Classification of Types of Muscles

Which muscle type shows no visible striations under a microscope?

• Cardiac muscle
• Skeletal muscle
• Striated muscle
• Smooth muscle

Why are striations important in cardiac and skeletal muscles, but not needed in smooth muscle?

• Striations are important in cardiac and skeletal muscles for organized contractions, but smooth muscle does not require them due to its different structure and function.
• Cardiac muscle does not have striations, unlike skeletal muscle.
• Smooth muscle has striations for better contraction efficiency.
• Striations are necessary for all muscle types to function properly.

What would happen if cardiac muscle had multiple nuclei like skeletal muscle?

• Cardiac muscle would develop the ability to regenerate quickly.
• Cardiac muscle would function independently without any neural input.
• Cardiac muscle would become stronger and more efficient.
• Cardiac muscle would likely lose its synchronized contraction ability, leading to impaired heart function.

Which feature helps smooth muscles sustain long contractions without fatigue, unlike skeletal muscles?

• Presence of striations

• Fusiform shape and slow, involuntary control

• Peripheral nuclei

• Branched structure

How does the centrally located nucleus in smooth and cardiac muscle fibers reflect their function?

• It allows faster contraction

• It increases the muscle voluntary control

• It provides better internal control for slow, sustained, or rhythmic contractions

• It minimizes the use of energy

What type of nervous system controls skeletal muscle?

• Autonomic Nervous System

• Central Nervous System

• Sympathetic Nervous System

• Somatic Nervous System

If a person loses control over their skeletal muscles, which nervous system might be affected?

• Autonomic nervous system

• Somatic nervous system

• Peripheral nervous system

• Central nervous system

Which muscle type works continuously without fatigue and is only found in one organ?

• Cardiac muscle
• Smooth muscle
• Skeletal muscle
• Voluntary muscle

What is a major functional difference between cardiac and skeletal muscle?

• Cardiac muscle is voluntary; skeletal is involuntary

• Cardiac muscle pumps blood; skeletal enables movement

• Skeletal muscle is found in the heart

• Both have same contraction speed

If the autonomic nervous system is damaged, which muscles would be affected the most?

• Only skeletal muscles

• Only cardiac muscles

• Only smooth muscles

• Both cardiac and smooth muscles