Chapter 7 Flashcards
Pectoralis Major
Adducts, flexes, and medially rotates the humerus inward.
Pectoralis Minor
Depresses and abducts the scapula, rotates it down and stabilizes it.
Serratus Anterior
Abducts the scapula and rotates it upward. It also lifts the ribs when the scapula is fixed.
Internal Oblique
Compresses the abdomen and can rotate the vertebral column
External Oblique
Compresses the abdomen and can rotate the vertebral column
Rectus Abdominus
Flexes the lumber region of the vertebral column and compresses the abdomen
Trapezius
Elevates and/or adducts the scapula, rotates the scapula up or down, and draws the head back when the shoulders are fixed.
Rhomboideus Major
Elevates and rotates the scapula downward while adducting the arm
Infraspinatus
It laterally rotates and abducts the arm at the shoulder
Teres Minor
Laterally rotates, extends, and adducts the humerus at the shoulder and stabilizes the elbow joint
Teres Major
Assists the extension of the humerus, medially rotates the humerus, helps rotate the scapula downward.
Latissimus Dorsi
Extends, adducts, and medially rotates the arm at the shoulder. Also, draws back the arm inferiorly and posteriorly.
Lumbodorsal Fascia
Connective tissue that acts as the origin for muscles at the lower back.
Deltoid
Abducts the arm at the shoulder, flexes and medially rotates the arm at the shoulder, and extends and laterally rotates the arm at the shoulder
Biceps Brachii
Flexes the arm and forearm at the shoulder and elbow respectively and rotates the radius to supinate the hand.
Brachialis
Flexes the forearm at the elbow
Triceps Brachii
Antagonistic to the brachialis, extends the forearm and arm at the elbow and shoulder
Extensor Carpi Radialis
Extends and abducts the hand at the wrist functioning in radial hand movement at the wrist
Pronator Teres
Pronates the forearm and aids in flexing the forearm at the elbow
Brachioradialis
Flexes the forearm at the elbow and supinates and pronates the forearm at the joint between the radius and ulna so the forearm is in a neutral position.
Flexor Carpi Radialis
Flexes and abducts the hand at the wrist
Supraspinatus
Aids the deltoid when abducting the arm at the humerus
Extensor Digitorum
Extends the four medial digits, spreads the digits as it extends them, extends the wrist if the fingers are flexed.
Tensor Fasciae Latae
Flexes and rotates the thigh way from the midline at the hip
Pectineus
Flexes and draws the thigh toward the midline at the hip and medially rotates the thigh
Adductor Longus
Laterally rotates the thigh toward the midline and flexes the thigh at the hip
Sartorius
Flexes the calf at the knee and flexes, abducts, and laterally rotates the thigh if flexed at the hip
Extensor Digitorum Longus
Extends the four lateral toes and everts the foot at the ankle
Vastus Lateralis
Extends the leg at the knee
Rectus Femoris
Extends the leg at the knee. Also flexes the thigh at the hip.
Gluteus Maximus
Laterally rotates and extends the thigh at the hip
Semitendinosus
Flexes the leg at the knee, extends the thigh at the hip, and medially rotates the thigh
Biceps Femoris
Flexes the leg at the knee, extends the thigh at the hip, and rotates the thigh laterally if flexed.
Calcaneal Tendon
Serves as the insertion point for the superficial muscles of the calf
Vastus Medialis
Extends the leg at the knee
Gastrocnemius
Plantar flexes the foot at the ankle and flexes the leg at the knee, (when not bearing weight)
Soleus
Plantar flexes the foot at the ankle, it is located beneath the gastrocnemius.
Tibalis Anterior
Dorsally flexes the foot at the ankle and inverts and adducts the foot
Peroneus Longus
Everts and abducts the foot. It also weakly provides plantar flexion of the foot at the ankle and everts the foot at the intertarsal joints.
Semimembranosus
Flexes the leg at the knee, extends the thigh at the hip, and medially rotates the tibia.
Patellar Ligament
Connects the tibial tuberosity to the quadriceps tendon.
