Head
What is orbicularis oculi?
This muscle gently closes the eyelids using its palpebral part.
This is the largest muscle of the nose, with transverse and alar parts.
nasalis
These neck muscles elevate ribs 1–2 during forced inspiration.
scalenes
Strain of these muscles causes pain with deep inspiration.
levatores costarum
It draws central tendon down and forward during inspiration
Diaphragm
This small muscle draws the eyebrows together, creating vertical wrinkles.
orrugator supercilii
This small muscle pulls the eyebrows down to make transverse wrinkles
procerus
This muscle helps expand the thorax during overhead motion by stabilizing the scapula.
serratus anterior
This muscle depresses ribs and costal cartilages anteriorly.
transversus thoracis
What does the Levatores costarum do?
This muscle elevate your ribs
What is buccinator?
This cheek muscle prevents food from collecting between gums and teeth.
The most powerful muscle of mastication.
masseter
These muscles depress ribs and may mimic pleuritic pain.
Subcostals
What are the innermost intercostals?
Weakness of these muscles makes coughing inefficient.
It flexes, adducts, and medially rotates the arm
MAJOR Pectoralis Muscle
This muscle protrudes the lower lip, showing pouting.
mentalis
This is the major protractor of the mandible.
lateral pterygoid
What is serratus posterior inferior?
These posterior muscles depress ribs 9–12.
These muscles are heavily recruited during asthma attacks.
Internal intercostals muscles
Protracts and rotates scapula and holds it against thoracic wall
Serratus Anterior Muscle
This muscle elevates the upper lip and flares nostrils.
levator labii superioris alaeque nasi
What is depressor labii inferioris?
This muscle depresses/everts the lower lip in sadness.
Tight pectoralis minor can compress this anatomical region.
thoracic outlet
What is a mastectomy?
Pectoralis major is commonly used for reconstructive surgery following this procedure.
What does the Internal Innercostal muscles do?
Prevent pushing out or drawing in of intercostal spaces in inspiration and expiration, lower ribs in forced expiration