What good physiology flashcards test

Physiology is difficult to revise from ordinary question-and-answer cards because many marks depend on a sequence: a change occurs, sensors detect it, an effector responds, and a measurable variable moves. A card that says “What is cardiac output?” may check recall, but it does not check whether you can calculate it or predict what happens when preload changes.

A useful physiology deck should therefore contain four kinds of cards:

  • Definitions and normal values — for example, the equation for mean arterial pressure.
  • Mechanisms — the steps linking a stimulus to a response.
  • Calculations and relationships — such as alveolar ventilation or oxygen delivery.
  • Predictions — what happens to a variable when another variable changes, and why.

Keep one assessable fact on each card. If an answer needs several unrelated paragraphs, split it into linked cards. This makes the review decision meaningful: you can mark a card as correct only when you can produce the required relationship or mechanism without prompting.

For a physiology deck, start with your own lecture notes, practical material and learning objectives. Group the material into boards such as cell physiology, cardiovascular physiology, respiratory physiology, renal physiology and endocrine physiology. Then remove duplicated facts and turn each remaining point into a question with a precise answer.

A physiology board feeding the deck might be organised like this:

Physiology Core cardiovascular, respiratory and renal physiologyStudy
Biomedical scienceCore cardiovascular, respiratory and renal physiology5 sections · 3 columns
Cardiovascular equations
  • Cardiac output = heart rate × stroke volume
  • Mean arterial pressure ≈ diastolic pressure + one-third pulse pressure
  • Pulse pressure = systolic pressure − diastolic pressure
Membrane physiology
  • The resting membrane potential is mainly determined by potassium permeability
  • The Na⁺/K⁺ ATPase moves 3 Na⁺ out and 2 K⁺ into the cell per ATP
  • An action potential follows an all-or-none principle
Respiratory exchange7 due
  • Alveolar ventilation = respiratory rate × (tidal volume − anatomical dead space)
  • Oxygen delivery depends on cardiac output and arterial oxygen content
  • A right shift of the oxyhaemoglobin dissociation curve reduces haemoglobin affinity for oxygen
Endocrine control

A hormone acts through a receptor; receptor location and second-messenger pathway help determine the response.

Renal handling5 due
  • The proximal tubule reabsorbs most filtered sodium and water
  • The loop of Henle establishes the medullary osmotic gradient
  • ADH increases collecting-duct water permeability through aquaporin-2 insertion
This illustrative board shows how cardiovascular, respiratory, renal, membrane and endocrine notes can be separated before cards are written.

The board should not become a storage area for every sentence in a lecture. Keep the facts that support a mechanism, distinguish similar processes or answer a likely short-answer question. A card can link back to the relevant section, but the answer itself should stand alone.

Study this physiology deck now

Work through the cards actively. Read the question, answer aloud or in your head, then reveal the answer. Grade the response according to what you produced, not what you recognised after seeing it:

  • Again — you could not recall the fact or made a material error.
  • Hard — you recalled it slowly, incompletely or with uncertainty.
  • Good — you gave the essential answer without help.
  • Easy — you gave it accurately and promptly.

Do not give yourself a “Good” mark because the answer looked familiar. For equations, say the variables and units. For mechanisms, state the direction of change and the link between each step. For numerical values, include the relevant unit or qualifier.

Here is a deck to work through. The first card is active: answer it before deciding which grade button fits. The remaining cards are listed beneath it and can be opened one at a time.

Cards — Core physiology18 due

What is the relationship between cardiac output, heart rate and stroke volume?

Cardiac output = heart rate × stroke volume.

All 18 cards
What is the relationship between cardiac output, heart rate and stroke volume?Cardiac output = heart rate × stroke volume.
What is the approximate equation for mean arterial pressure?MAP ≈ diastolic pressure + one-third of pulse pressure.
How is pulse pressure calculated?Pulse pressure = systolic pressure − diastolic pressure.
What happens to stroke volume when venous return rises, assuming other factors are unchanged?Stroke volume increases through the Frank–Starling mechanism: greater ventricular filling stretches myocardial fibres and increases the force of contraction within physiological limits.
What is the equation for alveolar ventilation?Alveolar ventilation = respiratory rate × (tidal volume − anatomical dead space).
What happens to alveolar ventilation if respiratory rate doubles while tidal volume and dead space stay constant?It doubles, because respiratory rate is a direct multiplier in the equation.
Name the main stimulus that increases ventilation during ordinary hypercapnia.Raised arterial carbon dioxide, detected mainly through the fall in cerebrospinal-fluid pH produced when CO₂ crosses the blood–brain barrier.
What does a right shift of the oxyhaemoglobin dissociation curve indicate?Reduced haemoglobin affinity for oxygen, promoting oxygen unloading in tissues.
Which nephron segment is highly permeable to water but relatively impermeable to solute?The thin descending limb of the loop of Henle is highly permeable to water; water leaves into the hyperosmotic medulla.
How does ADH increase collecting-duct water reabsorption?ADH binds V2 receptors, increases cAMP and promotes aquaporin-2 insertion into the apical membrane of collecting-duct principal cells.
What is the net movement of ions by one Na⁺/K⁺ ATPase cycle?Three Na⁺ leave the cell and two K⁺ enter the cell, using one ATP molecule.
Which ion has the greatest influence on the resting membrane potential in a typical neuron?Potassium, because resting membrane permeability is greatest for K⁺ and the membrane potential lies relatively close to the potassium equilibrium potential.
What is meant by an all-or-none action potential?Once threshold is reached, a full action potential is generated; increasing stimulus strength does not increase its amplitude, although it may increase firing frequency.
What is the main immediate buffer in extracellular fluid?The bicarbonate buffer system, involving the reversible reaction CO₂ + H₂O ⇌ H₂CO₃ ⇌ H⁺ + HCO₃⁻.
What is the expected respiratory compensation for a primary metabolic acidosis?Increased ventilation lowers arterial PCO₂, reducing carbonic acid and limiting the fall in pH.
Where is most filtered glucose normally reabsorbed?In the proximal tubule, mainly through sodium–glucose cotransport on the apical membrane and facilitated transport across the basolateral membrane.
What is the difference between clearance and filtration rate?Clearance is the plasma volume cleared of a substance per unit time; GFR is the volume of filtrate formed by the glomeruli per unit time.
Which receptor class is usually intracellular: peptide-hormone receptors or steroid-hormone receptors?Steroid-hormone receptors are usually intracellular because steroid hormones cross the lipid bilayer and alter gene transcription through receptor complexes.
This illustrative flashcard drill contains 18 single-fact physiology cards, with the first card ready to answer and grade.

