Upper Limb
A muscle with 3 heads with an insertion on the olecranon process. Used for elbow extension
What is the Triceps Branchii?
A contraction that results in movement
What is a dynamic contraction?
A superficial muscle in the quadriceps group that produces hip flexion and knee extension
What is the rectus femoris?
Known as the kissing muscle
What is the orbicularis oris?
A muscle that flexes the trunk
What is the rectus abdominis?
Large triangle-shaped muscle that can abduct the arm
What is the deltoid?
What is a concentric contraction?
Muscle that originates on the ischial tuberosity and femur (has 2 heads). Produces hip extension and knee flexion
What is the Biceps Femoris?
What is the frontalis muscle?
A muscle used to stabilize the scapula by pulling it downwards
What is the pectoralis minor?
A muscle that originates at the anterior distal half of the humerus and inserts on the ulnar tuberosity. Provides elbow flexion but DOES NOT provide pronation/supination
What is the brachialis?
A contraction that results in no movement
What is an isometric contraction?
A muscle that originates on the femur and inserts via the Achilles Tendon. Produces plantar flexion and knee flexion
What is the gastrocnemius?
A muscle used for closing eyelids
What is the orbicularis Oculi?
A fan-shaped muscle that spans across the ribs and inserts onto the scapula. Used for protraction of scapula and stabilization. Is known as the "Boxer's muscle"
What is the serratus anterior?
A muscle that originates on the lateral epicondyle of the humerus and has 4 insertions. Used for extending of fingers (not the thumb)
What is the extensor digitorum?
A muscular contraction that accompanies constant velocity limb movements around a joint
What is an isokinetic contraction?
A muscles that originates from the Anterior Superior Iliac Spine and inserts onto the medial surface of the tibial shaft. Weakly produces hip and knee flexion.
What is the sartorius?
A muscle that originates from the temporal process of the zygomatic bone. Used to move the upper lip. Used in smiling and laughing
What is the zygomaticus major?
A muscle that originates at the inferior angle of the scapula and inserts onto the humerus. Works with the latissimus dorsi to adduct the arm
What is the teres major?
A muscle that originates on the anterior distal fourth of the ulna, and inserts on the anterior distal fourth of the radius. Assists with pronation
What is the pronator quadratus?
A contraction where the tension in the muscle remains unchanged despite a change in muscle length
What is an isotonic contraction?
A muscle that originates at the anterior medial aspect of the fibula and inserts at the base of the distal phalanx of the big toe. Used to extend the big toe, as well as dorsiflex and invert the foot
What is the extensor hallucis longus?
A neck muscle that originates from the 3rd to the 6th cervical vertebrae and inserts on the upper face of the first rib. Elevates 1st rib and produces lateral flexion
What is the anterior scalene?
The "top-most" muscle of the rotator cuff group
What is the supraspinatus?