Chapter 11

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Check all that are true statements regarding antagonists.

-The stretching of the antagonist slows and controls the action of the agonist. -The action of the antagonist opposes the action of the agonist.

Check all of the muscles of the thigh that flex the leg.

Bicep femoris semimembranosus semitendinosus gracilis

Check all of the following muscles that function to abduct the hand at the wrist.

Extensor carpi radialis brevis Extensor carpi radialis longus Flexor carpi radialis

Which structure is highlighted?

Infraspinatus

Based on the name of the muscle pronator teres, what can you tell about it? Check all that apply.

It's shape and it's action.

Which muscle is the most powerful muscle of mastication and functions to elevate and protract the mandible?

Masseter

Classify the muscles of the thigh into their appropriate compartments.

Medial Compartment -Adductor longus -Gacilis -Adductor magnus Posterior Compartment -Semitendinosus -Semimembranosus Anterior Compartment -Vastus Lateralis -Rectus femoris -Sartorius

Drag and drop the muscle names into the appropriate categories based on where in the body it is located.

Mouth region:- Orbicularis oris Wrist:- Flexor carpi ulnaris Great toe:- Extensor hallucis longus Toward back of body:- Latissimus dorsi Deep to Another structure:- Flexor digitorum profundus

Which of the following characteristics was used in the naming of the extensor carpi radialis longus muscle? Check all that apply.

Muscle action Muscle shape Specific body location

Which of the following characteristics was used in the naming of the gluteus maximus muscle? Check all that apply.

Muscle size Specific body location

The muscle whose name indicates that it extends at an angle to the longitudinal axis of the body is the

external oblique

During normal, relaxed exhalation, the internal intercostals contract to assist with this process.

false

Check all that are functions of the muscles of the abdominal wall.

flexion of abdominal wall compression of abdominal wall

The abdominal muscle that extends vertically the entire length of the anteromedial abdominal wall and forms the traditional "six pack" is the

rectus abdominus

For axial muscles, the more moveable attachment is usually the

superior attachment

The diaphragm is the most important muscle associated with respiration.

true

The quadriceps femoris is the prime mover of knee extension.

true


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