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Muscular System

QuestionAnswer
The ability to shorten with force Contractility
The capacity of skeletal muscle to respond to a stimilus Excitability
The ability to be streched Extensibility
Ability to recoil to their orginal resting length after they have been streched Elasticity
Connective tissue sheath Epimysium
Another connective tissue located outside the epimysium, it surrounds and seperates muslces Fascia
A thread like structure that extends from one end of a fiber to another Myofibrils
Thin Actin myofilaments
Thick Myosin myofilaments
The basic structural and functional unit of the muscle Sarcomeres
What is on each side of the z-line? A light band area called I band, it consists of actin
extends the length of myosin, darker central region in each sacromere A band
Another area in the center of the sacromere, which consists of only myosin H zone
The myosin myofilaments are anchored in the center of the sacromere at a dark staining band called The M line
The charge difference across the membrane Resting Membrane Potiential
When a muscle cell is stimulated and the membrane charactristics change breifly Action potential
Nerve cells that carry action potientials to skeletal muscle fibers Motor nuerons
Formed by an enlarged nerve terminal resting in an indentation of the muscle cell membrane Nueromascular junction
Single motor nueron and all the skeletal muscle fibers it intevates is called? Motor unit
The enlarged nerve terminal Presynaptic terminal
Created by: jjusti5
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