That is a MySummaries deck, filled with physiology material. Yours is written from your own notes. Start free

After one pass, do not immediately repeat every card. Use the grade to control the interval. Cards marked Again should be repaired straight away. Cards marked Hard need another attempt later in the session. Good and Easy cards should return according to the spaced-repetition schedule.

The important distinction is between a recall failure and a reasoning failure. If you forget the equation for alveolar ventilation, the card needs factual review. If you know the equation but predict that doubling respiratory rate always doubles alveolar ventilation without considering dead space, you need a separate calculation or prediction card.

Cut the deck from a must-not-miss core

Before adding more detail, make a short core list. It should contain the relationships that organise a topic, not every normal value in your notes. For example, cardiovascular, respiratory and renal physiology can be reduced to these anchors:

Must not miss coreCore physiology
Cardiac output = heart rate × stroke volume; arterial pressure depends on cardiac output and systemic vascular resistance
Alveolar ventilation = respiratory rate × (tidal volume − anatomical dead space)
ADH increases collecting-duct water permeability by promoting aquaporin-2 insertion through V2-receptor signalling
The Na⁺/K⁺ ATPase moves 3 Na⁺ out and 2 K⁺ into the cell per ATP
Metabolic acidosis is compensated by increased ventilation, which lowers arterial PCO₂
This illustrative core checklist contains five relationships that support a wider physiology flashcard deck.

Use the core to test whether a new card earns its place. A card is worth adding when it explains one of these relationships, distinguishes it from a similar process or exposes a mistake you repeatedly make. It is less useful when it merely repeats a sentence already represented by two stronger cards.

Repair cards that keep failing

A card that is repeatedly missed may be badly written rather than simply difficult. Check whether it contains two questions, uses an undefined abbreviation or expects an answer with no clear boundary. Rewrite it into a smaller unit, add the missing comparison, or create a “why” card beside the original.

For example, “Explain renal concentration” is too broad. Separate it into cards on the descending limb, the thick ascending limb, the medullary gradient and ADH. This gives each mechanism a clear retrieval target.

When a card has been missed twice, put the specific gap into a remediation tray rather than hiding it among hundreds of new cards:

Remediation tray

You lost this card twice: why does doubling respiratory rate not necessarily double alveolar ventilation? State the equation and explain the role of anatomical dead space.

Add cardDismiss
This illustrative remediation tray shows a targeted prompt for a repeated respiratory-physiology error.

Answer the tray card in full. A strong response would state that alveolar ventilation equals respiratory rate multiplied by tidal volume minus anatomical dead space, so the result depends on the volume reaching alveoli on each breath. If the breathing becomes rapid and shallow, a larger proportion of each breath may occupy dead space, limiting the increase in effective ventilation.

A workable review routine

For a 30-minute session, use this sequence:

  1. Five minutes: review the core relationships without opening answers.
  2. Fifteen minutes: work through due cards, grading each honestly.
  3. Five minutes: redo cards marked Again and answer one tray prompt.
  4. Five minutes: add or rewrite no more than three cards from today’s notes.

At the end, look at the pattern in your errors. If most failures concern equations, add prediction cards with changed variables. If they concern mechanisms, make the question narrower and require the direction of change. If they concern normal values, pair each value with its physiological meaning rather than memorising an isolated number.

The aim is not the largest physiology deck. It is a deck that makes you retrieve the relationships you will need to explain, calculate and predict. A smaller set of precise cards, reviewed repeatedly and repaired when it fails, is more useful than a catalogue of copied lecture sentences.

How MySummaries helps

MySummaries can turn your physiology PDFs, slides and photographed notes into a revision board, then generate a spaced-repetition deck from the sections you choose. You can keep the equations, mechanisms and prediction questions together, review cards on their schedule and send repeated errors to a focused remediation tray.

Start at portal.mysummaries.app.