Multiple Choice
A main function of muscle is to convert chemical energy to mechanical energy. Which property of muscles relates most directly to this function?
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9. Muscle Tissue
Introduction to Muscles and Muscle Tissue
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Which of the following muscle types is/are both voluntary and striated?
A
cardiac muscle only
B
skeletal muscle only
C
smooth muscle only
D
cardiac muscle and skeletal muscle
Verified step by step guidance1
Understand the characteristics of muscle types: Muscles can be categorized into three types: skeletal, cardiac, and smooth. Each type has distinct features regarding control (voluntary or involuntary) and appearance (striated or non-striated).
Define voluntary muscles: Voluntary muscles are those that can be consciously controlled. Skeletal muscles are the primary voluntary muscles in the human body, allowing for movement and posture control.
Define striated muscles: Striated muscles have a banded appearance due to the arrangement of actin and myosin filaments. Both skeletal and cardiac muscles are striated, while smooth muscles are non-striated.
Analyze the options: Cardiac muscle is striated but involuntary, smooth muscle is non-striated and involuntary, and skeletal muscle is both striated and voluntary.
Conclude based on definitions: The muscle type that is both voluntary and striated is skeletal muscle only, as it meets both criteria of being under conscious control and having a striated appearance.
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