Lab 2 Unit 13

Indicate whether the vastus lateralis is located on the anterior (A) or posterior (P) surface of the thigh, and then indicate its action (either flexes or extends the leg).

A; extends the leg

Indicate whether the vastus medialis is located on the anterior (A) or posterior (P) surface of the thigh, and then indicate its action (either flexes or extends the leg).

A; extends the leg

Indicate whether the rectus femoris is located on the anterior (A) or posterior (P) surface of the thigh, and then indicate its action (either flexes or extends the leg).

A; extends the leg Submit

Indicate whether the biceps brachii is located on the anterior (A) or the posterior (P) surface of the body and then indicate the action of the muscle.

A; flexes and supinates the forearm

Indicate whether the flexor carpi radialis is located on the anterior (A) or the posterior (P) surface of the body and then indicate the action of the muscle.

A; flexes wrist and abducts hand

Which of the following is not true of the deep fascia of the leg?

An insertion for the majority of lower leg muscles

Which set of muscles is primarily used when doing bar chin-ups?

Biceps brachii msucle

Which muscle is a lateral hamstring?

Biceps femoris

Which muscle is located deep to the biceps brachii?

Brachialis

The vastus intermedius _____ the leg at the knee

Extends

Gluteus Maximus Function

Extends, abducts, and laterally rotates the thigh

Which muscle is located primarily in the posterior antebrachial region?

Extensor carpi ulnaris

Which muscle functions in extensions of the digits of the hand?

Extensor digitorum

Which muscle extends the toes?

Extensor digitorum longus

Both the Psoas major muscle and iliacus muscle extend the thigh (T or F)

False

Eversion of the foot is a function of the ___

Fibularis longus

What superficial flexor muscle of the forearm is the most lateral?

Flexor carpi radialis

Which muscle is a superficial anterior flexor muscle?

Flexor digitorum superficialis

Which muscle of the wrist and fingers is a deep anterior flexor?

Flexor pollicis longus

In order for a ballerina to dance on point (on her toes), which set of muscles would she use?

Gastocnemius and soleus

In which muscle are intramuscular injections into the hip given?

Gluteus medius

Which muscle flexes the thigh toward the trunk?

Iliopsoas

The iliacus and the psoas major muscles are collectively known as the ____________ muscle because they share a common insertion on the __________ of the femur.

Illopsoas; lesser trochanter

Which muscle is considered one of the four rotator cuff muscles?

Infraspinatus

Which statement is true of the triceps brachii but false of the biceps brachii?

It extends the forearm

The posterior axial muscle that crosses the glenohumeral joint is the _____

Latissimus dorsi

Indicate whether the extensor digitorum is located on the anterior (A) or the posterior (P) surface of the body and then indicate the action of the muscle.

P; extends fingers and wrist

Indicate whether the triceps brachii is located on the anterior (A) or the posterior (P) surface of the body and then indicate the action of the muscle.

P; extends the elbow Submit

Indicate whether the extensor carpi ulnaris is located on the anterior (A) or the posterior (P) surface of the body and then indicate the action of the muscle.

P; extends wrist and adducts hand

Indicate whether the biceps femoris is located on the anterior (A) or posterior (P) surface of the thigh, and then indicate its action (either flexes or extends the leg).

P; flexes the leg

Indicate whether the semitendinosus is located on the anterior (A) or posterior (P) surface of the thigh, and then indicate its action (either flexes or extends the leg).

P; flexes the leg Submit

Function of Gastrocnemius

Plantar flexion of the foor

What is function of gastrocnemius

Plantar flexion of the foot

The most powerful movement at the ankle joint is _____, and the ____ is one of the prime movers of this movement

Plantar flexion; gastronemius

To allow for flexion, the ____ unlocks the knee joint

Popillteus

The two heads of the biceps brachii muscle come together distally to insert on the ____

Radial tuberosity

Which muscle is a hip flexor?

Rectus femoris

Which muscle is located on the posterior thigh?

Semitendinosus

Which muscle is deep to the dagstocnemius?

Soleus

Which deep posterior extensor of the wrist originates on the radius and ulna and interosseous membrane?

The abductor pollicis longus

Which of the following statements about muscles of the forearm is true?

The pronator teres originates on the medial epicondyle and inserts on the ulna

Why are the muscles that move the fingers and wrist located in the forearm?

