Electrical-mechanical coupling — Flashcards

10 flashcards

After myosin binds a new ATP molecule in muscle contraction, hydrolysis of the new ATP molecule to ADP allows the myosin head to adopt a _____ position, ready for a new contraction cycle.

Phase 0 of the myocardial action potential is caused by opening of voltage-gated _____ channels

The calcium channels that open during the plateau phase (myocardial action potential) are _____-type channels

Which phase of the cardiac cycle (systole or diastole) is preferentially shortened with increased heart rate? _____

Cardiac contractility correlates directly with intracellular _____ concentration

Where in the heart is conduction velocity the slowest? _____

Inspiration delays closure of the _____ valve which causes splitting of the S2 heart sound

During rapid ventricular ejection, the ventricular pressure becomes greater than aortic pressure and the _____ valve opens

What phase of the cardiac cycle begins during the QRS complex on ECG? _____

Hint: specific

#10

Parasympathetic stimulation decreases atrial contractility via _____ receptors

Electrical-mechanical coupling US Medical PG Flashcards - Medical Study Cards

Master Electrical-mechanical coupling with OnCourse flashcards. These spaced repetition flashcards are designed for medical students preparing for NEET PG, USMLE Step 1, USMLE Step 2, MBBS exams, and other medical licensing examinations.

Electrical-mechanical coupling Flashcard Deck - 10 Cards

Flashcard 1: After myosin binds a new ATP molecule in muscle contraction, hydrolysis of the new ATP molecule to ADP allows the myosin head to adopt a _____ position, ready for a new contraction cycle.

Answer: high-energy, "cocked"

Flashcard 2: Phase 0 of the myocardial action potential is caused by opening of voltage-gated _____ channels

Answer: Na+

Flashcard 3: The calcium channels that open during the plateau phase (myocardial action potential) are _____-type channels

Answer: L

Flashcard 4: Which phase of the cardiac cycle (systole or diastole) is preferentially shortened with increased heart rate? _____

Answer: Diastole

Flashcard 5: Cardiac contractility correlates directly with intracellular _____ concentration

Answer: Ca2+

Flashcard 6: Where in the heart is conduction velocity the slowest? _____

Answer: AV node

Extra: https://onlinemeded.org/spa/cardiac/arrhythmias/acquire?ref=anki

Flashcard 7: Inspiration delays closure of the _____ valve which causes splitting of the S2 heart sound

Answer: pulmonic

Extra: Watch associated Bootcamp video [https://app.bootcamp.com/med-school/cardiology/videos/cardiac-cycle?index=4] https://onlinemeded.org?ref=anki

Flashcard 8: During rapid ventricular ejection, the ventricular pressure becomes greater than aortic pressure and the _____ valve opens

Answer: aortic

Extra: Watch associated Bootcamp video [https://app.bootcamp.com/med-school/cardiology/videos/cardiac-cycle?index=6] https://onlinemeded.org?ref=anki

Flashcard 9: What phase of the cardiac cycle begins during the QRS complex on ECG? _____

Answer: Isovolumetric ventricular contraction

Extra: Watch associated Bootcamp video [https://app.bootcamp.com/med-school/cardiology/videos/cardiac-cycle?index=6] https://onlinemeded.org?ref=anki

Flashcard 10: Parasympathetic stimulation decreases atrial contractility via _____ receptors

Answer: M2

Extra: Watch associated Bootcamp video [https://app.bootcamp.com/med-school/cardiology/videos/Cardiac%20Conductive%20Physiology?index=8] https://onlinemeded.org/spa/cardiac/arrhythmias/acquire?ref=anki

Keywords: Electrical-mechanical coupling flashcards, medical flashcards, NEET PG preparation, USMLE Step 1 flashcards, Anki alternative, spaced repetition medical, OnCourse flashcards

Electrical-mechanical coupling Flashcards for USMLE

Study 10 flashcards on Electrical-mechanical coupling for USMLE Physiology. These active recall cards cover the key concepts, clinical associations, and high-yield facts from this chapter of Cardiac cycle. Each card is designed to test your understanding rather than just recognition, building stronger and more durable memories for exam day.

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There are 10 flashcards for Electrical-mechanical coupling, covering the key concepts, clinical correlations, and high-yield facts from this chapter of Cardiac cycle.

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