Origins
What 3 muscles originate off the Ischial Tuberosity?
Biceps Femoris, Semitendinosus, Semimembranosus
Where does the Deltoid insert?
Deltoid tuberosity of humerus
What actions do the Biceps Brachii, Coracobrachialis, Pectoralis Major and Anterior Deltoid all have in common?
Shoulder flexion
What are the 4 Rotator Cuff Muscles?
Suprspinatus, Infraspinatus, Teres Minor, Subscapularus
How do you define a Concentric Contraction of a muscle?
a type of muscle activation where the muscle shortens while it generates tension to move a load against gravity or resistance.
Name the origin of the Rectus abdominus
Pubic Symphysis, Pubic Crest
Which knee flexor inserts onto the head of the fibula?
Biceps Femoris
What triangular shaped muscle is a weak elbow extensor located lateral to the olecronon process?
Anconeus
What muscles make up the Triceps Surae?
Gastrocnemius & Soleus
Which muscles are an antagonists to themselves (7)?
Deltoid, Trapezius, Pec Major, Glute Medius, Glute Minimus, Adductor Magnus, Serratus Anterior
Name from Superior to Inferior: Origins of the Gastrocnemius, Rectus Femoris, Sartorius
Sartorius: ASIS, Rectus Femoris: AIIS, Gastrocnemius: Condyles of the femur
Insertion of the SCM muscle
lateral aspect of the mastoid process of the temporal bone and the lateral half of the superior nuchal line of the occipital bone
What are the actions of the Brachioradialis?
Elbow flexion, forearm supination and pronation
What are the muscles that are responsible for extending the knee?
Quadriceps muscles: Rectus Femoris, Vastus Lateralis, Vastus Medialis, Vastus Intermedius
Gracilis is the only Adductor Muscle that crosses which joint?
Tibiofemoral (knee joint)
Name the origin(s) of all fibers of the Deltoid muscle
lateral third of the clavicle, the acromion process, and the spine of the scapula
Which muscles insert at the lesser trochanter of the femur?
Psoas Major and Iliacus (also known as Iliopsoas muscle)
Name all actions that the Glenohumeral joint can perform
Flexion, extension, adduction, abduction, medial rotation, lateral rotation, circumduction
Name the 5 Adductor muscles
Pectineus, Adductor Brevis, Adductor Longus, Adductor Magnus, Gracilis
What is the term for the muscle that is responsible for assisting the agonist muscle?
Synergist
What is the definition of "Origin" of a muscle:
1)closer to the center of the body
2)the fixed attachment point of a muscle
Which muscle inserts on the intertubercular groove (also called the bicipital groove) of the humerus and is responsible extending, adducting, and medially rotating the shoulder.
Latissimus Dorsi
Describe how a muscle can lengthen while it is contracting, provide an example:
Eccentric contraction. Ex: downward phase of a push-up
Name the 3 muscles responsible for wrist flexion and the 3 muscles that assist with wrist flexion:
Primary action: flexor carpi radialis, flexor carpi ulnaris, and palmaris longus. Assist w/ wrist flexion: flexor digitorum superficialis and flexor digitorum profundus
What are the primary actions of the TFL muscle?
Hip Flexion, Abduction, and Internal/Medial Rotation