Myology and Biomechanics of Movement Flashcards
What are the 3 types of muscle tissue in the body?
Skeletal Muscle
Smooth Muscle
Cardiac Muscle
What is Skeletal Muscle?
‘voluntary muscle’ Muscles that you think about contracting and then the nervous system tells them to do so. Anchored to bone via tendons and is designed to generate skeletal movement
What is Smooth Muscle?
‘involuntary muscle’ found lining the walls of internal organs and structures such as the stomach, intensities and uterus
What is Cardiac Muscle?
also ‘involuntary muscle’ and is found only in the heart
What is an antagonistic pair?
A pair of muscles that when one contracts the other stretches
What does an agonist muscle do?
Contracts/produces movement
What does an antagonist muscle do?
Stretches, acting against or in opposition to the agonist muscle
How are muscles and the nervous system related?
The movement of muscles is coordinated and controlled by the nervous system, that sends a message to the muscles ‘telling’ it to move
Where is the Muscle Spindle Stretch Receptor found?
In the belly of all our skeletal muscles
What does the Muscle Spindle Stretch Receptor detect?
Length in a muscle
What does the Muscle Spindle Stretch Receptor do?
When a muscle stretches, the muscle spindle
that sends a signal to the spinal cord which in turn sends a message to the muscle to contract and resist
the stretch.
Why does the Muscle Spindle resist the stretch?
To protect the muscle from over-stretching or tearing
What is a spinal cord reflex arc?
A neural pathway that controls a reflex, where sensory neurons do not go all the way to the brain, only to the spinal cord
Is the muscle spindle a spinal cord reflex?
Yes
What causes the Muscle Spindle to decrease its firing?
Coming out of the pose slightly
Breath
Time
What are the two types of muscle contractions?
Isometric
Isotonic
What are the two types of isotonic muscle contractions?
Concentric
Eccentric
What is an isometric muscle contraction?
Muscle generates force without changing length
ie. holding a pose
What is an isotonic muscle contraction?
Tension remains unchanged but the muscle length changes
ie. Moving into a pose
What is a concentric muscle contraction?
Muscle contracts to meet resistance, whilst shortening
ie. bicep curl
What is an eccentric muscle contraction?
Muscle contracts whilst lengthening
ie. Putting shopping down
What are the four methods of stretching muscles used in yoga?
Ballistic
Passive
Active
Facilitated
What is ballistic stretching?
A form of passive stretching that uses a bouncing motion
What is passive stretching?
Uses body weight or gravity to create a stretch