Anatomy and physiology labs

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Introduction to ScienceExperiment 2The Neuromuscular Junction Experiment Inventory

Materials Neuromuscular Slide Viewer

© eScience Labs, 2016

EXPERIMENT 2: THE NEUROMUSCULAR JUNCTION

Each skeletal muscle is connected to the nervous system by motor end units. When the neurotransmitter acetylcholine is re leased at this site, the muscle fiber depolarizes, resulting in calcium ion release from the sarcoplasmic reticulum. The presence of Ca2+ triggers the interaction of actin and myosin filaments and the contraction of the myofiber as all of the myofibrils contract simultaneously.

PROCEDURE

1. Open the slide viewer to examine the digital slide images of the neuromuscular junction.

2. Answer the post-lab questions.