CH 7 (MUSCLES) PRACTICE QUIZ

What is the main function of the epimysium in a muscle?

• To produce ATP energy

• To protect the muscle from damage

• To store Calcium ions

• To anchor the muscle filaments

What is the role of satellite stem cells in muscle cell formation?

• To store glucose for energy

• To mature into new muscle cells when needed

• To fuse with other muscle cells

• To release cytokine proteins

What is the function of the sarcoplasmic reticulum in a muscle cell?

• To release neurotransmitters

• To anchor the muscle filaments

• To produce ATP energy

• To store Calcium ions

What is the main protein in the thick filament of a muscle cell?

• Myosin

• Actin

• Troponin

• Tropomyosin

What is the basic unit of contraction in skeletal muscle?

• Myofilament

• Sarcomere

• Endomysium

• Myofibril

What is the function of titin in a sarcomere?

• To anchor the proteins and prevent overstretching

• To store Calcium ions

• To produce ATP energy

• To release neurotransmitters

What is the term for the strongest and smoothest contraction a muscle fiber can make?

• Summation

• Tetanus

• Asynchronous Activation

• Recruitment

What is the enzyme used to break down acetylcholine after it has been used in muscle contraction?

• Myosin

• Tropomyosin

• Troponin

• Acetylcholinesterase

What can cause muscle dystrophy?

• High levels of electrolytes

• Genetic mutation leading to lack of dystrophin

• Low blood sugar

• Excessive oxygen levels

What is the main reason for muscle fatigue due to low oxygen levels?

• Production of Lactic Acid

• Release of neurotransmitters

• Decreased ATP energy

• Increased glucose levels