Muscles and Cavities of the Head and Neck Flashcards
What are the 3 main groups of muscles?
Muscles of facial expression
Muscles of mastication
Muscles of head & neck
Identify the muscles of facial expression
(Smile, shrugging, winking, frowning)
Frontalis muscles (top of forehead)
Orbicularis occuli muscles (circular muscles around eye)
Orbicularis Oris (upper and lower)
Identify the muscles of mastication
(Main focus on elevating and depressing the mandible - chewing)
Masseter muscle
Temporalis muscle
Medial pterygoid
Lateral pterygoid
What does the Temporalis muscle attach onto?
The Mandible
What does the Temporalis muscle assist with?
What other movemement function can it do?
Elevation of jaw
Moves in the lateral deviation (side-to-side)
Identify and explain where the Masseter muscle sits?
Attaches to the Zygomatic Arch
Where do the pterygoids sit?
Undeath the angle bone of the Mandible
Facial Muscles attach across the same bone and some of the facisa is attached onto …
the skin of face so when they contract they move some of the skin instead of a specific joint around skull
Identify the 4 main muscles of the neck (T.S.S.S)
Trapezius
Sternocleidomastoid (SCM)
Splenius capitis
Scalenes
Identify and describe the movement of the Scalene neck muscle
Neck movement and stablise head to talk, sing and chew
Identify the muscles of the neck
Trapezius - stablise the neck of skull on neck
Identify the 4 cavities of the Head & Neck
Cranial Cavity
Nasal
Oral cavity
Pharynx
What is the trachea?
The primary function is to to allow the passage of inspireed and expired air into and out of the lung
What is the esophagus?
Muscular tube that moves food & drink from the mouth to the stomach
What is peristalsis?
Wave muscular contraction that occurs through the GIT tract
