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Skeletal Muscle: Types and Functions

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Questions and Answers

What is the basic building block of a skeletal muscle structure?

Fascicle

Epimysium

Muscle fiber

Muscle cell (correct)

What is the function of myoglobin in skeletal muscles?

To facilitate muscle contraction

To bind to oxygen for local use during high muscle activity (correct)

To regulate muscle relaxation

To provide support to the skeleton

What type of muscles are responsible for actions such as swallowing, urination, and defecation?

Skeletal muscles (correct)

Voluntary muscles

Cardiac muscles

Smooth muscles

What is the role of postural skeletal muscles in the body?

To provide support to the skeleton and organs Signup and view all the answers

What is the characteristic that enables skeletal muscles to resist the forces of gravity?

Support Signup and view all the answers

What is the primary function of shivering in extremely cold conditions?

To maintain a constant body temperature Signup and view all the answers

What is unique about the structure of skeletal muscle cells?

They are long, cylindrical, and multi-nucleated Signup and view all the answers

What is the primary energy source for nerve cells?

Glucose Signup and view all the answers

What is the characteristic appearance of skeletal muscle fibers under a microscope?

Striated with red and white lines Signup and view all the answers

What is the term for the breakdown of muscle tissue, leading to muscle weakness?

Muscular dystrophy Signup and view all the answers

Where are skeletal muscles typically found in the body?

Attached to bones Signup and view all the answers

What type of movements do skeletal muscles facilitate?

Voluntary movements of the skeleton Signup and view all the answers

What is the approximate number of skeletal muscles found in the human body?

600-900 Signup and view all the answers

What type of tissue connects skeletal muscles to bones?

Tendons Signup and view all the answers

What is an example of a skeletal muscle?

Biceps brachii Signup and view all the answers