This design allows the hand to maintain fine motor control and strength without the interference of bulky muscles.

Distinguish between the triceps brachii and the biceps brachii in terms of location and function.

Triceps brachii is only muscle on posterior side of the arm, and it extends the forearm. The biceps brachii is found on the anterior side of the arm and flexes and supinates the forearm.

The Sartorius muscle flexes and laterally. rotates the leg at the knee

True

The action of both vastus medialis and the vastus lateralis is to extend the leg at the knee (T or F)

True

The anterior axial muscle that crosses the glenohumeral joint is the pectoralis major muscle (T or F)

True

Movement of the shoulder laterally away from the body is called ___

abduction

The tensor fascia latae is involved in hip ___

abduction

The gluteus medius muscle ____

abducts and medially rotates thigh

A reduction in the lateral angle of the glenohumeral joint in relation to the anatomical position would be called ____

adduction

The pectineus muscle ____ the thigh

adducts and flexes

The flexor carpi ulnaris

adducts the wrist

The smallest posterior extensors of the elbow joint is the ___

anconeus

Forearm supination is assisted by the ____

biceps brachii

The muscle tat generates the most power during elbow flexion is the ___

brachialis

The deep posterior extensor of the wrist and fingers ______

controls the thumb and index finger

The brachialis muscle is located ____ to the biceps brachii muscle

deep

The forearm can be divided into anterior flexors and posterior extensors, as well as _____

deep and superficial layers

The _____ is a prime mover of the glenohumeral joint during flexion

deltoid

The main action of the fibularis longus is to____

evert the foot

Thea action of the extensor digitorum longus muscle is to ____

extend digits

The semimembranosus ____ the thigh at the hip and ___ the leg at the knee

extends; flexes

The gluteus maximus is the most powerful muscle during ____

extension

The prime mover of wrist extension is the___

extensor digitorum

The extensor muscle that branches to form four tendons on the back of the hand is the ___

extensor digitroum

Both heads of the biceps femoris muscle ___

flex at the leg at the knee

The soleus muscle ______ the foot at the ankle

flexes

function of the iliopsoas

flexes the thing at the hip

Movement of the elbow joint movement is limited to ____

flexion and extension

The brachioradials is a strong forearm _____

flexor

Wrist abduction occurs through the actions of ____ muscles

four

The insertion of the extensor digitorum branches into ____

four tendons

The primer mover of hip extension is the ____

gluteus maximus

The origin of the flexor carpi radialis is on the ___

humerus

Carpal tunnel syndrome is characterized by ____

inflammation of the flexor retinaculum and/or tendon sheaths

The origin of the long head of the triceps brachii is one the ____

infraglenoid tubercle of the scapula

All fibers of the pectoralis major muscle coverage on the lateral edge of the___

intertubercular sulcus

The actions of the muscles that cross the hip do not include ____

inversion

The tibialis anterior muscle dorsiflexes the foot at the ankle and also assists in __________ of the foot.

inversion

The rectus femoris muscle extends the leg at the ____

knee

The tensor fasciae latae stabilizes the hip joint and the ____ joint

knee

An origin of the supinator is the ___

lateral epicondyle of the humerus

The insertion of the extensor carpi radialis longus muscle is on ___

metacarpal two

The palmaris longus inserts on the ______

palmar aponeurosis

The gastocnemius muscle ____

plantar flexes foot at ankle, assists in flexion of leg at knee, has 2 heads - medial and lateral

The semitendinosus muscles lies ____ to the semimembranosus muscle

posterior

The biceps femoris is located in the ___

posterior thigh

The muscles that extend the forearm are located ____

posteriorly

The ball and socket joint in the hip is similar to the ball and socket joint of the shoulder but is designed more for __________ than ___________.

power; precision

Movement of the forearm includes ____

pronation and supination

Of all the flexor muscles of the forearm, the ____ is the shortest

pronator teres

The two heads of the biceps brachii combine to insert on the _____

radial tuberosity

The interosseous membrane is located between the ___

radius and ulna

To allow movement of the tendons within the carpal tunnel zone, each tendon is encased in a _____

sheath

Muscles that act on the knee joint form most of the mass of the ___

thigh

The prime mover of dorsiflexion is the ___

tibialis anterior

The prime mover of elbow extension is the ____

triceps brachii

The actions of the extensor carpi radialis brevis are localizaed to the ____

wrist