Muscular System

Front

What are the smaller fibers contained within muscle fibers called?

Back

myofilaments

Front

Which cellular organelle is responsible for providing ATP needed for muscle contraction?

Back

mitochondria

Front

What type of muscle is primarily voluntary?

Back

skeletal muscle

Front

What bacterial infection causes muscle spasms and stiffness, commonly known as 'lockjaw'?

Back

tetanus

Front

What chemical is elevated in diagnostic tests for Duchenne Muscular Dystrophy (DMD), indicating muscle damage?

Back

creatine kinase

Front

What is the primary function of myofilaments in muscle contraction?

Back

They interact to produce muscle contraction through the sliding filament theory.

Front

What are the two main types of muscle tissue in the human body?

Back

Skeletal muscle and smooth muscle.

Front

What is the role of mitochondria in muscle cells?

Back

They produce ATP through aerobic respiration, which is essential for muscle contraction.

Front

What distinguishes skeletal muscle from cardiac and smooth muscle?

Back

Skeletal muscle is under voluntary control, while cardiac and smooth muscle are involuntary.

Front

What is the significance of creatine kinase in muscle health?

Back

Elevated levels indicate muscle damage or disease.