Muscular System Test Review

What do you call the “shrinkage” of a muscle due to lack of use?

• hypertrophy

• atrophy

• fatigue

• threshold

Muscle fibers are arranged in bundles called:

• sarcomeres

• motor units

• fascicles

• vesicles

The intersection between the motor neuron and the muscle fiber is called the:

• sarcoplasmic reticulum

• transverse tubule

• Z line

• neuromuscular junction

The bacteria that causes tetanus interfere with the action of cholinesterase, this results in:

• locked muscles

• muscle weakness

• fatigue

• hearing loss

What cellular organelle provides the ATP needed for muscle activity?

• mitochondria

• nucleus

• vacuole

• endoplasmic reticulum

Tags

NGSS.HS-LS1-7

Muscle fatigue and soreness is due mainly to an accumulation of:

• ATP

• lactic acid

• creatine phosphate

• cholinesterase

Tags

NGSS.HS-LS2-3

DMD is a 'progressive' disease, which means that:

• it affects only boys

• women can be carriers

• it only affects children

• it will get worse over time

Identify the structure labeled 'B' in the diagram.

• Nucleus

• T Tubule

• Sarcolemma

• Myofibril

Identify the structure labeled 'E' in the diagram.

• Nucleus

• T Tubule

• Sarcolemma

• Myofibril

Fill in the blank: The connective tissue that surrounds a bundle of muscle fibers is called ________.

• Endomysium

• Perimysium

• Epimysium

• Sarcolemma

Tags

NGSS.HS-LS1-2