Share
Explore BrainMass

Muscular System Questions

1) What is responsible for the banding pattern seen in skeletal muscle cells?

2)What is the functions of tendons? How is a tendon different from an aponeurosis? How is it similar?

3)How do isotonic and isometric contractions different ?

4) The sternocleidomastoid muscles help to flex the neck. What are their antagonists?

5)Name two muscles that reverse the movement of the deltoid muscle?

6) Name the prime mover of elbow flexion. Name its antagonist>

7) What is the effect of aging on skeletal muscles?

Solution Preview

1. What is responsible for the banding pattern seen in skeletal muscle cells?

The banding pattern seen in skeletal muscle cells is the result of the sarcomeres. Specifically, what you're seeing is the Z-lines at the ends of the sarcomeres. What is a sarcomere? It is the fundamental repeating unit of contraction in a skeletal muscle fiber. Using a light microscope, you can't see much more detail in the sarcomere than just the end points, the Z-lines.

-----------------------------------------------------------------

2. What is the functions of tendons? How is a tendon different from an aponeurosis? How is it similar?

Tendons connect muscles to bones. A tendon is made up of a cord of dense connective tissue that extends from the epimysium, perimysium, and endomysium of the muscle bundle, to the periosteum of a bone. It is different from an aponeurosis in that a normal tendon is shaped like a cord, while an aponeurosis is a broad, flat extension of the epimysium, perimysium, and endomysium. An aponeurosis is a special type of tendon. An example of a tendon is the Achilles tendon which connects the gastrocnemius muscle to the heel. An example of an aponeurosis is the galea aponeurotica on top of the skull which connects the frontalis muscle over ...

Solution Summary

Various muscular system questions are explained.

$2.19