Adductor Brevis

Adductor Brevis

Adductor Brevis

• Adducts the leg at the hip.

Adductor Hiatus

Adductor Hiatus

Adductor Hiatus

• Adducts the leg at the hip.

Den lange indadfører

Adductor Longus

Adductor Longus

• Flexes the leg at the hip.

  This means that the adductor longus muscle bends the hip joint such that there is a decrease in the angle between the upper leg and the torso.

• Adducts the leg at the hip.

  This means that the adductor longus muscle moves the upper leg toward the vertical midline of the body (i.e. the action of closing your legs together from a spread out position).

• Provides some lateral rotation of the upper leg.

  This means that the adductor longus muscle rotates the upper leg outward around the axis of the bone (i.e. it rotates the upper leg away from the vertical midline of the body).

Den store indadfører

Adductor Magnus

Adductor Magnus

• Adducts the leg at the hip.

  This means that the adductor magnus muscle moves the upper leg toward the vertical midline of the body (i.e. the action of closing your legs together from a spread out position).

• Laterally rotates the upper leg.

  This means that the adductor magnus muscle rotates the upper leg outward around the axis of the bone (i.e. it rotates the upper leg away from the vertical midline of the body).

• Medially rotates the upper leg (possibly).

  This means that the adductor magnus muscle can possibly rotate the upper leg inward around the axis of the bone (i.e. rotate the upper leg toward the vertical midline of the body).

• Ekstension i hofteleddet

Aconeus

Aconeus

Aconeus

• Extends the arm at the elbow.

  This means that the anconeus muscle straightens the elbow joint such that there is an increase in the angle between the forearm and the upper arm.

Tohovedede armbøjer

Biceps Brachii

Biceps Brachii

• Flexes the arm at the elbow.

  This means that the biceps brachii muscle bends the arm at the elbow joint such that there is a decrease in the angle between the forearm and the upper arm.

• Supinates the forearm.

  This is means that the biceps brachii muscle rotates the forearm outward (i.e. if your arms are hanging by your sides it is the action of turning your palms forward, or if you forearms are held horizontally it is the action of turning your palms upward).

• Bøjning i skulderleddet

Den tohovedede knæbøjer

Biceps Femoris

“hamstrings” - the biceps femoris muscle forms part of the hamstrings muscle group, along with semimembranosus and semitendinosus.

• Flexes the leg at the knee.

  This means that the biceps femoris muscle bends the leg at the knee joint such that there is a decrease in the angle between the lower leg and the upper leg.

• Extends the leg at the hip.

  This means that the biceps femoris muscle straightens the hip joint such that there is an increase in the angle between the upper leg and the torso.

Brachoradialis

Brachioradialis

Brachioradialis

• Flexes the arm at the elbow.

  This means that the brachioradialis muscle bends the arm at the elbow joint such that there is a decrease in the angle between the forearm and the upper arm.

Skuldermuskel

Deltoideus

Deltoideus

• The anterior (or front) fibers of the deltoid muscle flex the arm at the shoulder.

  This means that the anterior fibers of the deltoid muscle move the upper arm upward to the front.

• The anterior (or front) fibers of the deltoid muscle medially rotate the upper arm.

  This means that the anterior fibers of the deltoid muscle rotate the upper arm inward around the axis of the bone (i.e. rotate the upper arm toward the vertical midline of the body).

• The lateral (or side) fibers of the deltoid muscle abduct the arm at the shoulder.

  This means that the lateral fibers of the deltoid muscle move the upper arm upward to the side.

• The posterior (or rear) fibers of the deltoid muscle extend the arm at the shoulder.

  This means that the posterior fibers of the deltoid muscle move the upper arm downward to the rear.

• The posterior (or rear) fibers of the deltoid muscle laterally rotate the upper arm.

  This means that the posterior fibers of the deltoid muscle rotate the upper arm outward around the axis of the bone (i.e. rotate the upper arm away from the vertical midline of the body).

Rygstrækkere

Erector Spinae

Erector Spinae

• Stræk af rygsøjlen

Extensor Carpi Radialis Longus

Extensor Carpi Ulnaris

Extensor Carpi Ulnaris

• Extends the wrist.

  This means that the extensor carpi radialis longus muscle straightens the wrist joint such that the angle between the back of the hand and the back of the forearm decreases (i.e. it moves the back of the hand toward the back of the forearm).

• Abducts the hand.

  This means that the extensor carpi radialis longus muscle bends the wrist sideways such that the thumb side of the hand moves toward the forearm.

