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Anatomy > For Cranial Quix > Flashcards

For Cranial Quix Flashcards

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1
Q

Calvaría

A

Skullcap

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2
Q

Each level of cranial cavity forms

A

Cranial fossa

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3
Q

Anterior cranial fossa cont

A

Frontal lobes of the brain

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4
Q

Floor of cranial fossa formed by

A

Ethmoid bone
Frontal bone
Lesser wings of the sphenoid bone

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5
Q

Parts of ethmoid bone

A

Cribriform plate- horizontal plate of bone covered with small holes
Crista galli- vertical plate of bone in the median plane to which the fall cerebri is attached

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6
Q

Floor of the anterior cranial fossa forms

A

The roof of each orbit

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7
Q

Middle cranial fossa

A

Cont the anterior aspects of the temporal lobes of the brain
Extends over the edge of the lesser wings of the sphenoid bone

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8
Q

Floor of middle cranial fossa

A

Greater wings of the sphenoid bone
Petrous part of the temporal bone
FORMS the room of each middle and inner EAR chamber

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9
Q

Openings of the middle cranial fossa

A

2 each
Lesser wing- OPTIC CANAL
Superior orbital fissure - between greater and lesser wings
Greater wing of the sphenoid
- foramen rotundum
Foramen ovale
Foramen spinosum
Foramen lacerum

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10
Q

Why is the greater wing kinda weak

A

The numerous foramina weaken the sphenoid bone, particularly the greater wing, and I thought to explain the occurrence of fractures in this region

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11
Q

Sella turcica

A

Deep notch that holds the pituitary gland, or hypophysis

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12
Q

Sphenoid sinus

A

Lies just below the sella turcica and is hidden from view in an intact skull. Surgeons often approach tumors of the pituitary gland by approaching the sinus via the nasal cavity.

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13
Q

Posterior cranial fossa

A

Cont cerebellum, pons, medulla oblongata
Floor formed by petrous part of the temporal bone and occipital
Openings:
2 internal acoustic meatus
Jugular foramen
Hypoglossal canal
1 foramen magnum .

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14
Q

What passes thru anterior cranial fossa

A

Sieve-like structure of the cribriform plate of the ethmoid bone allows the many OLFACTORY CN1

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15
Q

Optic canal transmits

A

Optic nerve (CN2)
Ophthalmic artery

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16
Q

Superior orbital fissure trans

A

Oculomotor CN 3
Trochlear CN4
Ophthalmic division V1
Abducens CN 6

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17
Q

Foramen rotundum

A

Maxillary V2

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18
Q

Foramen ovale

A

Mandíbular V3

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19
Q

Foramen spinosum

A

Middle meningeal artery (branch of maxillary artery)

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20
Q

Foramen lacerum

A

NOTHING PASSES

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21
Q

Internal acoustic meatus trans

A

Facial nerve CN 7
Vestibularcochlear nerve CN8

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22
Q

Jugular foramen

A

Glossopharyngeal n CN 9
Vagus CN10
Accessory 11
Internal jugular VEIN

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23
Q

Hypoglossal canal

A

Hypoglossal nerve CN 12

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24
Q

Foramen magnum

A

Spinal cord
Spinal part of the ACCESSORY CN 11 ENTERS the cranial cavity
Vertebral arteries
Spinal arteries

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25
Longitudinal cerebral fissure
Divides cerebrum into R and L cerebral hemispheres
26
Corpus callosum
Large system of nerve fibers (axons) that connect the R + L cerebral hemispheres Otherwise the R doesnt know what the left is doing
27
Lateral sulcus
Separates temporal lobe from parental loable and frontal lobe of cerebrum Auditory cortex lies in the depths of the lateral sulcus
28
Precentral gyrus
Primary motor cortex
29
Post central gyrus
Primary sensory cortex
30
Upper motor neurons of pre and post central gyri send
Axons to the spinal cord to synapse with the lower motors neurons locates in the anterior horn of the spinal cord If UPPER motor neuron is lost, conscious control pf movement (skilled) is lost
31
Occipital lobe cont
Visual part of cerebral cortex
32
Subclavian arteries give rise to
Vertebral arteries in the root of the neck
33
What opening do vertebral arteries travel
Transverse foramina Foramen magnum
34
Where do olfactory n synapse
Located in the nasal, cavity and synapse with the neurons in the olfactory bulb
35
What is the action of the Genioglossus muscle?
Depress and protrude the tongue. Innervated by CN XII.
36
What is the function of the Styloglossus muscle?
Elevate and retract the tongue; makes a trough for swallowing. Innervated by CN XII.
37
What does the Hyoglossus muscle do?
Depress and retract the tongue. Innervated by CN XII.
38
Palatoglossus muscle?
CN X. Elevates the posterior aspect of the tongue.
39
What is the action of the Mylohyoid muscle?
Elevate hyoid bone. Elevate the base of the tongue and floor of the mouth Depress the mandible Innervated by the nerve to the mylohyoid (branch of CN V3).
40
What is the function of the Geniohyoid muscle?
Elevate the hyoid bone and depresses the mandible Innervated by C1 (spinal nerve) via CN XII.
41
Digastric anterior belly
CN V3 Depress the mandible
42
What is the action of the Stylohyoid muscle?
Elevate the hyoid bone. Innervated by CN VII.
43
Digastric posterior belly
CN VII Elevate the hyoid bone
44
Dural venous sinuses
Channels that form within the dura mater and serve to drain all the venous blood AND CSF from the brain
45
What is a confluence of sinuses
Mult sinuses meet and drain into it Superior , straight, occipital drain directly
46
Choroid plexus
CSF is produced
47
2 major bones of septum
Vomer and perpendicular plate of the ethmoid bone
48
Nasolacrimal duct drains into
Inferior meatus
49
What drains into hiatus semilunares of the middle meatus
Frontal, maxillary, and anterior ethmoid sinuses
50
What drains into middle meatus through ethmoid bulla
Middle ethmoid sinuses
51
Posterior ethmoid sinuses drain into
Superior meatus
52
Sphenoid sinus
Drains into sphenoethmoidal recess
53
Choanae
Connect nasal cavity with the upper pharynx
54
Olfactory mucosa
Receptors for sense of smell Nerve fibers (CN1) from the olfactory mucosa pass through the cribiform form plate of the ethmoid bone, and enter the olfactory bulb
55
Oral cavity extends from
The lips to the oropharynx
56
Vestibule of the oral cavity
Space between the teeth and cheek
57
Palatoglossal arch
Boundary between oral cavity and the pharynx
58
Vallate papillae
Cont taste buds Divide tongue into anterior 2//3 and posterior 1/3
59
Anterior 2/3 of tongue
TASTE via chorda tympani (branch CN VII) General sensation : lingual nerve (branch of CN V3)
60
Posterior 1/3 of tongue
Glossopharyngeal nerve (CN IX) for BOTH TASTE AND GENERAL SENSATION
61
Where does the submandibular duct terminate
Sublingual papilla located at inferior limit of lingual frenulum
62
Submandibular gland and chorda tympani
Chorda tympani supplies parasympathetic innervation

Anatomy (9 decks)

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