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Flashcards in Muscles and bones Deck (30)
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1

Where is the orbicularis occuli?

Circular around each eye for squinting

2

Where is the orbicularis orris?

Circular around the lips- for pouting

3

Where is the Buccinator?

In the cheek from the lip corner to external oblique ridge- keeps food between teeth when chewing

4

Where is the zygomaticus and Risoris?

Both together from the lip corner to zygomatic arch- for smiling or elevating lips

5

Where is the depressor angularis?

From lip corner downwards- to depress lips

6

Where does the temporalis originate from?

Temporal bone

7

Where does the temporalis attach to?

The Coronoid

8

What movement of the jaw does the temporalis do?

Closes (elevates)

9

Where does the masseter originate from?

The zygomatic arch

10

Where does the masseter attach to?

Outer angle

11

What jaw movement does the masseter do?

Closes

12

Where does the medial pterygoid originate from?

The medial pterygoid plate

13

Where does the medial pterygoid attach to?

Inner angle

14

What jaw movement does the medial pterygoid do?

Closes and swings

15

Where does the lateral pterygoid originate from?

Lateral pterygoid plate

16

What does the lateral pterygoid attach to?

Inner condyle

17

What jaw movement does the lateral pterygoid do?

Forwards and swings

18

Where does the mylohoid originate from?

Mylohyoid ridge

19

Where does the mylohyoid attach to?

Hyoid bone

20

What jaw movement does the mylohyoid do?

Opens

21

Where does the digastric originate from?

The digastric depression

22

Where does the digastric attach to?

The hyoid bone

23

What jaw movement does the digastric do?

Opens

24

What are the four muscles of mastication?

Masseter
Temporalis
Medial pterygoid
Lateral pterygoid

25

What action does the masseter give?

Raises lower jaw

26

What action does the temporalis give?

Raises and retraces

27

Where is the mylohyoid muscle?

It is situated above the anterior belly of the digastric muscle

28

What is the cranium?

The skull or ‘brain box’

29

What is the name of the bones forming the top of the head?

Parietal

30

What muscles are used for smiling and elevating lips?

Zygomaticus and risoris