Anatomy 5 - The Skull Flashcards Preview

Second Year - Anatomy CA21007 > Anatomy 5 - The Skull > Flashcards

Flashcards in Anatomy 5 - The Skull Deck (71):
1

Functions of the skull

Support and protect; the brain, cranial nerves, organs of special sense, beginning of respiratory and alimentary tract.

2

Bones of the neurocranium

Frontal, parietal, occipital, temporal, ethmoid and sphenoid

3

Bones of the viscerocranium

Nasal, lacrimal, maxilla, mandible, zygomatic, hyoid, palatine, inferior conchae and the vomer

4

What does the neurocrainium house

The brain

5

What does the viscerocranium house

Soft tissue and it also allows for attachment of the muscles of facial expression

6

What is within the upper viscerocranium

The orbits and the nose

7

What is within the lower viscerocranium

The mandible and the hyoid

8

Characteristics of the hyoid

It doesn't articulate with any other bones and is fully embedded in soft tissue

9

What bone forms most of the back wall of the orbit

The sphenoid

10

What does the sphenoid articulate with

The occipital

11

What does the parietal articulate with

The frontal, occipital, temporal and sphenoid

12

What bone makes up the inner medial wall of the orbit

The ethmoid

13

What are cranial sutures

Articulation between bones of the cranium which are initially open but may fuse with time

14

Where does the coronal suture sit

Between the frontal and parietal bones

15

What suture splits the skull anteriorly and posteriorly

The coronal suture

16

Where does the sagittal suture cut

It runs between the two parietals

17

Describe the squamosal suture

It is flat, runs along the temporal and parietal and the bones overlap

18

Where is the metopic suture

Between the left and right frontal (only present in children)

19

If the metopic suture is still present in adults it is known as

A retained metopic suture

20

Where does the basilar suture cut

Between the occipital and sphenoid bones

21

When does the basilar suture fuse

Between 16 and 18 years old

22

Where are the para-nasal sinuses found

On either side of your nose

23

Where is the maxillary sinus

At the top of the head

24

What is the characteristic of the frontal sinus

It has a unique pattern

25

Where is the sphenoid sinus located

Just below the pituitary

26

What do the eyes sit in

The orbits

27

How many bones make up the orbits

Seven

28

What is in the extra space in the oribit

Fat

29

Movement of the eye is controlled by

Six extrinsic muscles

30

What are fontanelles

Fibrous tissue separations between the flat bones of the neurocranium

31

What is the function of fontanelles

To allow for growth of the neurocranium

32

When does the frontal fontanelle close

By 18-24 months old

33

Where is the anterior cranial fossa and what does it contain

It sits just above the orbits and contains the frontal lobe

34

Where is the middle cranial fossa and what does it contain

Sits just above the nose and contains the temporal lobes

35

Where is the posterior cranial fossa and what does it contain

It sits below the nose and contains the cerebellum, medulla and pons.

36

What is the posterior cranial fossa part of

The inter-cranial cavity

37

Where is the posterior cranial fossa in the intercranial cavity located

Between the foramen magnum and tentorium cerebelli

38

Dentition - medial

Towards the midline

39

Dentition - distal

Away from the midline

40

Dentition - labial

Towards the lips

41

Dentition - buccal

Towards the cheeks

42

Dentition - lingual

Towards the teeth

43

How many teeth are in a complete set of permanent dentition

32

44

What are the muscles of facial expression controlled by

The facial nerve CN VII

45

What are sphincter

Rings of muscles surrounding and serving to guard or close an opening or a tube

46

What are the sphincter on the face

The lips and the eyelids

47

How many muscles make up the muscles of mastication

4

48

What are the three elevators of the mandible

Masseter, temporalis and the medial pterygoid

49

The one depressor of the mandible is the

Lateral pterygoid

50

What nerve are the muscles of mastication controlled by

The trigeminal nerve CN V

51

What are the five layers of the scalp

Skin, Connective tissue, Aponeurosis, Loose areolar connective tissue and Pericranium = SCALP

52

Characteristics of the scalp

Highly vascularised and has extensive anastomoses between the vessels

53

Where does the arterial supply for the scalp come from

Arteries in the neck and inteercranial arteries

54

What are the 12 cranial nerves

Olfactory, optic, oculomotor, trochlear, trigeminal, abducens, facial, vestibulocochlear, glossopharyngeal, vagus, (spinal) accessory and hypoglossal
OLd OPen OCeans TRoubled TRIbesmen ABout Fish VEnom Giving Very ACute Headaches

55

What are the three region of the ear

The external, middle and internal ear

56

What is within the temporal bone

The middle and inner ear

57

What are the three inner ear ossicles

Malleus, incus and stapes

58

Function of olfactory nerve

It is a sensory nerve involved with smell

59

Function of optic nerve

It is a sensory nerve involved in vision

60

Function of the oculomotor nerve

It is a motor nerve that controls eye movemnt, eyelid opening, pupillary constriction and lens accomidation

61

Function of the trochlear nerve

It is a motor nerve and is involved in the superior oblique muscle of the eye

62

Function of the trigeminal nerve

It is a sensory nerve involved in facial sensation and somatosensation to anterior 2/3 of tounge
it is a motor nerve involved in the opening and closing of the jaw

63

Function of abducens nerve

It is a motor nerve involved in lateral rectus muscle of the eye

64

Function of facial nerve

It is a sensory nerve involved in taste to the anterior 2/3 of the tounge
It is a motor nerve involved in facial expression, lacrimation and salivation

65

What is the vestibuocochlear nerve made up of

It is made up if the vestibular sensory nerve and the cochlear sensory nerve

66

Function of the vestibular nerve

It is involved in equilibrium motion

67

Function of the cochlear nerve

It is involved in hearing

68

Function of the glossopharengeal nerve

It is a sensory nerve involved in somatosenation and taste to posterior 2/3 of the tounge
It is a motor nerve involved in swallowing

69

Function of vagus nerve

It is a sensory nerve involed in the tase of the epiglottis
It is a motor nerve involved in swallowing, talking and coughing

70

Function of the spinal accessory nerve

It is a motor nerve involved with the sternocleidomastoid and trapezius (shoulder shrugging and head turning)

71

Function of the hypoglossal nerve

It is a motor nerve involved in all intrinsic and extrinsic muscles of the tongue