Biomechanics Chapter 2
What are the four properties of muscle tissue?
1. Irritability or excitability 2. Contractility 3. Extensibility 4. Elasticity
Which of the following is affected by the shape of a muscle?
Ability of a muscle to produce force
Extensibility
Ability of muscle to be passively stretched beyond its normal resting length
Contractility
Ability of muscle to contract and develop tension or internal force against resistance when stimulated
Elasticity
Ability of muscle to return to its original length following stretching
Which of the following is a true statement regarding stabilizer muscles?
Are essential in establishing a relatively firm base for the more distal joints to work form when carrying out movements
Muscles provide all of the following except?
Attachment points for other muscles
Which of the following is a true statement regarding agonist muscles?
Causes a joint motion through a specified plane of motion when contracting concentrically
Which of the following is not true regarding concentric muscle contractions?
Commonly described as being a negative type of contraction
Which of the following is not a property of skeletal muscle tissue that allows for force production and movement about joints?
Constrictability
Which of the following is true regarding concentric muscle contractions?
Contractions cause movement against gravity or resistance
Which of the following is a proprioceptor associated with muscle tissue?
Golgi Tendon Organ
Which of the following is not true with respect to an isometric muscle contraction?
Is considered to be a dynamic contraction
Which of the following is not a true statement regarding isokinetic exercise?
Is not another type or classification of muscle contraction
Which of the following is a true statement regarding synergist muscles?
Known as guiding muscles
Muscles are usually named due to all of the following except?
Nerve
What occurs when an antagonistic muscle becomes stretched to the point at which it can no longer lengthen and allow movement
Passive insufficiency
Irritability/Excitability
Property of muscle being sensitive or responsive to chemical, electrical, or mechanical stimuli
The subconscious mechanism by which the body is able to regulate posture and movement is?
Proprioception
Which of the following is true regarding an eccentric muscle action?
Results in the joint angle changing in the direction opposite that of the resistance or external force
Which of the following is not a true statement regarding antagonist muscles?
These muscles work against agonist muscles by contracting and preventing movement
Which of the following is not true regarding and eccentric muscle action?
Typically called a positive type of muscle contraction
