The Muscular System Intro

What are the three types of muscle mentioned in the document?

• Skeletal, Smooth, Cardiac

• Skeletal, Cardiac, Nervous

• Smooth, Cardiac, Connective

• Cardiac, Nervous, Epithelial

Which muscle is identified as the smallest in the document?

• Sartorius

• Gluteus maximus

• Stapedius

• Biceps

What is the function of the epimysium in skeletal muscles?

• Separates the muscle into fascicles

• Surrounds the entire muscle

• Separates fascicles into muscle fibers

• Attaches muscle to bone

Which characteristic is NOT true about skeletal muscle fibers?

• They are voluntary

• They are multinucleate

• They are involuntary

• They are striated

What is the function of tendons?

• To separate muscle fibers

• To attach muscle to bone

• To surround the entire muscle

• To contract the muscle

What are myofibrils fundamental to?

• Muscle contraction

• Blood circulation

• Nerve signaling

• Bone growth

Which protein are thick filaments composed of?

• Myosin

• Actin

• Collagen

• Elastin

What is the light band in striations composed of the protein actin an are called the ________?

• Thin filaments

• Thick filaments

• Collagen fibers

• Elastic fibers

Which type of muscle is self-exciting and rhythmic?

• Cardiac muscle

• Smooth muscle

• Skeletal muscle

• Voluntary muscle

What is a characteristic of smooth muscle cells?

• Lack striations

• Have multiple nuclei

• Are voluntary

• Are highly organized