autoimmunity
Cancer
Benign vs malignant · cell cycle & checkpoints · oncogenes vs suppressors · metastasis · TNMCancer is a cell-cycle control failure. A normal cell divides only when told to and stops at checkpoints if its DNA is damaged; neoplasia is new, uncontrolled, autonomous growth that no longer obeys those controls.
- 4.1 Neoplasia: benign vs malignant
- 4.2 The cell cycle, checkpoints & the cancer overlay
- 4.3 Carcinogenesis & the metastatic cascade
- 4.4 Grading vs staging (TNM) — the perennial trap
- 4.5 One cancer end-to-end — the SAQ cascade
Musculoskeletal and Pain
OA vs RA · bone healing · osteoporosis · nociception · the COX pathway & WHO ladderThe musculoskeletal system fails in two flavours — degenerative (wear of cartilage and bone) and inflammatory/autoimmune (the immune system attacking the joint) — and that split decides the drug.
- 5.1 Two kinds of arthritis — OA vs RA
- 5.2 Bone healing (4 stages) & osteoporosis
- 5.3 Pain physiology — nociception (4 steps)
- 5.4 The COX pathway — how anti-inflammatories work
- 5.5 The WHO analgesic ladder & opioids
Genetics and Ageing
Mendelian inheritance · Punnett squares · chromosomal disorders · ageing pharmacokineticsDisease can be written into the genome (inherited or mutated) and then shaped by time (ageing) — and each half reduces to one diagram.
- 6.1 Chromosomes, genes & the genetic basis of disease
- 6.2 Mendelian inheritance — reading the Punnett square
- 6.3 Ageing physiology — the body over time
- 6.4 Pharmacokinetics in the older adult
Neurological and Autonomic
Raised ICP & Monro-Kellie · the ANS · adrenergic & cholinergic receptors and their drugsThe brain lives in a sealed box, so pressure is everything; and the body's involuntary functions run on a two-wire autonomic system whose chemistry — noradrenaline vs acetylcholine on adrenergic vs cholinergic receptors — is the richest source of pharmacology MCQs in the unit.
- 7.1 Neurological dysfunction — the general picture
- 7.2 Raised ICP — Monro-Kellie & the compliance curve
- 7.3 The autonomic nervous system — two wires, two chemicals
- 7.4 Adrenergic receptors — match the drug to the receptor
- 7.5 The cholinergic synapse — ACh & its drugs
Pharmacology Principles
PK vs PD · ADME · the concentration-time curve · dose-response · therapeutic indexAll of pharmacology splits into two questions. Pharmacokinetics (PK) = what the body does to the drug — how it moves in, around, gets broken down and out (ADME: Absorption, Distribution, Metabolism, Excretion).
- PK vs PD — the two questions
- Pharmacokinetics 1 — ADME, the drug's journey
- Pharmacokinetics 2 — the concentration-time curve & dosing
- Pharmacodynamics 1 — receptors & the dose-response curve
- Pharmacodynamics 2 — agonists, antagonists & partial agonists
- Pharmacodynamics 3 — therapeutic index & the safety picture
The unit is decided by two 40% pieces: the A2 concept map and the End-of-Trimester exam (50 MCQ + 12 short-answer). Both reward the same skill — writing each disease as a risk factor → aetiology → pathophysiology → clinical-manifestation cascade — so this guide teaches every condition in that one chainable form.
Worked example · free
Anaphylaxis — a Type I hypersensitivity mechanism cascade, mark by mark
- +1Prior sensitisation: an earlier exposure to the allergen made the person produce IgE, which coats mast cells and basophils.
- +1Re-exposure & degranulation: the allergen cross-links that surface IgE, triggering mass degranulation and a flood of histamine into the circulation within minutes.
- +1Systemic vasodilation: histamine dilates vessels and raises permeability → severe hypotension, dizziness and syncope.
- +1Airway compromise: bronchoconstriction + mucosal oedema → wheeze, dyspnoea and risk of respiratory failure; skin shows urticaria and angio-oedema.
- +1First-line drug — adrenaline: via β2 it bronchodilates (opens the airway) and via α1 it vasoconstricts (raises blood pressure).
- +1State the trap: antihistamines are not first-line in anaphylaxis — adrenaline is given immediately.
Key terms
- Homeostasis
- The maintenance of a stable internal environment — temperature, pH, glucose, fluid & electrolytes — within narrow limits despite external change. Disease is, at its core, a failure to maintain it.
- Hypersensitivity
- An excessive or abnormal immune response to an antigen that damages your own tissue. Four types (ACID): I allergic/IgE, II cytotoxic, III immune-complex, IV delayed/T-cell.
- Metastasis
- The spread of malignant cells to distant secondary sites — by blood, lymphatics or transcoelomic seeding. Metastasis, not size, is the feature that defines a tumour as malignant.
- Pharmacokinetics (ADME)
- What the body does to a drug: Absorption, Distribution, Metabolism and Excretion. It governs the concentration of drug at the site of action over time.
