masalah 1pilihanWhat is the primary function of the muscular system? Protect organsTransport blood Enable movement Produce hormones
masalah 3pilihanWhat type of muscle is found in the walls of internal organs such as the stomach and intestines?Skeletal muscleCardiac muscleSmooth muscle Voluntary muscle
masalah 4pilihanWhich muscle is responsible for breathing by contracting and relaxing the thoracic cavity? Pectoralis majorDiaphragmDeltoidSternocleidomastoid
masalah 5pilihanWhat is the name of the protein responsible for muscle contraction?CollagenKeratin Actin and MyosinElastin
masalah 6pilihanWhich muscle is located at the front of the upper arm and is responsible for flexing the elbow?Triceps brachii Biceps brachii DeltoidLatissimus dorsi
masalah 7pilihanWhat type of muscle action occurs when a muscle shortens while generating force?IsometricEccentricConcentricStatic
masalah 8pilihanWhich muscle is unique for being involuntary and striated?Skeletal muscleSmooth muscleCardiac muscleVoluntary muscle
masalah 9pilihanWhich group of muscles helps in extending the leg at the knee joint?HamstringsQuadricepsGlutealsCalf muscles
masalah 10pilihanWhat happens to muscles when they are not used for a long period?They grow strongerThey become elasticThey undergo atrophyThey convert to bone
masalah 12pilihanWhat happens during muscle contraction at the cellular level?ATP is released and calcium is stored Myosin pulls actin filaments closer together Proteins break downMitochondria stop functioning