Podcast
Questions and Answers
Which muscle type is characterized by being under voluntary control?
Which muscle type is characterized by being under voluntary control?
What is the primary nerve supply for cardiac muscle?
What is the primary nerve supply for cardiac muscle?
Which part of a muscle is known as the fixed end?
Which part of a muscle is known as the fixed end?
How do skeletal muscle fibers appear?
How do skeletal muscle fibers appear?
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What is a function of tendons in muscles?
What is a function of tendons in muscles?
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Study Notes
Muscle Types
- Muscles are categorized as voluntary or involuntary
- Voluntary muscles are controlled consciously, while involuntary muscles function automatically.
- Skeletal muscles are voluntary, controlled by the somatic nervous system. These muscles are found in the upper and lower limbs and head/neck.
- Cardiac muscles are involuntary and have a rectangular shape. Controlled by the autonomic nervous system.
- Smooth muscles are involuntary and have a bundle-like/tubular structure. Controlled by the autonomic nervous system, and can be found in internal organs like blood vessels, gastro-intestinal tract, and urinary bladder.
Muscle Parts
- Fibers are the fleshy parts of muscle responsible for contraction, they thicken upon contraction
- The origin is the fixed, proximal (closer to the body's midline) end of a muscle
- The insertion is the movable, distal (farther from the body's midline) end of a muscle
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Description
Test your knowledge on the different types of muscles, including voluntary and involuntary muscles, and their parts such as fibers, origin, and insertion. This quiz covers essential concepts about skeletal, cardiac, and smooth muscles, along with how they function in the body.
