Even though they are made of smooth muscle fibers, byssal muscles share some of the same characteristics as vertebrate skeletal muscle. Byssal muscles show individual muscle twitches, mechanical summation, and tetanus.

In this experiment, students will record the phasic and tonic responses of a byssal muscle to individual
and repeated stimulus pulses, and the effects of the direct application of acetylcholine and serotonin to
the muscles.

View the Lab (.pdf)

See other popular invertebrate labs from iWorx

Crayfish Heart

Earthworm Smooth Muscle Contractions

Crayfish Gut Pharmacology

Cockroach Leg Mechanoreceptors

Action Potentials in Earthworm

See iWorx complete course catalog


Combination Animal/Human Physiology Teaching Kit
AHK-TA Combination Animal/Human Physiology Teaching kit
  • Perform more than 100 human and animal lab exercises
  • Quick lab set-up
  • Integrated pre-calibrated sensors
  • Built-in high voltage stimulator
  • Unique iWire plug and play sensors
  • Easy-to-use software
  • and, more innovative teaching labs

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