Skeletal Muscle

The structural, repeating subunits, with patterns of light and dark bands, within skeletal muscle are:

• tendons

• sarcomeres

• sarcolemmae

• T-tubules

The organelle in muscle fibers that stores and releases the calcium required for contraction is:

• sarcoplasmic reticulum

• mitochondria

• Golgi apparatus

• nucleus

The major functions of the muscular system include all of the following except:

• water balance

• protection and support

• maintenance of posture

• movement

A macroscopically visible bundle of muscle fibers, surrounded by perimysium, is called a:

• epimysium

• fascicle

• sarcomere

• aponeurosis

In a convergent muscle, the fibers are:

• concentrically arranged

• parallel to the long axis of the muscle

• widespread over a broad area and joined at a common attachment site

• oblique to the tendon of the muscle

The bundle of dense regular connective tissue that attaches a skeletal muscle to bone is called a(n):

• ligament

• fascicle

• tendon

• endomysium

The muscle that assists the agonist is called the:

• prime mover

• synergist

• antagonist

• none of these is correct

A muscle attachment that is a thin, flat sheet is:

• sarcomere

• tendon sheath

• aponeurosis

• perimysium

The connective tissue that surrounds a fascicle is:

• deep fascia

• endomysium

• epimysium

• perimysium

A muscle that surrounds an opening is:

• pennate muscle

• convergent muscle

• fusiform muscle

• circular muscle (sphincter)