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Musculoskeletal System and Types of Muscles

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Musculoskeletal System and Types of Muscles

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Questions and Answers

What is the function of troponin T?

Inhibits F-actin-myosin interaction

Binds to tropomyosin (correct)

Activates smooth muscle cells

Promotes bone formation

Which type of muscle contains troponin?

Smooth muscle

Cardiac muscle

Skeletal muscle (correct)

None of the above

What is the function of troponin I?

Activates smooth muscle cells

Inhibits F-actin-myosin interaction (correct)

Binds to tropomyosin

Promotes bone formation

From where is the calcium derived for smooth muscle contraction?

Outside the cell Signup and view all the answers

What is the role of troponin C in muscle contraction?

Binds calcium for regulation Signup and view all the answers

What do osteoblasts secrete during bone formation?

Collagen components of non-mineralized bone Signup and view all the answers

Where are involuntary muscles mainly found?

In the internal organs Signup and view all the answers

Which type of muscle is sometimes called skeletal muscle?

Voluntary muscle Signup and view all the answers

What is the main function of the Musculoskeletal System?

Movement, stability, shape, and support Signup and view all the answers

What is responsible for force generation in muscle contraction?

Myosin thick filament Signup and view all the answers

What is the distribution of different types of muscle tissue in the body?

Skeletal muscle - 40%, Smooth and cardiac muscle -10% Signup and view all the answers

What substance in muscle increases with age and use?

Myoglobin Signup and view all the answers

What makes up a muscle fiber?

A group of fibrils Signup and view all the answers

Where is cardiac muscle found?

In the heart Signup and view all the answers

What is contained in an elastic sheath of its own called the sarcolemma?

Muscle fiber Signup and view all the answers