Muscular Flashcards
What is key difference between insertion and origin
More movable bone is insertion, more stable bone is origin
What is an example of a strap muscle
Sternocleidomastoid
What is an example of a fusiform muscle
Biceps
What is an example of a rhomboidal muscle
Rhomboids
What is an example of a triangular muscle
Pectoralis major
What is an example of a unipennate muscle
Tibialis posterior muscle of the ankle
Example of bipennate muscle
Rectus femoris muscle of the hip
Example of multipennate muscles
Deltoid
What is the word for the ability to respond to stimulus
Irritability
What is the term for the muscles ability to shorten for contract
Contractility
What is the term for the muscles ability to stretch or Lengthen
Extensibility
What is the term for the muscles ability to recoil or return to normal resting length
Elasticity
What is tension
The force built up within a muscle
What is tone
Slight tension that is presently in muscle at all times
What is excursion
The distance from maximum elongation to maximum shortening
What is passive insufficiency
Occurs when a muscle cannot be elongated any farther without damage to its fibers
What is difference between agonist and antagonist
Agonist is the muscle or muscle group that causes the motion, the antagonist is a muscle that performs the opposite motion of the agonist
When does cocontraction occur
When there is a need for accuracy. It is when the antagonist contracts at the same time as the agonist
What is closed kinetic chain
When the distal segment is fixed and the proximal segment moves
Push-up
What is open kinetic chain
When the distal segment is free to move while the proximal segment remains stationary
What are the three types of muscle tissue
Smooth, cardiac, and skeletal
What are smooth muscles
Nonstriated muscle that is involuntary. Moves substances throughout the organs
What to skeletal muscle
Voluntary muscles, that allow the extremities to move through a full range of motion
