Head, Neck, & Trunk Muscles Flashcards
Frontails
Location: Forehead
Function: Raise eyebrows
Orbicularis Oculi
Location: around eyes
Function: Close eyes
Nasalis
Location: Nose
Function: modify size of nostrils
Orbicularis Oris
Location: Encircles Mouth
Functions: closes lips, kissing motion
Zygomaticus
Location: Connects cheekbones to the corner of the mouth
Function: smiling
Platysma
Location: Front and side of mouth
Function: pulls corners of mouth down, opens mouth wide
Masseter
Location: Connects cheekbones to corners of the mouth
Function: Closes jaw
Temporalis
Location: muscle over temporal bone
Function: assist masseter with closing jaw
Sternocleidomastoid
Location: Side of neck
Function: lift and rotate head
Pectoralis Major
Location: Upper chest
Function: flex arm
Rectus Abdominis
Location: center of abdominal
Function: flex and rotation of trunk
Internal Oblique
Location: Right and left side of abdomen
Function: flex and rotation of trunk
Trapezius
Location: Upper back and neck
Function: Extension of head
Erector Spinae
Length of verbal column
Function: rotation and flexion of vertebral column
Diaphragm
Location: separated thoracic and abdominal cavity
Function: enlarges thoracic cavity for inhalation
