Upper Extremity
This major chest muscle inserts on the lateral lip of the bicipital groove of the humerus.
What is the pectoralis major.
This large thigh muscle group originates from the ischial tuberosity and extends the hip.
What are the hamstrings.
This "yes" muscle flexes the neck and rotates the head to the opposite side.
What is the sternocleidomastoid.
This erector spinae group lies closest to the spine and extends the vertebral column.
What is the spinalis.
This is the strongest muscle involved in chewing based on bite force.
What is the masseter.
Originating from the supraglenoid tubercle and coracoid process, this muscle flexes the elbow.
What is the biceps brachii.
This quadriceps muscle originates from the Anterior Inferior Iliac Spine and extends the knee.
What is the rectus femoris.
This chewing muscle originates from the zygomatic arch and elevates the mandible.
What is the masseter.
This muscle spans 2–4 vertebrae and is the primary stabilizer of the vertebral column.
What is the multifidus.
This is the only muscle that attaches to the body strictly by a tendon on just one end (other end attaches to skin).
What is the platysma.
This shoulder muscle has three heads and is the primary abductor of the arm.
What is the deltoid.
This calf muscle inserts on the calcaneus via the Achilles tendon.
What is the gastrocnemius.
This muscle closes the eye and surrounds the orbit.
What is the orbicularis oculi.
Originating on the iliac crest, this muscle inserts on ribs and helps side-bend the torso.
What is the quadratus lumborum.
This is the only muscle that flexes the distal interphalangeal joints of the fingers.
What is the flexor digitorum profundus.
This forearm muscle originates on the lateral supracondylar ridge and assists in elbow flexion with the thumb up.
What is the brachioradialis.
This deep hip muscle originates on the anterior sacrum and laterally rotates the thigh.
What is the piriformis.
Responsible for protruding the tongue, this muscle is the largest of the intrinsic/extrinsic tongue muscles.
What is the genioglossus.
These deep back muscles help rotate the spine and include the rotatores.
What is the transversospinalis group.
This is the largest muscle in the back, responsible for extending, adducting, and internally rotating the humerus.
What is the latissimus dorsi.
This deep posterior forearm muscle originates on the ulna and inserts on the radius to supinate the forearm.
What is the supinator.
This medial thigh muscle originates from the inferior pubic ramus and inserts on the linea aspera to adduct the thigh.
What is the adductor longus.
This circular muscle surrounds the mouth, allowing you to pucker your lips as in kissing.
What is the orbicularis oris.
This cervical muscle group elevates the ribs during forced inhalation and can contribute to neck pain when tight.
What are the scalenes.
This muscle is often called the “tail wagging” muscle in humans because it stabilizes the coccyx.
What is the coccygeus.