BIOPAC® Systems, Inc. Logo

A04 Frog Heart – Cardiac Rate & Contractility

This BSL PRO Lesson explains how to prepare the frog heart and describes the hardware and software setup necessary to record cardiac rate and contractile responses of the frog heart.

Experimental Objectives

  1. To observe and record atrial and ventricular behavior (systole and diastole) in the frog heart.
  2. To observe and record the cardiac phenomena of refraction, ventricular extrasystole, and the compensatory pause in the frog heart.
  3. To observe and record the effect of increasing and decreasing the temperature of cardiac muscle on cardiac rate and contractility.
  4. To observe and record the effects of acetylcholine, atropine, pilocarpine, and epinephrine on the frequency and amplitude of cardiac muscle contraction in the frog.
  5. To observe and record the positive inotropic effect of digitalis on the frog heart.
  6. Optional: To observe the property of myogenicity in the excised frog heart.
  7. Optional: To observe and record the effects of atrioventricular block induced by Stannius ligature in the frog heart.

Tasks Performed by the Student

Videos

Biopac Student Lab Student Download

Student Prep & Distance Learning

Click the link(s) below for sample data and/or lesson procedure video(s), BSL PRO Lesson procedures (PDF) for human lessons*, and graph template files (*.gtl) for BSL PRO Lessons. If more than one .gtl is available, download the .gtl with the _suffix to match BSL version and hardware.

Lesson Hardware

This lesson requires a Biopac Student Lab (BSL) System and the following hardware. If your BSL System does not include all hardware items, expand your system by selecting required items below. For more details, review the Lesson: L# BSL Lessons - see the Lab Manual or launch BSL; A# and H# BSL PRO Lessons, click the PDF link above to review full setup, recording, and analysis procedures.

ItemNameCart
SS12LAVariable Force Transducer, BSLAdd to Cart
Select OptionTension AdjustersAdd to Cart
Spotlight On
Buy MP41 with BSL

Practical Lab Kit with BSL 4 & MP41

BSL Home enables students to safely conduct hands-on physiology labs wherever they are! Purchase this complete lab solution to preserve practical lab experience! Includes MP41 Unit+Lead Set with BSL Home software, EL503 electrodes, WRAP1 self-adhering wrap for EEG lessons, and disposable 9 V battery. For instructors—BSL Home makes it easy for instructors to continue running practical […]

View All
Latest News

New Citations | Logic Games and Meditation: the Key to Unlocking our Brains?

Studying Cognitive Activity with fNIR! The age-old game of chess is known as a thinking man’s game, where foresight, critical thinking, and strategy are required to become a good chess player, and the terms “genius” or “brilliance” are bestowed upon the chess masters of the world. As such, chess is an excellent cognitive tool to […]

Electrocardiography Guide Now Available

BIOPAC’s comprehensive Introductory ECG Guide addresses fundamental to advanced concerns to optimize electrocardiography data recording and analysis. Topics include: ECG Complex; Electrical and Mechanical Sequence of a Heartbeat; Systole and Diastole; Configurations for Lead I, Lead II, Lead III, 6-lead ECG, 12-lead ECG, precordial leads; Ventricular Late Potentials (VLPs); ECG Measurement Tools; Automated Analysis Routines for extracting, […]

Read All
Request a Demonstration
Request a Demonstration