TEC1 - Semester 2: MMT Flashcards
Name functions of muscular tissue.
- producing body movements
- stabilizing body positions
- moving substances within body
- generating heat
Name the properties that enable muscular tissue to perform these functions.
- Exitability (ability to respond to stimuli)
- Contractility (ability to contract after stimulation)
- Extensibility (ability to stretch without being damaged)
- Elasticity (ability to return to original length)
What are the different types of muscle contraction?
concentric, static/isometric, eccentric
Describe concentric contraction.
- length of muscle shortens
- muscle force greater than resistance
Describe static/isometric contraction.
- muscle length doesnt change
- muscle force equal to resistance
Describe eccentric contraction.
- muscle lengthens
- muscle force less than resistance
What is an agonist?
the prime mover. muscle whose contraction is mostly responsible for producing movement
What is an antagonist?
muscle whose action opposes a particular agonist (biceps-triceps)
What is a synergist?
muscle that helps larger agonist work efficiently
What is a fixator?
synergists that assist by preventing movement at other joints
What might cause muscle weakness?
injury, neural connection, protective spasm, antagonist is tight or shortened, pain, fear of pain
What is MMT?
- process to evaluate strength of individual muscle or muscle groups in relation to gravity and/or manual resistance
- assesses muscle dysfunction and patient’s progress during therapy
What do the numbers in an MMT scale stand for?
0 = no visible or palpable contraction
1 = flicker of contraction
2 = full ROM, gravity eliminated
3 = full ROM against gravity
4 = full ROM against gravity and with moderate resistance (little give)
5 = full ROM against gravity and with maximum resistance (no give)
What do the different grades indicate?
0: complete paralysis
1: severe paresis
2: moderate to severe paresis
3: moderate paresis/weakness
4: mild paresis. muscle resists but has slight give
5: normal muscle function. no give
What does a weak muscle WITHOUT pain suggest?
neurological damage or rupture of muscle or tendon