Muscle Name
Frontalis
O: Galea Aponeurotica
I: Skin Near Eyebrow
A: Raises eyebrows, pulls scalp anteriorly
Deltoid
O: Clavicle, acromion, and spine of scapula
I: Deltoid tuberosity
A: Abducts, flexes, extends medially, and laterally rotates arm
O: Zygomatic bone
I: Angle of mouth
A: Elevates corners of mouth (in a smile or laugh)
Zygomaticus
O: Symphysis pubis and pubic crest
I: Cartilages of ribs 5-7 and xiphoid process
A: Flexes lumbar vertebrae, compresses abdomen
Rectus Abdominis
O: Transverse process of C 2-6
I: Ribs 1 and 2
A: Flexes and rotates neck, elevates first and second ribs
Scalenus
Brachioradialis
O: Lateral supracondylar ridge of humerus
I: Styloid process of radius
A: Flexes forearm
Tibialis Anterior
O: Lateral tibia
I: First metatarsal and medial cuneiform
A: Dorsiflexes and inverts foot
Sartorius
O: Anterior superior iliac spine
I: Medial side of tibial tuberosity
A: Flexes and laterally rotates thigh, flexes leg
O: Ribs 1-8 or 9
I: Vertebral border of scapula
A: Abducts scapula
Serratus Anterior
Daily Double: Who created the theory of evolution?
Charles Darwin
Daily Double: How much blood is in the human body?
1.2 - 1.5 gallons
Temporalis
O: Temporal Fossa
I: Coronoid process and ramus of the mandible
A: Closes mandible
O: T1-T4
I: Inferior, medial border of scapula
A: Adducts scapula
Rhomboideus Major
Daily Double: What is the largest bone in the body?
O: Sternum and clavicle
I: Mastoid process
A: One - rotates and extends head, Both - flexes neck
Sternocleidomastoid
Internal Oblique
O: Inguinal ligament, iliac crest
I: Linea alba, inferior 4 ribs
A: Compresses abdomen, laterally rotates trunk
Rectus Femoris
O: Anterior inferior iliac spine
I: Tibial tuberosity
A: Flexes thigh, extends leg
O: Ischium and pubis
I: Linea aspera and adductor tubercle of femur
A: Adducts, flexes, extends, and laterally rotates thigh
Adductor Magnus
O: Occipital bone and Temporal bone
I: Galea Aponeurotica
A: Pulls scalp posteriorly
Occipitalis
O: Anterior superior iliac spine
I: Lateral condyle of tibia by the iliotibial band
A: Flexes, medially rotates, and abducts thigh
Tensor Fasciae Latae
Semimembranosus
O: Ischial tuberosity
I: Medial tibial condyle
A: Extends thigh, flexes and medially rotates leg
Pectoralis Major
O: Clavicle, sternum, and ribs 1-7
I: Crest of greater tubercle of humerus
A: Adducts, flexes, and rotates arm medially
Trapezius
Occipital protuberance, ligamentum nuchae, C7-T12
O: Infraglenoid tuberosity of scapula, posterior surface of humerus
I: Olecranon process
A: Adducts arm, extends arm and forearm
Triceps Brachii
O: Ischial tuberosity, distal linea aspera of femur
I: Head of fibula, lateral tibia
A: Extends thigh, flexes and laterally rotates leg
Biceps Femoris