Extensor Carpi Ulnaris

Extensor Carpi Ulnaris

Extensor Carpi Ulnaris

• Extends the wrist.

  This means that the extensor carpi ulnaris muscle straightens the wrist joint such that the angle between the back of the hand and the back of the forearm decreases (i.e. it moves the back of the hand toward the back of the forearm).

• Adducts the hand.

  This means that the extensor carpi ulnaris muscle bends the wrist sideways such that the little finger side of the hand moves toward the forearm.

Extensor Digitori Minimi

Extensor Digitori Minimi

Extensor Digitori Minimi

• Extends the wrist.

  This means that the extensor digiti minimi muscle straightens the wrist joint such that the angle between the back of the hand and the back of the forearm decreases (i.e. it moves the back of the hand toward the back of the forearm).

• Extends digiti minimi (i.e. the little finger).

  This means that the extensor digiti minimi muscle straightens the little finger.

Extensor Digitorum

Extensor Digitorum

Extensor Digitorum

• Extends the wrist.

  This means that the extensor digitorum muscle straightens the wrist joint such that the angle between the back of the hand and the back of the forearm decreases (i.e. it moves the back of the hand toward the back of the forearm).

• Extends the fingers.

  This means that the extensor digitorum muscle straightens the fingers.

Ydre skrå mavemuskel

External Oblique

External Oblique

• Laterally flexes the spine.

  This means that the external oblique muscle bends the spine to the side (i.e. it moves the ribcage downward to the side towards the pelvis).

• Rotates the spine.

  This means that the external oblique muscle turns the spine to the side (i.e. it twists the torso).

• Compresses the abdominal cavity.

  This means that the external oblique muscle constricts the organs of the abdominal cavity and can increase intra-abdominal pressure (i.e. such as during a valsalva maneuver).

Flexor Carpi Radialis

Flexor Carpi Radialis

Flexor Carpi Radialis

• Flexes the wrist.

  This means that the flexor carpi radialis muscle bends the wrist joint such that the angle between the palm of the hand and the front of the forearm decreases (i.e. it moves the palm of the hand toward the front of the forearm).

• Abducts the hand.

  This means that the flexor carpi radialis muscle bends the wrist sideways such that the thumb side of the hand moves toward the forearm.

Flexor Carpi Ulnaris

Flexor Carpi Ulnaris

Flexor Carpi Ulnaris

• Flexes the wrist.

  This means that the flexor carpi ulnaris muscle bends the wrist joint such that the angle between the palm of the hand and the front of the forearm decreases (i.e. it moves the palm of the hand toward the front of the forearm).

• Adducts the hand.

  This means that the flexor carpi ulnaris muscle bends the wrist sideways such that the little finger side of the hand moves toward the forearm.

Den tohovedede lægmuskel

Gastrocnemius

Gastrocnemius

• Plantarfleksion i ankelleddet

• Flexes the leg at the knee.

  This means that the gastrocnemius muscle bends the leg at the knee joint such that there is a decrease in the angle between the lower leg and the upper leg.

• Plantar flexes the foot.

  This means that the gastrocnemius muscle extends the ankle such that the angle between the top of the foot and the shin increases.

Den store sædemuskel

Gluteus Maximus

Gluteus Maximus

• Extends the leg at the hip.

  This means that the gluteus maximus muscle straightens the hip joint such that there is an increase in the angle between the upper leg and the torso.

• Laterally rotates the upper leg.

  This means that the gluteus maximus muscle rotates the upper leg outward around the axis of the bone (i.e. it rotates the upper leg away from the vertical midline of the body).

Den mellemste sædemuskel

Gluteus Medius

Gluteus Medius

• Abducts the leg at the hip.

  This means that the gluteus medius muscle moves the upper leg outward to the side away from the vertical midline of the body (i.e. the action of spreading your legs to the side).

• The anterior (or front) fibers of the gluteus medius muscle medially rotate the upper leg.

  This means that the anterior fibers of the gluteus medius muscle rotate the upper leg inward around the axis of the bone (i.e. rotate the upper leg toward the vertical midline of the body).

• The anterior (or front) fibers of the gluteus medius muscle flex the leg at the hip.

  This means that the anterior fibers of the gluteus medius muscle bend the hip joint such that there is a decrease in the angle between the upper leg and the torso.

• The posterior (or rear) fibers of the gluteus medius muscle laterally rotate the upper leg.

  This means that the posterior fibers of the gluteus medius muscle rotate the upper leg outward around the axis of the bone (i.e. rotate the upper leg away from the vertical midline of the body).

