Muscular System Flashcards
Synergist Muscle:
a- contract to cause an action
b- Stretch yield to the action of the agonist
c- stabilise the origin of the agonist
d- contract to stabilise intermediate joints
d
Name the three muscle types
Skeletal
Cardiac
Smooth
What are the four structure types of skeletal muscle
Long
Cylindrical
Multinucleate
Striations
What are the four functions of skeletal muscles
Voluntary movement
Locomotion
Manipulation of the environment
Facial expressions
Name the three structures of cardiac muscles
Branching
Striated
Uninucleated- intercalated discs
What are the two functions of cardiac muscle
It contracts and propel blood into circulation
Involuntary control
What are the three structures of smooth muscle
Spindle shape with central nuclei
No striation
Cells arranged closely to form sheets
What are the two functions of smooth muscle
propels substances along internal passageway
Involuntary control
What are the general functions of muscle tissue (5)
movement
posture
Regulate organ volume
Moving substances in the body
Heat production
What type of property is this of muscle tissue
Respond to stimuli
Excitability
What type of property is this of muscle tissue
Ability to contract when stimulated
Contractibility
What type of property is this for muscle tissue
Ability to stretch or extend
Extensibility
What type of property is this for muscle tissue
Ability to return to original length after stretching
Elasticity
What is origin
One end of the muscle attached to a structure such as bone that remains stationary
What is insertion
opposite end of origin where the muscle is moved by contraction
