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Anatomy Head and Neck > Week 3 Dry Room > Flashcards

Week 3 Dry Room Flashcards

1
Q

Which bone forms posterior boundary of the anterior cranial fossa

A

Body

Lesser and Greater wings of Sphenoid bone

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2
Q

Name features of the anterior cranial fossa

A

Cribiform plate of ethmoid bone

Crista galli in the modline

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3
Q

Which bone forms the anterior boundary of the middle cranial fossa

A

Tubercle Sellae

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4
Q

Which bones form the floor of the middle cranial fossa

A

Greater wings of sphenoid bone and temporal bone (squamous and petrous parts)

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5
Q

Which four bones come together at the pterion

A

Parietal
Temporal
Frontal
Sphenoid

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6
Q

Which bone forms the anterior and which the posterior border of the posterior cranial fossa

A

Anterior- Dorsum Sellae

Posterior- Internal occipital protuberance

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7
Q

What structures pass through the small foramina of the skull

A

Emissary vein

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8
Q

Structures that pass through the cribriform plate

A

CN I- Olfactory nerve

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9
Q

What structure passes through the optic foramen

A

CN II- Optic nerve

Ophthalmic artery

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10
Q

What structure passes through the Superior orbital fissure

A

CN III, VI, IV, V1 and sympathetic fibres

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11
Q

What structures pass through Foramen Rotundum

A

CN V2 Maxillary branch

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12
Q

What structure passes through Foramen Ovale

A

CN V3- Mandibular branch and accessory meningeal artery

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13
Q

What structures pass through the Foramen Spinosum

A

Middle meningeal artery, vein and Meningeal branch of the CN V3

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14
Q

What structures pass through the Foramen Lacerum

A

ICA, sympathetic and venous plexus

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15
Q

What Structures pass through the Carotid canal

A

ICA and Carotid plexus

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16
Q

What structures pass through the internal acoustic foramen

A

CN VII and CN VIII

Labyrinthe arteries

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17
Q

What structures pass through the jugular foramen

A

CN X, IX, XI

Vagus, Glossopharyngeal and Accessory

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18
Q

What structures pass through hypoglossal foramen

A

CN XII- Hypoglossal nerve

19
Q

What structure passes through the Forman magnum

A

Medulla and Meninges
Ventral arteries
Dural veins
Anterior and posterior spinal arteries

20
Q

What groove begins just lateral to the foramen spinosum

A

Cavernous sinus

21
Q

What artery and its branches make the groove for the cavernous sinus

A

Meningeal artery

22
Q

What are the grooves for the intracranial venous sinus called

A

Transverse sinus

23
Q

Into which foramen does the groove for the sigmoid sinus lead

A

Jugular foramen

24
Q

Which major vein emerges into the neck from the jugular foramen

A

Internal jugular vein

25
Q

In the body of which cranial bone is the sella turcica found

A

Middle fossa- sphenoid bone

26
Q

Which foramen lies immediately anterior to the groove for the cavernous sinus

A

Superior Orbital Fissure

27
Q

Name the features on the base of the skull

A 
medial pterygoid plate
Lateral pterygoid plate
Pterygoing Hamulus
Palatine process
Horizontal plate of palatine
Posterior nasal spine
Temporal bone
Occipital bone
28
Q

Which bone is the pterygoid plates and the pterygoin hamulus part of

A

Sphenoid bone

29
Q

What muscle attaches to the lateral and medial pterygoing plates

A

Medial pterygoid muscle

Lateral pterygoid muscle

30
Q

What are the advantages for a neonate of having a comparatively flexible skull during childbirth

A

Ease of passage through birth canal

31
Q

What are the advantages for a neonate of having a comparatively flexible skull during infancy

A

Allows brain to grow

32
Q

What are the advantages for a neonate of having a comparatively flexible skull during an event of accidents and falls

A

Sutures are flexible and protects brain from minor impacts

33
Q

What type of ossification do flat bones of the vault of the skull undergo

A

Intramembranous ossification

34
Q

What type of ossification do irregular bones of base the skull undergo

A

Endochondral ossification

35
Q

Describe the differences seen in Fontanelles, Dentition, Tympanic membrane, Styloid and mastoid process of temporal bone

A

Fontelles- unfused in foetal skulls
Dentition- less teeth
Tympanic membrane- in adult more deeper
Styloid and mastoid process of temporal bone- not fully developed due to mechanical forces of styloimastoid muscle

36
Q

At what age do the anterior Fontanelles fuse

A

1.5 years

37
Q

At what age do the posterior Fontanelles fuse

A

2-3 months

38
Q

What type of epithelium lines the dorsal surface of the tongue

A

Non-keratinising stratified squamous epithelium

39
Q

What type of muscle fibres underlies the epithelium of the tongue

A

Striated muscle (skeletal)

40
Q

What is the function of the my-epithelial cell

A

Around the acini contract to help with secretions

41
Q

What type of acini is predominant in the parotid gland

A

Serous- secrete proteins in an isotonic watery fluid

42
Q

What type of acini is predominant in the submandibular gland

A

Mixed- serous and mucous

43
Q

What type of acini is predominant sublingual;

A

Mucous

Mucin- lubricant

Anatomy Head and Neck (6 decks)

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