Chapter 9 Practice Questions

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The quadriceps femoris group DOES NOT include

Biceps femoris

Muscles that move the thumb will be named

Pollicis

Which muscle is named for its shape?

Pronator quadratus

The superior aspect of the pubic bones is the origin of:

Rectus abdominis

NOT adduct thigh?

Rectus femoris

Which does NOT adduct the thigh?

Rectus femoris

Standing on tiptoes is an example of a:

Second class lever system

Medial to lateral muscles of hamstring group

Semimembranous, semitentinosus, biceps femoris

NOT a muscle involved in movement of tongue to manipulate food when chewing and pushing bolus of food into throat?

Stylohyoid

Damage to the stylohyoid, mylohyoid, and geniohyoid impairs:

Swallowing

Which type of muscle work together with the agonist?

Synergist

Which works with agonist?

Synergist

NOT a muscle of the rotator cuff:

Teres major

From superficial to deep, the three muscles of the lateral abdominal wall are:

external oblique, internal oblique, transversus abdominis

Muscular walls of the thorax and abdomen are composed of

oblique and rectus muscles

John experienced a cut that severs the tendon that attaches the insertion of the gastrocnemius muscle. As a result of this injury, what action is difficult for him to perform?

plantar flexion

Which muscle forms anterior surface of neck?

platysma

which extends the forearm:

triceps brachii

All extend thigh and flex leg EXCEPT

vastus lateralis

The ability to produce muscle tension allow skeletal muscle to produce body movement known as an:

Action

Damage to the pectoralis major would interfere with a person's ability to

Adduct arm at shoulder

The levator ani muscle group inserts on the

Coccyx

A first class lever has the fulcrum situated farther from the point of the applied force, with the load to be moved in between.

False

A first-class lever has the fulcrum situated farther from the point of applied force, with load to be moved in between

False

Prime mover of elbow flexion is biceps brachii

False

When climbing stairs, the gluteus maximus and hamstring group muscles work as antagonists.

False

What best describes Fusiform skeletal muscle structure

Fusiform muscles tend to be thicker in their belly and taper at their ends.

Abducts the thigh, medically rotated thigh and pelvis of moving limb during walking

Gluteus minimus

Synergist to adductor group

Gracilis

What is the fulcrum of a lever system?

Joint at which movement occurs

Which muscle is a powerful agonist of addiction, medial rotation, and extension of the arm?

Latissimus dorsi

Works as antagonist to orbicularis oculi

Levator palpebrae superioris

Bone that is NOT attached to sternocleidomastoid muscle?

Mandible

A lever system works at a mechanical advantage when:

The fulcrum is located farther from the applied force

In the human body what is the fulcrum in a lever system?

The fulcrum is the joint at which movement occurs.

Which extends the forearm:

Triceps brachii

An angonist is a muscle that provides most of the force required for a given movement

True

The soleus is a synergist of the gastrocnemius during plantar flexion.

True

The union of the muscles of the quadriceps femoris group forms the quadriceps tendon, which continues to form the patellar ligament

True

The deltoid is responsible for __________.

abducting the arm

Triceps brachii and biceps brachii perform opposing actions and are classified as:

antagonists

The masseter and temporalis muscles provide much force for:

chewing

Muscles with a triangular shape, such as the pectoralis major muscle in the chest, typically have a __________.

convergent fascicle arrangement

What joint serves as the fulcrum when triceps brachii moves the forearm?

elbow joint

Damage to the trapezius would cause a person to have difficulty:

extending the head

What type of muscle performs an anchoring function by holding a bone in place?

fixator

Flexes and abducts hand?

flexor carpi radialis

Where does the infraspinatus insert?

greater tubercle of humerus

iliiopsoas in formed by the union of two muscles known as

iliacus and psoas major

Where does the mentalis muscle insert?

skin of chin

What is the proper position of the erector spinae muscles situated from medially to laterally relative to the axis of the vertebral column?

spinalis, longissimus, iliocostalis


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