Dr Matt & Dr Mike's A-Z of the Human Body is a concise, engaging podcast series that explores human anatomy and physiology one term at a time. Hosted by Dr Matt Barton (Griffith University) and Dr Mike Todorovic (Bond University), both experienced educators and science communicators, the series aims to make complex medical concepts accessible and enjoyable.
The structure of the epidermis, dermis and skin glands explains barrier function, sensation, pigmentation and temperature regulation. Clinical applications include increased water loss after burns, melanocyte loss in vitiligo, persistent tattoo pigmentation and treatment of hyperhidrosis.
Crohn's disease may cause skip lesions and transmural complications, while ulcerative colitis usually produces continuous mucosal inflammation from the rectum. Their complex immune pathways explain why blocking a pro-inflammatory cytokine does not always improve disease.
Mean arterial pressure depends on cardiac output and systemic vascular resistance but does not directly measure tissue perfusion. Understanding its calculation and regulation helps explain why apparently reassuring blood pressure can coexist with compensated shock or inadequate local blood flow.
Systolic and diastolic pressures reflect ventricular ejection, arterial compliance and vascular resistance. Pulse pressure and Korotkoff sound endpoints help interpret blood pressure measurements, while reduced arterial elasticity can widen the difference between systolic and diastolic readings.
A structured blood-gas approach starts with pH, carbon dioxide and bicarbonate before considering compensation. The anion gap then helps distinguish acid addition from bicarbonate loss, while vomiting, diarrhoea and hyperventilation demonstrate how mixed disturbances arise.
Platelet inhibition, anticoagulation and fibrinolysis act at different points in haemostasis. Aspirin, P2Y12 blockade, heparin, direct inhibitors, warfarin and tissue plasminogen activator illustrate why drug combinations, monitoring and diagnostic certainty before fibrinolysis matter.
Autonomic dysreflexia after spinal cord injury can cause severe hypertension with reflex bradycardia, headache, flushing and sweating; recognising injuries at T6 or above and rapidly identifying bladder, catheter, bowel or heat triggers allows cause-directed treatment.
Adult ADHD may remain hidden behind academic success, detailed routines and suppressed restlessness, while dysregulated attention, anxiety and exhaustion persist; assessment should explore childhood symptoms and functional impact, with treatment tailored across practical strategies, psychological support and individually reviewed medication.
Aminoglycosides, tetracyclines, macrolides and chloramphenicol inhibit bacterial protein synthesis at the 30S or 50S ribosomal subunits, but differ in mechanism, antimicrobial activity, toxicity, interactions and the monitoring required during clinical use.
Outer-shell electrons explain how covalent, ionic and hydrogen bonds form in biological molecules. Water polarity then connects basic chemistry with electrolyte dissolution, osmosis, membrane electrical activity, fat solubility and reversible DNA strand pairing.
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