• The posterior (or rear) fibers of the gluteus medius muscle extend the leg at the hip.

  This means that the posterior fibers of the gluteus medius muscle straighten the hip joint such that there is an increase in the angle between the upper leg and the torso.

• Stabilizes the hip joint during walking.

  This means that the gluteus medius muscle keeps the pelvis level when the leg on the opposite side of the body lifts off the ground during walking.

Den lille sædemuskel

Gluteus Minimus

Gluteus Minimus

• Stabilitet i hoften

• Indadrotation i hoften

• Udadrotation i hoften

Den slanke indadfører

Gracilis

Gracilis

• Flexes the leg at the knee.

  This means that the gracilis muscle bends the leg at the knee joint such that there is a decrease in the angle between the lower leg and the upper leg.

Hoftebøjeren

Iliopsoas

Iliopsoas

• Bøjning i hofteleddet

Infraspinatus

Infraspinatus

Infraspinatus

• Laterally rotates the upper arm.

  This means that the infraspinatus muscle rotates the upper arm outward around the axis of the bone (i.e. it rotates the upper arm away from the vertical midline of the body).

Indre skrå mavemuskel

Internal Oblique

Internal Oblique

• Laterally flexes the spine.

  This means that the internal oblique muscle bends the spine to the side (i.e. it moves the ribcage downward to the side towards the pelvis).

• Rotates the spine.

  This means that the internal oblique muscle turns the spine to the side (i.e. it twists the torso).

• Compresses the abdominal cavity.

  This means that the internal oblique muscle constricts the organs of the abdominal cavity and can increase intra-abdominal pressure (i.e. such as during a valsalva maneuver).

Bred rygmuskel

Latissimus Dorsi

Latissimus Dorsi

• Adducts the arm at the shoulder.

  This means that the latissimus dorsi muscle moves the upper arm toward the vertical midline of the body (i.e. the action of pulling your arms in to your sides).

• Extends the arm at the shoulder.

  This means that the latissimus dorsi muscle moves the upper arm downward to the rear.

• Medially rotates the upper arm.

  This means that the latissimus dorsi muscle rotates the upper arm inward around the axis of the bone (i.e. it rotates the upper arm toward the vertical midline of the body).

Pectineus

Pectineus

Pectineus

• Flexes the leg at the hip.

  This means that the pectineus muscle bends the hip joint such that there is a decrease in the angle between the upper leg and the torso.

• Adducts the leg at the hip.

  This means that the pectineus muscle moves the upper leg toward the vertical midline of the body (i.e. the action of closing your legs together from a spread out position).

Brystmuskel

Pectoralis Major

Pectoralis Major

• Abducts the arm at the shoulder.

  This means that the pectoralis major muscle moves the upper arm away from the vertical midline of the body (i.e. the action of raising your arms to the side).

• Medially rotates the upper arm.

  This means that the pectoralis major muscle rotates the upper arm inward around the axis of the bone (i.e. it rotates the upper arm toward the vertical midline of the body).

Lige mavemuskel

Rectus Abdominis

Rectus Abdominis

• Flexes the spine.

  This means that the rectus abdominis muscle bends the spine to the front (i.e. it moves the sternum down and forward towards the pelvis).

• Compresses the abdominal cavity.

  This means that the rectus abdominis muscle constricts the organs of the abdominal cavity and can increase intra-abdominal pressure (i.e. such as during a valsalva maneuver).

Lårmusklens lige hoved

Rectus Femoris

“quadriceps,” “quads” - the rectus femoris muscle forms part of the quadriceps femoris muscle group, along with vastus lateralis, vastus medialis, and vastus intermedius (vastus intermedius is not shown in the muscle anatomy section since it is located below rectus femoris).

• Extends the leg at the knee.

  This means that the rectus femoris muscle straightens the leg at the knee joint such that there is an increase in the angle between the lower leg and the upper leg.

• Performs some minor extension of the leg at the hip.

  This means that the rectus femoris muscle straightens the hip joint such that there is an increase in the angle between the upper leg and the torso.

Skræddermusklen

Sartorius

Sartorius

• Flexes the leg at the hip.

  This means that the sartorius muscle bends the hip joint such that there is a decrease in the angle between the upper leg and the torso.

• Flexes the leg at the knee.

  This means that the sartorius muscle bends the leg at the knee joint such that there is a decrease in the angle between the lower leg and the upper leg.

• Laterally rotates the upper leg.

  This means that the sartorius muscle rotates the upper leg outward around the axis of the bone (i.e. it rotates the upper leg away from the vertical midline of the body).

