Muscles from week 9 lab
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25 Terms
What is the origin of the Tensor Fasciae Latae (TFL)?
It originates from the anterior part of the iliac crest and anterior superior iliac spine.
What is the insertion of the Tensor Fasciae Latae (TFL)?
Iliotibial band (IT band), which attaches to the lateral condyle of the tibia.
What action does the Tensor Fasciae Latae (TFL) perform?
It assists in hip flexion, abduction, and medial rotation.
What is the origin of the Sternocleidomastoid (SCM)?
The manubrium of the sternum and the medial portion of the clavicle.
What is the insertion of the Sternocleidomastoid (SCM)?
The mastoid process of the temporal bone.
What action does the Sternocleidomastoid (SCM) perform?
It flexes and rotates the head.
What is the origin of the Trapezius muscle?
The external occipital protuberance, nuchal ligament, and spinous processes of thoracic vertebrae.
What is the insertion of the Trapezius muscle?
The lateral third of the clavicle, acromion, and spine of the scapula.
What action does the Trapezius muscle perform?
It elevates, retracts, and rotates the scapula.
What is the origin of the Levator Scapulae muscle?
The transverse processes of the first to fourth cervical vertebrae.
What is the insertion of the Levator Scapulae muscle?
The superior part of the medial border of the scapula.
What action does the Levator Scapulae muscle perform?
It elevates the scapula and rotates it downward.
What is the origin of the Latissimus Dorsi muscle?
The spinous processes of T7-L5 vertebrae, thoracolumbar fascia, and the iliac crest.
What is the insertion of the Latissimus Dorsi muscle?
The floor of the intertubercular sulcus of the humerus.
What action does the Latissimus Dorsi muscle perform?
It extends, adducts, and medially rotates the shoulder.
What is the origin of the Deltoid muscle?
The lateral third of the clavicle, acromion, and spine of the scapula.
What is the insertion of the Deltoid muscle?
The deltoid tuberosity of the humerus.
What action does the Deltoid muscle perform?
It abducts the arm and assists in flexion and extension.
What is the origin of the Pronator Teres?
The medial epicondyle of the humerus and the coronoid process of the ulna.
What is the insertion of the Pronator Teres?
The midshaft of the radius.
What action does the Pronator Teres perform?
The Pronator Teres pronates the forearm.
Where does the preforms originate from?
The anterior surface of the sacrum.
Where does the piriformis insert?
The superior border of the greater trochanter of the femur.
What is the action of the piriformis muscle?
It primarily laterally rotates the hip.