Kinesiology: Muscles Flashcards
What type of muscles are blood vessels?
Smooth
What part of the bone does a tendon attach to?
Periosteum
What type of fascia sheath wraps around an entire muscle belly?
Epimysium
A muscle’s basic contractile unit is known as a:
Myofibril
Myosin
Myofilament
Sarcomere
Sarcomere
What molecule limits a sarcomere’s movement?
Collagen
Titin
Troponin
Tropmyosin
Titin
What property of muscle allows it to develop when stimulated?
Excitability
Extensibility
Contractility
Elasticity
Contractility
What property of muscle allows it to return to its original length after being stretched?
Extensibility
Contractibility
Excitability
Elasticity
Elasticity
What type of muscle contraction occurs when a muscle is elongating?
Eccentric
Myometric
Isometric
Concentric
Eccentric
What type of muscle contraction occurs when a muscle is shortening?
Myotonic
Eccentric
Concentric
Isometric
Concentric
What type of muscle contraction occurs when a muscle changes length?
Isometric
Myometric
Eccentric
Isotonic
Isotonic
What type of muscle contraction involves no joint movement?
Concentric
Isotonic
Eccentric
Isometric
Isometric
What is the term for the muscle’s attachment to the more stationery bone?
Insertion
Origin
Stabilizer
Fixator
Origin
What is the term for a muscle that assists the agonist in producing the main action?
Neutralizer
Antagonist
Synergist
Supporter
Synergist
What group of muscles are designed to perform for long periods of time in semi-contracted state?
Supporter
Antagonist
Postural
Phasic
Posturals
What functional group of muscles performs quick and strong movements?
Postural
Tonic
Phasic
Agonist
Phasic
Agonist
Muscle/ Muscle group that produces the main action. When main action occurs agonist shortens
Synergist
any muscle of assistance to agonist in producing main action (size, leverage, and line of pull make, a synergist is less effective in producing main action but is still of assistance)
Antagonist
executes the action opposite that of the agonist when it shortens
Neutralizer/fixator
muscle that limits any unwanted movements by other muscles
Supporter
does not function near the main action, but supports another part of the body in position while the main action occurs
Postural Muscles
Designed to perform for long periods of time in a semi contracted state
Postural Muscles
Designed to perform for long periods of time in a semi contracted state
Phasic muscles
Will perform movement, sometimes quickly and strongly
Isotonic Contraction
When a muscle changes length, either shortening (concentric) or elongating (eccentric)
Eccentric Contraction
Contraction muscle elongates
Concentric Contraction
Contraction muscle shortens
Isometric Contraction
no joint movement
Origin
The attachment to the more STATIONARY bone
Insertion
Connection to the more MOBILE bone
Revere muscle action
When the origin and insertion switch roles
