Muscle Contraction Lab Report
muscle contraction
Introduction
For a skeletal muscle fiber to contract, a stimulus must be applied to it. The stimulus is delivered by a nerve cell, or neuron. A neuron has a threadlike process called and axon that my run 91 cm or more to a muscle. A bundle of such fibers from man different neurons composes a nerve. A neuron that stimulates muscle tissue is called a motor neuron.
The motor neuron branches into terminal structures called telodendria that come into close approximation with a portion of the sarcolemma o a muscle fiber (muscle cell). The site where the neuron and muscle fiber meet is called a neuromuscular junction. At this junction the muscle fiber membrane is specialized to form a motor end plate.
The sensitivity of a muscle fiber to …show more content…
When you tap the patellar ligament a simultaneous signal will be sent to the computer. Your instructor will show you how to print out and evaluate the simple muscle twitch obtained using the Flexicomp equipment.
Detailed Setup for the Physiogrip Procedure:
1. Put a small amount of electrode gel on the flat electrode and strap the electrode to the back of your right or left wrist. The wrist area should be cleaned with alcohol prior to attachment of the electrode. Put a small amount of electrode gel on the front of the wrist. This gel will be spread around with the stimulus electrode as you search for the flexor digitorum superficialis motor point. 2. Grasp the pistol grip and apply enough pressure on the trigger to lift the screen plot off the bottom of the screen. 3. Your lab instructor will show you how to analyze and print out your data. Staple your Physiogrip and Flexicomp printouts to the Lab Report #14. Label your data with the following information: a. The stimulus voltage b. The latent period and its duration in seconds c. The contraction period and its duration in
Introduction
For a skeletal muscle fiber to contract, a stimulus must be applied to it. The stimulus is delivered by a nerve cell, or neuron. A neuron has a threadlike process called and axon that my run 91 cm or more to a muscle. A bundle of such fibers from man different neurons composes a nerve. A neuron that stimulates muscle tissue is called a motor neuron.
The motor neuron branches into terminal structures called telodendria that come into close approximation with a portion of the sarcolemma o a muscle fiber (muscle cell). The site where the neuron and muscle fiber meet is called a neuromuscular junction. At this junction the muscle fiber membrane is specialized to form a motor end plate.
The sensitivity of a muscle fiber to …show more content…
When you tap the patellar ligament a simultaneous signal will be sent to the computer. Your instructor will show you how to print out and evaluate the simple muscle twitch obtained using the Flexicomp equipment.
Detailed Setup for the Physiogrip Procedure:
1. Put a small amount of electrode gel on the flat electrode and strap the electrode to the back of your right or left wrist. The wrist area should be cleaned with alcohol prior to attachment of the electrode. Put a small amount of electrode gel on the front of the wrist. This gel will be spread around with the stimulus electrode as you search for the flexor digitorum superficialis motor point. 2. Grasp the pistol grip and apply enough pressure on the trigger to lift the screen plot off the bottom of the screen. 3. Your lab instructor will show you how to analyze and print out your data. Staple your Physiogrip and Flexicomp printouts to the Lab Report #14. Label your data with the following information: a. The stimulus voltage b. The latent period and its duration in seconds c. The contraction period and its duration in