Don't lose your points!
Sign up and save them.
+
Nervous System and Contractions

Nervous System and Contractions

Author: Aaron Mullally
Description:

This lesson will investigate the role of the nervous system in muscle contractions.

(more)
See More
Fast, Free College Credit

Developing Effective Teams

Let's Ride
*No strings attached. This college course is 100% free and is worth 1 semester credit.

28 Sophia partners guarantee credit transfer.

263 Institutions have accepted or given pre-approval for credit transfer.

* The American Council on Education's College Credit Recommendation Service (ACE Credit®) has evaluated and recommended college credit for 25 of Sophia’s online courses. More than 2,000 colleges and universities consider ACE CREDIT recommendations in determining the applicability to their course and degree programs.

Tutorial
Terms to Know
Actin

A protein referred to as the "thin filaments" involved in contractions.

Calcium

An ion necessary for muscle contractions to occur.

Motor Neuron

A neuron that delivers signals to muscles or glands.

Myosin

A protein referred to as the "thick filaments" involved in contractions.

Neuromuscular Junction

The area where the end of a motor neuron comes close to a muscle fiber.

Neurotransmitter

A chemical messenger that carries signals across the synapse between cells.

Sarcomere

The basic units of muscle contractions.

Synapse

The gap between the end of a motor neuron and a muscle fiber.

​Tropomyosin

A protein found on actin filaments that plays a role in muscle contractions.

​Troponin

A protein found on actin filaments that plays a role in muscle contractions.