Question

Contracts Slowly Striated Voluntary

Student 1 Smooth Cardiac, Skeletal Skeletal
Student 2 Cardiac, Smooth Skeletal Skeletal, Smooth
Student 3 Skeletal Skeletal Cardiac
Student 4 Smooth Cardiac, Skeletal Skeletal, Smooth

The three types of muscle differ in whether they contract slowly, are striated, and are under voluntary or involuntary control. Students in a class listed this information in the table shown here. Which student listed the information correctly?


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Answer 1

Student 1

Step-by-step explanation:

The only type of muscle that is under voluntary control is skeletal. If you look under the column marked voluntary, you can see that student 1 is the only student who listed this fact correctly. The other options student 1 listed are also correct, but you, but you can answer the question correctly even if you don’t know this.

Answer 2

Student 1 Smooth Cardiac Skeletal Skeletal

Step-by-step explanation:

Skeletal muscles are voluntary muscles which contract fast through the strong forces in between its fibers to facilitate the movements of hands, legs, and other bones in the body. The cross striations are due to actin and myosin arranged along the axis of the cell.

Cardiac muscles are involuntary muscles in the heart walls. The contractions are slow with the force being spread along its branched structure so as to facilitate controlled pumping of blood from the heart. Cardiac muscles are partially striated and are branched since actin and myosin are arranged on the cell axis.

Smooth muscles are are involuntary muscles found lining the blood vessels, viscera, skin etc. They aid in visceral content movements, changes the tone of blood vessels, airways according to their diameter. There are no striations because actin and myosin are arranged randomly. Their contractions are very slow due to weak forces.