This muscle has clavicular and sternal portions, inserts on the humerus, and has a large number of actions on the shoulder.
What is pectoralis major.
100
This muscle's origins are the coracoid process and and the supraglenoid tubercle, with a shared insertion at the radial tuberosity.
What is biceps brachii.
100
This subcomponent of the quadriceps is an agonist of hip flexion.
What is rectus femoris.
100
These four muscles share an insertion via the patellar tendon and are the agonists of knee extension.
What are the quadriceps (rectus femoris, vastus medialis, vastus intermedius, and vastus lateralis).
100
These two muscles form the three heads of the triceps surae, which inserts into the calcaneal tuber via the Achilles tendon.
What are gastrocnemius and soleus.
200
This muscle is part of the rotator cuff and inserts on the lesser tubercle of the humerus.
What is subscapularis.
200
The common flexor tendon is the shared origin for all but one of the following:
Flexor carpi ulnaris, flexor carpi radialis, flexor digitorum profundus, and flexor digitorum superficialis.
What is flexor digitorum profundus.
200
This hip extensor inserts onto the tibia as part of the pes anserinus.
What is semitendinosus.
200
This muscle initiates knee flexion.
What is popliteus.
200
Of the soleus, gastrocnemius, anterior tibialis, and posterior tibialis, this muscle is not a plantar flexor.
What is anterior tibialis.
300
This large muscle has origins on the vertebrae, ribs, and pelvis, and is a major extensor and adductor of the humerus at the glenohumeral joint.
What is latissimus dorsi.
300
This muscle is an agonist of elbow flexion which inserts on the proximal ulna.
What is brachialis.
300
This hip extensor inserts into the head of the fibula.
What is the long head of biceps femoris.
300
This leg muscle attaches to both femoral condyles and is an agonist of knee flexion.
What is gastrocnemius.
300
This muscle originates on both bones of the leg and the interosseus membrane, and is involved in inversion of the foot.
What is posterior tibialis.
400
These two muscles insert on the vertebral border of the scapula and are agonists of scapular retraction.
What are the rhomboids.
400
Biceps brachii is an agonist of elbow flexion, but this muscle works along with the biceps as an agonist of another forearm motion.
What is supinator.
400
These two large muscles originating on the ilium and inserting on the femur are, respectively, an agonist and antagonist of hip flexion.
What are iliopsoas and gluteus maximus.
400
These muscles contract eccentrically during knee extension to limit the force of the quadriceps and protect the ACL.
What are the hamstrings (biceps femoris, semitendinosus, and semimembranosus)
400
These two critical aspects of human walking and running explain the differences in size and number of muscles in the leg's posterior vs. anterior compartments.
What are the propulsive force of plantarflexion required to move the entire body (posterior) vs. the much smaller force required to dorsiflex the foot to gain ground clearance (anterior).
500
Although the three sub-units of this muscle have some different actions, they all participate heavily in shoulder abduction.
What is the deltoid.
500
The long head of this muscle is its only attachment to the scapula.
What is triceps (brachii)
500
This is the only deep rotator of the hip with a vertebral origin.
What is piriformis.
500
These two knee flexors also have a small varus (adduction) force moment when they contract, potentially protecting against ACL injury.
What are the medial hamstrings, semitendinosus and semimembranosus.