Deltoid arm abduction Gastrocnemius and Soleus plantar flexion Origin term for starting point of muscle that would not move during muscle contraction Excitation- contraction coupling entire process of activating the NMJ to contraction of muscle Endomysium areolar CT; around sarcolemma of muscle fibers Latent period starts when sarcolemma is activated; ends when calcium reaches troponin Isometric muscle contraction where there is no movement Sarcolemma plasma membrane for muscle cells Agonist main mover of a movement Perimysium dense irregular CT; fascicle level I band part of sarcomere with only thin filaments Latissimus Dorsi arm extension Contractility ability to shorten muscle tissue Cardiac muscle involuntary, uninucleate, and striated A band 'dark' zone that is made up of H zone and zone of overlap Sarcoplasmic Reticulum (SR) organelle specific to muscle fibers that allows for calcium release Z discs structure of sarcomere that marks the ends Smooth muscle involuntary, uninucleate, and non- striated Myosin thick filaments Biceps Brachii flexes forearm Insertion term for ending point of muscle that will move during muscle contraction Extensibility ability to stretch muscle tissue without damaging it Acetylcholine (ACh) neurotransmitter that activates the sarcolemma Hamstrings thigh extensors and knee flexors Masseter mastication Muscle fiber another name for muscle cells Zygomaticus smiling muscle Overload principle muscle will build up to prevent muscle damage from occurring again Contraction period starts when calcium binds with troponin and ends when they unbind Buccinator sucks in cheeks Myofibrils general name for proteins within muscle fibers Fast Oxidative Fibers moderately fatigable and will normally use aerobic respiration; has ability to use some anaerobic respiration Actin thin filaments Tendon Indirect attachment of muscles to each other using a rope- like tissue Calcium chemical that allow ACh release and troponin binding Aponeurosis Indirect attachment of muscles to each other using a sheet- like tissue H zone part of sarcomere with only thick filaments Epimysium dense irregular CT; surrounds whole muscles Fast Glycolytic Fibers easily fatigable but good for short, powerful movements Muscle tone the idea that muscle is always somewhat activated T- Tubule organelle specific to muscle fibers that allows communication Troponin regulatory protein that binds with calcium Action Potential change of RMP that causes activation of a cell Tropomyosin regulatory protein that blocks binding sites on actin Tibialis Anterior dorsiflexion Palmaris Longus can be seen when you oppose fingers and flex wrist Sarcomere functional unit of muscle tissue Skeletal muscle voluntary, multinucleate, and striated Isotonic muscle contraction where the length changes Internal Intercostals pushes out air for exhalation Concentric muscle contraction where muscle is shortening Myoglobin protein within muscle cell that is responsible for holding oxygen Sternocleidomastoid turns head laterally M line middle part of sarcomere made of supporting proteins Mentalis wrinkles the chin Frontalis raises eyebrows Trapezius stabilizes and depresses/elevates scapula Synergist muscle that helps the main mover do its function Excitability muscle ability to respond to stimuli Motor unit a motor neuron and all of the muscle fibers it supplies Pectoralis Major arm adduction Elasticity recoil ability of muscle tissue Cross- bridge cycle starts with calcium binding with troponin, and ends when they unbind Antagonist muscle that does the opposite function of a main mover; example is biceps and triceps Triceps Brachii extends forearm Orbicularis Oculi closes eyes Summation the combination of messages/action potentials onto a muscle fiber Orbicularis Oris closes mouth Fascicle group of muscle cells Relaxation period period where myosin and actin filaments are sliding back to their original positions Gluteus Maximus biggest muscle in the body; thigh extensor External Intercostals opens ribcage for inspiration Twitch muscle contraction activated by only one action potential Eccentric muscle contraction where muscle is enlongating Slow Oxidative Fibers fibers that solely rely on cellular respiration; fatigue- resistant Quadriceps thigh flexors and knee extensors Platysma seen when straining the neck Neuromuscular Junction (NMJ) where the end of a motor neuron connects with the sarcolemma of a muscle cell Sartorius longest muscle in the body; thigh flexion Deltoid arm abduction Gastrocnemius and Soleus plantar flexion Origin term for starting point of muscle that would not move during muscle contraction Excitation- contraction coupling entire process of activating the NMJ to contraction of muscle Endomysium areolar CT; around sarcolemma of muscle fibers Latent period starts when sarcolemma is activated; ends when calcium reaches troponin Isometric muscle contraction where there is no movement Sarcolemma plasma membrane for muscle cells Agonist main mover of a movement Perimysium dense irregular CT; fascicle level I band part of sarcomere with only thin filaments Latissimus Dorsi arm extension Contractility ability to shorten muscle tissue Cardiac muscle involuntary, uninucleate, and striated A band 'dark' zone that is made up of H zone and zone of overlap Sarcoplasmic Reticulum (SR) organelle specific to muscle fibers that allows for calcium release Z discs structure of sarcomere that marks the ends Smooth muscle involuntary, uninucleate, and non- striated Myosin thick filaments Biceps Brachii flexes forearm Insertion term for ending point of muscle that will move during muscle contraction Extensibility ability to stretch muscle tissue without damaging it Acetylcholine (ACh) neurotransmitter that activates the sarcolemma Hamstrings thigh extensors and knee flexors Masseter mastication Muscle fiber another name for muscle cells Zygomaticus smiling muscle Overload principle muscle will build up to prevent muscle damage from occurring again Contraction period starts when calcium binds with troponin and ends when they unbind Buccinator sucks in cheeks Myofibrils general name for proteins within muscle fibers Fast Oxidative Fibers moderately fatigable