Preparing for the PTCE (Pharmacy Technician Certification Exam) exam? Physiology is one of the areas our deck drills hardest: 20 of its 1000 flashcards focus on physiology, covering topics like Inferior Vena Cava, EPO, Myelin Sheath. Try the sample questions below — every card is a real question-and-answer pair from the full deck.
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What is the correct physiological sequence of electrical conduction through the heart that ensures coordinated ventricular contraction?
Show answer →The sequence is: SA Node (pacemaker) -> AV Node -> Bundle of His -> Right and Left Bundle Branches -> Purkinje Fibers. The SA node initiates the impulse. The AV node provides a critical delay (approx. 0.1s) allowing the atria to contract and fill the ventricles before they squeeze. PTCB Exam Strategy: Distinguish between the SA node (pacemaker) and AV node (delay). Common distractor: Reversing the order of the Bundle of His and Purkinje fibers. Clinical Pearl: Antiarrhythmic drugs often target specific phases of this electrical cycle to correct rhythm disturbances.
Trace the path of deoxygenated blood through the heart, starting from the Superior/Inferior Vena Cava until it reaches the lungs.
Show answer →Vena Cava -> Right Atrium -> Tricuspid Valve -> Right Ventricle -> Pulmonary Valve -> Pulmonary Artery -> Lungs. PTCB Exam Strategy: Remember that the Pulmonary Artery is the ONLY artery in the adult body that carries deoxygenated blood. The Right side of the heart handles deoxygenated blood (pulmonary circulation), while the Left side handles oxygenated blood (systemic circulation). Valvular order is a common test point—Tricuspid is on the Right (both have 'R').
Beyond waste filtration, the kidneys produce Erythropoietin (EPO). What is the physiological purpose of this hormone in the cardiovascular system?
Show answer →Erythropoietin (EPO) is released by the kidneys in response to hypoxia (low oxygen levels). It travels to the bone marrow to stimulate the production of Red Blood Cells (RBCs), thereby increasing the oxygen-carrying capacity of the blood. PTCB Exam Strategy: Patients with Chronic Kidney Disease (CKD) often suffer from anemia because their kidneys cannot produce enough EPO. This is why synthetic EPO (e.g., Epoetin alfa) is frequently dispensed in pharmacies for renal patients.
In Parkinson's Disease, the degeneration of neurons in the substantia nigra leads to a deficiency of which neurotransmitter, resulting in tremors and bradykinesia?
Show answer →Dopamine. Parkinson's is characterized by the loss of dopaminergic neurons, creating an imbalance between dopamine (inhibitory) and acetylcholine (excitatory) in the basal ganglia. Treatment focuses on increasing dopamine levels (e.g., Levodopa) or inhibiting acetylcholine. Exam Strategy: Don't confuse this with Alzheimer's, which primarily involves a deficiency in Acetylcholine. PTCE tests the physiological basis for why specific drug classes (dopamine agonists vs. cholinesterase inhibitors) are used.
What is the primary function of the Myelin Sheath found on the axons of many neurons, and how does its destruction affect nerve impulse transmission?
Show answer →It acts as an electrical insulator and increases the speed of impulse transmission (saltatory conduction). When myelin is damaged (as in Multiple Sclerosis), nerve impulses slow down or stop, leading to neurological deficits. Clinical Pearl: Many medications for MS (like interferons or glatiramer acetate) aim to reduce the immune system's attack on this sheath. PTCE may link the physiology of the neuron to the pathology of MS and its related medications.
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Try 30 free PTCE cards firstThe full PTCE deck contains 1000 flashcards, and 20 of them focus on physiology. This page shows 5 free samples.
Our PTCE deck dedicates 20 of 1000 cards (2%) to physiology — always cross-check the official PTCB exam outline for the current blueprint weighting.
Yes — the samples on this page are free, and the PTCE preview page has 30 more free cards. Full access to all 1000 cards is a one-time $7.
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