Muscles Of The Trunk Posterior Flashcards
What is the action of the Splenius Capitis?
Extends and rotates head
What muscle extends and rotates the head?
Splenius Capitis
Where might you find the Splenius Capitis?
Muscle running along head to trunk
What is the action of the Rhomboids?
Adducts the scapula
Where might you find the Rhomboids?
Between scapula and spine
What muscle adducts the scapula?
Rhomboids
What is the action of the Supraspinatus?
Abducts the arm, holds humerus in socket
What muscle abducts arm and holds humerus in its socket?
Supraspinatus
Where might you find the Supraspinatus?
Top of the scapula (above spine)
Where might you find the Infraspinatus?
Scapula (below spine)
What is the action of the Infraspinatus?
Lateral rotation of humerus, stabilise humerus in its socket
What muscle laterally rotates the humerus and stabilises it in its socket?
Infraspinatus
What is the action of the Teres Major?
Adducts and medially rotates humerus, extends the shoulder
Where might you find the Teres Major?
Side of (inferior) scapula to humerus
(inferior to minor)
What muscle adducts and medially rotates humerus; extends shoulder?
Teres Major
What is the action of the Teres Minor?
Lateral rotation of humerus; stabilises humerus in its socket
What muscle laterally rotates humerus and stabilises it in its socket?
Teres Minor
Where might you find the Teres Minor?
Side of scapula to humerus (superior to major)
Where might you find the Erector Spinae?
Group of ribbon-shaped muscles on either side of spine
What is the action of the Erector Spinae?
Extends vertebral column
What muscle extends the vertebral column?
Erector Spinae
What is the action of the Gluteus Minimus?
Abducts and rotates femur medially
What muscle(s) abducts and rotates femur medially?
Gluteus Minimus & Gluteus Medius
Where might you find the Gluteus Minimus?
Fan-shaped muscle underneath (deep) Gluteus Medius
What is the action of the Gluteus Maximus?
Extends the hip, raises trunk, lateral rotation of hip/femur
What muscle extends hip, raises trunk, and laterally rotates hip/femur?
Gluteus Maximus
Where might you find the Gluteus Maximus?
Main bulk of buttock
Where might you find the Gluteus Medius?
Higher on the pelvis continuing deep to Gluteus Maximus
What is the action of the Gluteus Medius?
Abducts and rotates medially
What muscle(s) abduct and rotate femur medially?
Gluteus Medius & Gluteus Minimus
What is the action of the Latissimus Dorsi?
Draws arm backwards, adducts and rotates it medially
What muscle draws arm backwards, adducts, and rotates it medially?
Latissimus Dorsi
Where might you find the Latissimus Dorsi?
Covers back