Halvsenede knæbøjer

Semimembranosus

“hamstrings” - the semimembranosus muscle forms part of the hamstrings muscle group, along with biceps femoris and semitendinosus.

• Flexes the leg at the knee.

  This means that the semimembranosus muscle bends the leg at the knee joint such that there is a decrease in the angle between the lower leg and the upper leg.

• Extends the leg at the hip.

  This means that the semimembranosus muscle straightens the hip joint such that there is an increase in the angle between the upper leg and the torso.

Halvtrinde knæbøjer

Semitendinosus

“hamstrings” - the semitendinosus muscle forms part of the hamstrings muscle group, along with semimembranosus and biceps femoris.

• Flexes the leg at the knee.

  This means that the semitendinosus muscle bends the leg at the knee joint such that there is a decrease in the angle between the lower leg and the upper leg.

• Extends the leg at the hip.

  This means that the semitendinosus muscle straightens the hip joint such that there is an increase in the angle between the upper leg and the torso.

Serratus Anterior

Serratus Anterior

The serratus anterior is often called the “boxer’s muscle” because it is highly developed in professional boxers due to the scapular protraction that occurs during a punching motion.

• Protracts the scapula.

  This means that the serratus anterior muscle pulls the scapula, or shoulder blade, forward and around the ribcage.

• Rotates the scapula upward.

  This means that the serratus anterior muscle turns the scapula, or shoulder blade, such that the bottom of the scapula moves upward and laterally (i.e. outward).

Flyndermusklen

Soleus

Soleus

• Plantar flexes the foot.

  This means that the soleus muscle extends the ankle such that the angle between the top of the foot and the lower leg increases (i.e. the action of rising up on your toes or the balls of your feet).

Teres Major

Teres Major

Teres Major

• Laterally rotates the upper arm.

  This means that the teres major muscle rotates the upper arm outward around the axis of the bone (i.e. it rotates the upper arm away from the vertical midline of the body).

Forreste skinnebensmuskel

Tibialis Anterior

Tibialis Anterior

• Dorsiflexes the foot.

  This means that the tibialis anterior muscle bends the ankle such that the angle between the top of the foot and the lower leg decreases (i.e. bringing your toes toward your knees).

• Supinates, or inverts, the foot (sekundær)

  This means that the tibialis anterior muscle bends the ankle inward to the side such that the sole of the foot faces inward.

Bugpressen

Transversus Abdominis

Transversus Abdominis

• Vigtig stabilisator af rygsøjlen

Trapezius

Trapezius

Trapezius

• Elevates the scapula.

  This means that the trapezius muscle lifts the shoulder girdle up (i.e. shrugging your shoulders).

• Retracts the scapula.

  This means that the trapezius muscle pulls the scapula, or shoulder blade, rearward such that it approaches the spine.

Trehovede armstrækker

Triceps Brachii

Triceps Brachii

• Extends the arm at the elbow.

  This means that the triceps brachii muscle straightens the elbow joint such that there is an increase in the angle between the forearm and the upper arm.

• Stræk i skulderleddet

Lårmusklens dybe hoved

Vastus Intermedius

“quadriceps,” “quads” - the vastus medialis muscle forms part of the quadriceps femoris muscle group, along with rectus femoris, vastus lateralis, and vastus intermedius (vastus intermedius is not shown in the muscle anatomy section since it is located below rectus femoris).

• Extends the leg at the knee.

  This means that the vastus medialis muscle straightens the leg at the knee joint such that there is an increase in the angle between the lower leg and the upper leg.

Lårmusklens ydre hoved

Vastus Lateralis

“quadriceps,” “quads” - the vastus lateralis muscle forms part of the quadriceps femoris muscle group, along with rectus femoris, vastus medialis, and vastus intermedius (vastus intermedius is not shown in the muscle anatomy section since it is located below rectus femoris).

• Extends the leg at the knee.

  This means that the vastus lateralis muscle straightens the leg at the knee joint such that there is an increase in the angle between the lower leg and the upper leg.

Lårmusklens indre hoved

Vastus Medialis

“quadriceps,” “quads” - the vastus medialis muscle forms part of the quadriceps femoris muscle group, along with rectus femoris, vastus lateralis, and vastus intermedius (vastus intermedius is not shown in the muscle anatomy section since it is located below rectus femoris).

• Extends the leg at the knee.

  This means that the vastus medialis muscle straightens the leg at the knee joint such that there is an increase in the angle between the lower leg and the upper leg.