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
