10 Questions
What is the main characteristic that distinguishes glycolytic muscles from oxidative muscles?
Energy production pathways
What is the primary function of skeletal muscles?
General functions
Which type of skeletal muscle fiber has the slowest contraction time?
Type I
What determines the ratio of oxidative to glycolytic muscles?
Genetics
What is a characteristic of Type IIb skeletal muscle fibers?
Very fast contraction time
What is the primary energy production pathway used by oxidative muscles?
Aerobic
Which type of skeletal muscle fiber is suitable for long-term endurance activities?
Type I
What is a characteristic of glycolytic muscles?
Pale color and low vascularity
What determines the size of the motor neuron in skeletal muscles?
Fiber type
What is the primary difference between Type IIa and Type IIx fibers?
Contraction time
Study Notes
Muscle Physiology
- Muscle function is a crucial aspect of muscle physiology
Muscle Characteristics
- Muscle tissue types include skeletal, cardiac, and smooth muscle
Skeletal Muscle
- Skeletal muscle has various types, including oxidative and glycolytic muscles
- Ratio of oxidative to glycolytic muscles is dependent on genetics
- Glycolytic muscles:
- Have 3 types: Type IIa, IIb, and IIx
- Have fast contraction action
- Are generally paler in color due to lower amounts of myoglobin and vascularity
- Utilize anaerobic pathways for energy
- Not suitable for long-term endurance activities
- Oxidative muscles:
- Use aerobic processes
- Suitable for long-term endurance activities
- Are highly vascular and have more myoglobin
Skeletal Muscle Types
- Type I fibers:
- Have slow contraction time
- Have small motor neurons
- Have high resistance to fatigue
- Suitability for long-term aerobic activities
- Type IIa fibers:
- Have moderately fast contraction time
- Have medium-sized motor neurons
- Have fairly high resistance to fatigue
- Suitability for short-term anaerobic activities
- Type IIx fibers:
- Have fast contraction time
- Have large motor neurons
- Have intermediate resistance to fatigue
- Suitability for short-term anaerobic activities
- Type IIb fibers:
- Have very fast contraction time
- Have very large motor neurons
- Have low resistance to fatigue
- Suitability for short-term anaerobic activities
This quiz covers muscle physiology, including skeletal, cardiac, and smooth muscle functions, characteristics, and types. It also covers muscle contraction strength and adaptive responses.
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
