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Human Anatomy: Bones, Muscles, and Tissues

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Human Anatomy: Bones, Muscles, and Tissues

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Questions and Answers

What is the function of smooth muscles in the respiratory system?

Peristalsis

Composes the heart

Maintain pressure in arteries

Change thoracic volume (correct)

Which body system is responsible for maintaining pressure in arteries?

Muscular system (correct)

Digestive system

Nervous system

Skeletal system

What is the function of skeletal muscles?

Composes the heart

Perform peristalsis

Change thoracic volume

Body movement (correct)

Where can cardiac muscles primarily be found in the body?

In the heart (B) Signup and view all the answers

What is the function of tendons in the body?

Connect muscle to bone (D) Signup and view all the answers

What is the role of calcium in muscle contraction?

Opens attachment sites of actin for myosin binding (A) Signup and view all the answers

Which component defines the boundary between sarcomeres?

Z bands (B) Signup and view all the answers

What causes muscle fatigue?

Buildup of lactic acid lowering cell pH (A) Signup and view all the answers

How do steroids impact muscle cells?

Increase protein filament synthesis for muscle strength (B) Signup and view all the answers

What is the alternative energy source for muscle contraction other than ATP?

Creatine phosphate (B) Signup and view all the answers

What characterizes muscular dystrophy?

Hereditary progressive wasting of muscles (D) Signup and view all the answers