Muscle System Review Questions

Which of these actions is not performed by the trapezius? Extension of the neck Depression of the scapula Elevation of the scapula Rotation of the scapula Adduction of the humerus

Adduction of the humerus

Which of the following has the least in common with the other four? Vastus intermedius Vastus lateralis Vastus medialis Rectus femoris Biceps femoris

Biceps femoris

Which of the following muscles is the prime mover in spitting out a mouthful of liquid?

Buccinator

Which of these is not in the anterior compartment of the thigh? Semimembranosus Rectus femoris Vastus intermedius Vastus lateralis Sartorius

Semimembranosus

Which muscle(s) can contract without the need for nervous stimulation?

Smooth and cardiac muscle

Which of the following muscles produces plantar flexion of the foot?

Soleus

Which of these muscles is an extensor of the neck?

Splenius capitis

Which of these muscles does not contribute to the rotator cuff? Supraspinatus Infraspinatus Subscapularis Teres major Teres minor

Teres major

Identify, from the list below, an antagonist to the biceps brachii muscle. Brachialis Pectoralis minor Trapezius Triceps brachii

Triceps brachii

Pennate muscles are stronger than parallel muscles of comparable size. T/F

True

The abdominal oblique muscles rotate the vertebral column. T/F

True

The orbicularis oculi and orbicularis oris are sphincters. T/F

True

A muscle that aids in chewing without moving the mandible is the ______.

buccinator

The major superficial muscle of the shoulder, where injections are often given, is the _____.

deltoid

All plantar flexors in the posterior compartment of the calf insert on the heel by way of the calcaneal tendon. T/F

false

Sheets of fibrous connective tissue called _____ separate a muscle or muscle group from neighboring muscles.

fasciae

A muscle that holds a bone still during a particular action is called ______.

fixator

If a muscle has the word hallucis in its name, it must cause movement of the _____.

great toe

Three out of the four rotator cuff muscles insert on the _________ of the humerus.

greater tubercle

The training regimen of a competitive weight lifter is designed partly to __________________.

increase the average number of myofibrils per muscle fiber.

What structure separates the two halves of the rectus abdominis muscle?

linea alba

A fascicle is bounded and defined by the _______.

perimysium

The _____ produce(s) lateral grinding movements of the jaw.

pterygoids

The patella is embedded in the tendon of the _____ muscle.

quadriceps femoris

Both the gastrocnemius and _____ muscles insert on the heel by way of the calcaneal tendon.

soleus

Although warm-up stretching is not needed for full muscle function, it is required to prevent injury to ______ and ________.

tendons and ligaments

The triceps brachii muscle forms which class of lever system?

First class

Rapid flexion of the knee often causes hamstring injuries. T/F

False

Silent pronunciation of skeletal muscles is often a more effective learning strategy than saying it aloud to yourself or a partner. T/F

False

The psoas major is an antagonist of the rectus femoris. T/F

False

The tibialis posterior and tibialis anterior are synergists. T/F

False

Well-exercised muscles generally gain in thickness by the addition of new muscle fibers. T/F

False Muscle growth involves an increase in muscle fiber thickness not in their number

Where does gluteus maximus insert?

Gluteal tuberosity

What muscle inserts on the lesser trochanter of the femur?

Iliopsoas

What is a connective tissue band on the lateral thigh that helps stabilize the knee?

Iliotibial band

What are helpful strategies for learning skeletal muscles of the body.

Look at visuals. Palpate the muscles on your own body. Locate origins and insertions on an articulated skeleton. Study the derivation of muscle names.

Which of the following muscles could you most easily do without?

Palmaris longus

Which muscle from the list is most important for push-ups?

Pectoralis major

What muscle does NOT flex the wrist?

Pronator teres

Which head of the quadriceps femoris extends the knee and flexes the thigh?

Rectus femoris

Which of the following muscles does NOT extend the hip joint? Rectus femoris Gluteus maximus Biceps femoris Semitendinosus Semimembranosus

Rectus femoris