and will normally use aerobic respiration; has ability to use some anaerobic respiration Actin thin filaments Tendon Indirect attachment of muscles to each other using a rope- like tissue Calcium chemical that allow ACh release and troponin binding Aponeurosis Indirect attachment of muscles to each other using a sheet- like tissue H zone part of sarcomere with only thick filaments Epimysium dense irregular CT; surrounds whole muscles Fast Glycolytic Fibers easily fatigable but good for short, powerful movements Muscle tone the idea that muscle is always somewhat activated T- Tubule organelle specific to muscle fibers that allows communication Troponin regulatory protein that binds with calcium Action Potential change of RMP that causes activation of a cell Tropomyosin regulatory protein that blocks binding sites on actin Tibialis Anterior dorsiflexion Palmaris Longus can be seen when you oppose fingers and flex wrist Sarcomere functional unit of muscle tissue Skeletal muscle voluntary, multinucleate, and striated Isotonic muscle contraction where the length changes Internal Intercostals pushes out air for exhalation Concentric muscle contraction where muscle is shortening Myoglobin protein within muscle cell that is responsible for holding oxygen Sternocleidomastoid turns head laterally M line middle part of sarcomere made of supporting proteins Mentalis wrinkles the chin Frontalis raises eyebrows Trapezius stabilizes and depresses/elevates scapula Synergist muscle that helps the main mover do its function Excitability muscle ability to respond to stimuli Motor unit a motor neuron and all of the muscle fibers it supplies Pectoralis Major arm adduction Elasticity recoil ability of muscle tissue Cross- bridge cycle starts with calcium binding with troponin, and ends when they unbind Antagonist muscle that does the opposite function of a main mover; example is biceps and triceps Triceps Brachii extends forearm Orbicularis Oculi closes eyes Summation the combination of messages/action potentials onto a muscle fiber Orbicularis Oris closes mouth Fascicle group of muscle cells Relaxation period period where myosin and actin filaments are sliding back to their original positions Gluteus Maximus biggest muscle in the body; thigh extensor External Intercostals opens ribcage for inspiration Twitch muscle contraction activated by only one action potential Eccentric muscle contraction where muscle is enlongating Slow Oxidative Fibers fibers that solely rely on cellular respiration; fatigue- resistant Quadriceps thigh flexors and knee extensors Platysma seen when straining the neck Neuromuscular Junction (NMJ) where the end of a motor neuron connects with the sarcolemma of a muscle cell Sartorius longest muscle in the body; thigh flexion
(Print)
arm abduction
plantar flexion
term for starting point of muscle that would not move during muscle contraction
entire process of activating the NMJ to contraction of muscle
areolar CT; around sarcolemma of muscle fibers
starts when sarcolemma is activated; ends when calcium reaches troponin
muscle contraction where there is no movement
plasma membrane for muscle cells
main mover of a movement
dense irregular CT; fascicle level
part of sarcomere with only thin filaments
arm extension
ability to shorten muscle tissue
involuntary, uninucleate, and striated
'dark' zone that is made up of H zone and zone of overlap
organelle specific to muscle fibers that allows for calcium release
structure of sarcomere that marks the ends
involuntary, uninucleate, and non-striated
thick filaments
flexes forearm
term for ending point of muscle that will move during muscle contraction
ability to stretch muscle tissue without damaging it
neurotransmitter that activates the sarcolemma
thigh extensors and knee flexors
mastication
another name for muscle cells
smiling muscle
muscle will build up to prevent muscle damage from occurring again
starts when calcium binds with troponin and ends when they unbind
sucks in cheeks
general name for proteins within muscle fibers
moderately fatigable and will normally use aerobic respiration; has ability to use some anaerobic respiration
thin filaments
Indirect attachment of muscles to each other using a rope-like tissue
chemical that allow ACh release and troponin binding
Indirect attachment of muscles to each other using a sheet-like tissue
part of sarcomere with only thick filaments
dense irregular CT; surrounds whole muscles
easily fatigable but good for short, powerful movements
the idea that muscle is always somewhat activated
organelle specific to muscle fibers that allows communication
regulatory protein that binds with calcium
change of RMP that causes activation of a cell
regulatory protein that blocks binding sites on actin
dorsiflexion
can be seen when you oppose fingers and flex wrist
functional unit of muscle tissue
voluntary, multinucleate, and striated
muscle contraction where the length changes
pushes out air for exhalation
muscle contraction where muscle is shortening
protein within muscle cell that is responsible for holding oxygen
turns head laterally
middle part of sarcomere made of supporting proteins
wrinkles the chin
raises eyebrows
stabilizes and depresses/elevates scapula
muscle that helps the main mover do its function
muscle ability to respond to stimuli
a motor neuron and all of the muscle fibers it supplies
arm adduction
recoil ability of muscle tissue
starts with calcium binding with troponin, and ends when they unbind
muscle that does the opposite function of a main mover; example is biceps and triceps
extends forearm
closes eyes
the combination of messages/action potentials onto a muscle fiber
closes mouth
group of muscle cells
period where myosin and actin filaments are sliding back to their original positions
biggest muscle in the body; thigh extensor
opens ribcage for inspiration
muscle contraction activated by only one action potential
muscle contraction where muscle is enlongating
fibers that solely rely on cellular respiration; fatigue-resistant
thigh flexors and knee extensors
seen when straining the neck
where the end of a motor neuron connects with the sarcolemma of a muscle cell
longest muscle in the body; thigh flexion
