Exam 11: Muscles of the Body

A horizontal line on the back used for locating the fourth lumbar vertebra.

The muscle which raises the corners of the mouth into a smile is the ________.

What muscles are important in mastication (excluding the muscles of the tongue)?

Interestingly, some synergists may act by cancelling out some of the actions of a prime mover.

Compare and contrast the function of the muscles contained in the anterior and posterior compartments of the upper and lower limbs. Explain the embryological reason for the differences.

A lever system operating at a mechanical advantage can move a large load a short distance with a small amount of effort.

The muscles in the anterior compartment of the arm are innervated by the ________ nerve.

Use the diagram above to answer the following questions. -Identify the letter that indicates the deltoid.

Intramuscular injections in adults are often given in this region to avoid the sciatic nerve.

This arrangement of fascicles tends to provide the greatest range of motion (shortening distance), though not the greatest power.

The extensor muscles of the upper limb lie almost exclusively in the ________ region of that limb.

Shin splints result from damage to which muscle or muscle group?

A prime mover for extension of the forearm at the elbow is the

Use the diagram above to answer the following questions. -Identify the letter that indicates the pectoralis minor.

Visceral muscle differs in its embryonic origin from skeletal muscle because it is derived from

The ________ is the longest muscle in the body, spanning two joints.

Briefly describe the landmarks used in making a gluteal intramuscular injection.

The elbow joint serves as a(n) ________ as the biceps brachii muscle flexes the forearm.

The muscle fascicle arrangement of the orbicularis oris is best characterized as

A prime mover for lateral rotation at the shoulder is the