Card Set Information
The Muscular system: How muscles work
The shortening of a muscle is called
Concentric Contraction: This is the Positive phase during which the beginner exhales for 2 seconds.
The controled lengening of a muscle is called...
The Ecentric phase of contraction: This is the negative phase during which the beginner inhales for 4 seconds
The motor unit is responsible for ________ and consists of:
Muscular contraction and consists of the nerve and the muscle fiber it innervates
What is the innervation ratio?
number of muscle fibers/motor neuron
Law of all-or-none
When a muscle fiber recieves a signal to contract, either all fibers innervated will contract or none will contract