Muscle Physiology Quiz

What type of muscle contraction occurs when the muscle does not shorten during contraction while tension is increasing?

• Isotonic contraction

• Eccentric contraction

• Isometric contraction

• Concentric contraction

Which type of muscle fiber is characterized by high endurance and the ability to maintain contractions for long periods?

• Type IIb fibers

• Slow Oxidative fibers

• Fast Oxidative fibers

• Fast Glycolytic fibers

What is the primary function of agonist muscles?

• To oppose the action of prime movers

• To stabilize joints

• To contract and perform a certain action

• To assist in the movement of prime movers

Which type of contraction is characterized by the muscle lengthening while contracting?

• Isometric contraction

• Eccentric contraction

• Concentric contraction

• Static contraction

What is the term for the tension developed in a muscle when it is lengthened but not stimulated?

• Isometric tension

• Passive tension

• Total tension

• Active tension

Which type of muscle action works to cancel the undesired action of other muscles?

• Agonists

• Fixators

• Synergists

• Neutralizers

What is the recommended duration for sustaining an isometric contraction to increase strength?

• At least 10 seconds

• At least 6 seconds

• At least 4 seconds

• At least 2 seconds

Which type of muscle fiber is specialized for powerful, brief contractions and relies on anaerobic glycolysis?

• Type IIa fibers

• Slow Oxidative fibers

• Fast Oxidative fibers

• Fast Glycolytic fibers

What is the effect of regular aerobic exercise on muscles?

• Increased number of muscle fibers

• Decreased resistance to fatigue

• Increased endurance and flexibility

• Increased muscle size only

Which of the following is NOT a contraindication for isometric exercises?

• Hypertension

• Severe pain in joints

• Heart Diseases

• Arthritis