Exam 4 Regional Anatomy; Head & Neck Flashcards Preview

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Flashcards in Exam 4 Regional Anatomy; Head & Neck Deck (153)
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1

The Skull is composed of how many bones?

22

2

The skull consists of what two sections?

Cranial Bones (Neurocranium, Cranium, Cranial Vault)
Facial Bones (Facial Skeleton)

3

What is the only Moveable bone of the skull other than the ear ossicles?

Mandible

4

The Neurocranium (Crainal Vault) Provides what?

Case for the brain, Cranial meninges, cranial nerves, & associated structures

5

The Facial Skeleton may also be called?

Viscerocranium or Splanchnocranium

6

What bones form the Neurocranium in an adult?

-Frontal Bone -1
-Parietal Bones -2
-Temporal Bones -2
-Occipital Bone -1
-Sphenoid Bone -1
-Ethmoid Bone -1

7

How are most bones of the Neurocranium united?

Fibrous Interlocking Sutures

8

What is the space in the skull within the neurocranium occupied by the brain & broadly speaking bounded by the Calvaria & Basicranium?

Cranial Vault

9

What is the Calvaria (Skullcap)?

Domelike roof of the cranium

10

What makes up the Calvaria?

-Superior portions of Frontal Bone
-Occipital Bone
-Parietal Bones

11

What is the Basicranium?

(Cranial Base) Floor of the cranium

12

What makes up the Basicranium?

-Occipital
-Sphenoid
-Temporal (Petrous portion)
-Vomer
-Palatine(s)
-Portion of Maxillae

13

What are the functions of the Cranial Bones?

-Protect Brain
-House Ear Ossicles
-Muscle Attachment for Jaw, Neck, & facial Muscles

14

What are the functions of the Facial Bones?

-Protect Delicate Sense Organs
-Support entrances to Digestive & Respiratory System

15

Which bone forms the roof of the orbits, supraorbital margin, frontal sinus, & anterior cranial floor?

Frontal Bone

16

By what age is the Frontal suture gone?

6yrs

17

What is it called if the frontal suture does not close?

Metopic Suture

18

What bone forms the sides & roof of the cranial cavity?

Parietal

19

What bone is the zygomatic process, external auditory meatus, mastoid process, styloid process, and Temporal squama on?

Temporal

20

The mandibular fossa, & petrous portion are found on which bone?

Temporal

21

The Mandibular fossa & Mandible articulate to form what joint?

Temporomandibular Joint

22

What nerve passes through the Stylomastoid Foramen?

Facial Nerve (CN-VII)

23

What is significant about the petrous portion of the Temporal Bone?

Houses the components of the inner ear & conveys the Vestibulocochlear Nerve (CN-VIII)

24

What Foramen are found on the Temporal Bone?

Stylomastoid Foramen (CN-VII)
Carotid Foramen (Carotid Artery)
Jugular Foramen (Jugular Vein)

25

What is the attachment site for the Ligamentum Nuchae?

External Occipital Protuberance on the Occipital Bone

26

On which bone are the Superior & Inferior Nuchal Lines located?

Occipital Bone

27

What are some key structural aspects of the Occipital Bone & what is the significance?

-Foramen Magnum: Spinal Cord pass through to spinal Column
-Occipital Condyles: Form joint with 1st Cervical Vertebra

28

Which bone is considered the Keystone bone because it articulates with all other cranial bones?

Sphenoid Bone (Located in the middle part of the base of the skull)

29

What is the name of the attachment site for some of the muscles that move the mandible & are found on the Sphenoid Bone?

Pterygoid Processes

30

What is the name of the muscles that connect to the Pterygoid Processes?

Lateral Pterygoid Muscles
Medial Pterygoid Musces