Flashcards in Muscles and bones Deck (30)
Where is the orbicularis occuli?
Circular around each eye for squinting
Where is the orbicularis orris?
Circular around the lips- for pouting
Where is the Buccinator?
In the cheek from the lip corner to external oblique ridge- keeps food between teeth when chewing
Where is the zygomaticus and Risoris?
Both together from the lip corner to zygomatic arch- for smiling or elevating lips
Where is the depressor angularis?
From lip corner downwards- to depress lips
Where does the temporalis originate from?
Where does the temporalis attach to?
What movement of the jaw does the temporalis do?
Where does the masseter originate from?
The zygomatic arch
Where does the masseter attach to?
What jaw movement does the masseter do?
Where does the medial pterygoid originate from?
The medial pterygoid plate
Where does the medial pterygoid attach to?
What jaw movement does the medial pterygoid do?
Closes and swings
Where does the lateral pterygoid originate from?
Lateral pterygoid plate
What does the lateral pterygoid attach to?
What jaw movement does the lateral pterygoid do?
Forwards and swings
Where does the mylohoid originate from?
Where does the mylohyoid attach to?
What jaw movement does the mylohyoid do?
Where does the digastric originate from?
The digastric depression
Where does the digastric attach to?
The hyoid bone
What jaw movement does the digastric do?
What are the four muscles of mastication?
What action does the masseter give?
Raises lower jaw
What action does the temporalis give?
Raises and retraces
Where is the mylohyoid muscle?
It is situated above the anterior belly of the digastric muscle
What is the cranium?
The skull or ‘brain box’
What is the name of the bones forming the top of the head?