- Therapeutic index
- The safety margin of a drug, TD50/ED50 (or LD50/ED50). A larger index is safer; a narrow index (warfarin, digoxin, lithium, gentamicin) means levels must be monitored.
2804NRS FAQ
Is 2804NRS hard?
It is content-dense rather than mathematical: the challenge is volume and precision, not calculation. Most marks reward explaining a mechanism (a pathophysiology cascade or a drug's mode of action) accurately, so the difficulty is recall and clear linking under exam time.
How is 2804NRS assessed?
Three pieces, with two carrying most of the weight: an early in-class quiz (about 20%, Modules 1–2), the A2 concept map (40%), and the End-of-Trimester exam (40%, 50 MCQ + 12 short-answer). The exam examines Modules 3–7; confirm this trimester's exact split and rules in your own Course Profile.
What is on the 2804NRS exam?
The End-of-Trimester exam examines Modules 3–7: immunity and hypersensitivity, neoplasia and cancer, musculoskeletal disease and pain, genetics and ageing, and neurological plus autonomic pharmacology. The MCQ half rewards broad recall; the short-answer half rewards explaining a mechanism cascade in prose.
Is the 2804NRS exam open or closed book?
The materials we worked from do not officially state book status, so do not assume you can bring notes. Check your own Course Profile and revise as if it is closed-book — if it turns out to be open-book you have lost nothing.
Is using AskSia for 2804NRS cheating?
No. AskSia is a study reference written in our own words — we host none of your lecturer's files, and Sia teaches you the method to earn the marks; it does not complete or sit your assessments.
Questions students ask in each 2804NRS chapter
- What is the single big idea of this chapter?
- Pathophysiology is a failure of homeostasis at the cell. A stressor exceeds what a cell can buffer; its adaptation, injury and inflammatory responses then produce the clinical signs. Every later module is this same story told about a different organ. Chapter 01 · Pathophysiology Foundations
- What is the difference between innate and adaptive immunity?
- Innate immunity is non-specific, immediate and keeps no memory — barriers, inflammation, fever, phagocytes, NK cells and complement. Adaptive immunity is specific, slower on first contact and has memory — B cells make antibodies (humoral) and T cells run the cell-mediated arm. Inflammation and fever are innate even though they feel like a 'response.' Chapter 02 · Immunity and Inflammation
- What is the single feature that defines a malignant tumour?
- Metastasis — the ability to spread to distant sites. A large benign tumour is still benign; a tiny malignant one is still cancer. Do not be fooled by size: it is metastasis, plus invasion and poor differentiation, that defines malignancy. Chapter 03 · Cancer
- How do I tell osteoarthritis from rheumatoid arthritis?
- OA is degenerative, asymmetric and local — weight-bearing joints, worse with activity, bone spurs. RA is autoimmune, symmetric and systemic — hands and feet, morning stiffness over 30 minutes, fever/malaise. RA is treated with disease-modifying drugs (DMARDs) because the immune process can be switched off; OA management is symptomatic. Chapter 04 · Musculoskeletal and Pain
- How do I read an inheritance pattern from a cross?
- Use a Punnett square: capital = dominant allele, lower-case = recessive. For two carriers (Aa × Aa) the genotypes are 1 AA : 2 Aa : 1 aa and the phenotypes 3 dominant : 1 recessive — so 25% affected, 50% carriers. Autosomal dominant needs one allele, autosomal recessive needs two, and X-linked recessive hits males more often. Chapter 05 · Genetics and Ageing
- Why is intracranial pressure the hub of this module?
- Because brain tumours, bleeds, oedema and infection all add volume to a fixed box, so they converge on one final pathway: rising ICP → falling cerebral perfusion (CPP = MAP − ICP) → ischaemia. Learn the Monro-Kellie compliance curve once — flat (compensated) then steep (decompensated) — and it explains the lot. Chapter 06 · Neurological and Autonomic
- What is the difference between pharmacokinetics and pharmacodynamics?
- Pharmacokinetics (PK) is what the body does to the drug — Absorption, Distribution, Metabolism and Excretion (ADME) — and it governs the drug concentration at the site over time. Pharmacodynamics (PD) is what the drug does to the body — receptor binding and the resulting effect. PK sets up PD: it decides how much active drug reaches the receptor and for how long. Chapter 07 · Pharmacology Principles
How to study for the exam
Write every disease as one cascade — risk factor → aetiology → pathophysiology → clinical manifestations — because that single structure answers both 40% pieces: the A2 concept map is the cascade drawn and colour-coded, and the short-answer exam is the same cascade written in prose.
Learn Modules 1–2 once as scaffolding (inflammation underpins hypersensitivity; cell injury underpins cancer), then weight your final-exam revision on Modules 3–7. Drill the high-yield grids cold — the hypersensitivity I–IV mediators, oncogene vs tumour-suppressor, the COX-1/COX-2 split, the adrenergic receptor map — because the MCQ half is built straight from them.
