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HUMAN ANATOMY (NEET MDS) > OSTEOLOGY > Flashcards

OSTEOLOGY Flashcards

1
Q
  1. Skull at birth contains ______ separated bones

2. Skull of adult contains ______ bones

A
  1. 45

2. 28

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2
Q

Coronal suture is present between _____

A

Frontal bone and two parietal bones

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3
Q

_________ suture is present between two parietal lobes

A

Sagittal

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4
Q

Lambdoid suture is present between______

A

Occipital and two parietal bones

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5
Q

__________ suture separates two halves of frontal bone and is present in only 3-8% individuals

A

Metopic suture

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6
Q

_________ , the brain case consists of 8 bones

A

Calvaria

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7
Q

_________ and __________ are the paired bones of Neurocranium

A

Parietal

Temporal

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8
Q

Unpaired bones of neurocranium are?

A

Frontal
Occipital
Sphenoid
Ethmoid

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9
Q

Viscerocranium consists of _____ paired and _____ unpaired bones
Name the bones

A

6 Paired:
Maxilla, Zygomatic, Nasal, Lacrimal, Palatine, Inferior Nasal concha
2 unpaired:
Mandible, Vomer

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10
Q

Highest point on sagittal suture?

A

Vertex

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11
Q

Meeting point between coronal and sagittal sutures?

A

Bregma

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12
Q

Meeting point between sagittal and lambdoid sutures

A

Lambda

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13
Q

Point on sagittal suture between two parietal foramen?

A

Obelion

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14
Q

Area in the temporal fossa where frontal, parietal , temporal and sphenoid bones join to form a H- shaped suture

A

Pterion

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15
Q

Deep into the prerion lies ________

Hint:3 structures

A

▶Anterior branch of middle meningeal artery
▶Middle meningeal vein
▶Lateral sulcus of cerebral hemisphere

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16
Q

_____________ fossa is commonly fractured in injuries

A

Middle cranial fossa

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17
Q

Largest and deepest of the cranial fossae is _______ fossa

A

Posterior cranial fossa

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18
Q

Structures passing through foramen ovale?

A 
▶Mandibular nerve
▶Accessory meningeal artery
▶Lesser petrosal neeve
▶Emissary vein connecting cavernous sinus with pterygoid venous plexus
( mnemonic: MALE)
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19
Q

__________ Passes through foramen Rotundum

A

Maxillary nerve

20
Q

Structures passing through foramen scarpa____ and ______

A

▶Terminal parts of greater palatine vessels
▶Terminal part of nasopalatine nerve

(Incisive foramen is a.k.a Foramen Scarpa)

21
Q

Structures passing through foramen spinosum are _____, ______ and ______

A

▶Middle meningeal artery
▶Nervus Spinosus(meningeal branch of mandibular nerve)
▶Posterior trunk of middle meningeal nerve

22
Q

Structures passing through the 3 parts of foramen magnum-

A

▶Anterior part:

  1. Apical ligament of dens
  2. Membrana tectoria

▶Subarachnoid space:

  1. Spinal accessory nerve
  2. Vertebral arteries

▶Posterior part:

  1. Lower part of medula
  2. Tonsils of cerebellum
  3. Meninges
23
Q

Bones seen in norma verticalis are :

A
  1. Upper part of frontal bone anteriorly
  2. uppermost part of occipital bone posteriorly
  3. A parietal bone on each side
24
Q

Meeting point of pariemastoid, occipitomastpid and lambdoid sutures

25
____ passes through infra orbital foramen
Infra orbital nerves and vessels
26
___ and ____ passes through mastoid foramen
▶Emissary vein - sigmoid sinus with post. Auricular vein | ▶Meningeal branch of occipital artery
27
Structures passing through the lateral, middle and medial part of superior orbital fissure
🔰 Lateral part 1. Lacrimal nerve 2. Frontal nerve 3. Trochlear nerve 4. Lacrimal and middle meningeal artery 🔰Middle part 5. Occulomoter nerve 6. Nasociliary nerve 7. Abducent nerve 🔰Medial part 8. Inferior opthalmic vein 9. Sympathetic plexus around int. Carotid artery
28
Structures passing through jugular foramen
🔰Anterior part 1. Inferior petrosal sinus 2. Meningeal branch of ascending pharyngeal artery 3. Sigmoid sinus 🔰Middle part 4. 9th, 10th and 11th nerve 🔰Posterior part 5. Internal Jugular Vein 6. Meningeal branch of occipital artery
29
Layers of scalp:
``` S - Skin C- Connective tissue / Superficial fascia A- Aponeurosis / Deep fascia L- Loose areolar tissue P- Pericranium ```
30
Layers of scalp:
``` S - Skin C- Connective tissue / Superficial fascia A- Aponeurosis / Deep fascia L- Loose areolar tissue P- Pericranium ```
31
Commonest site of occurence of sebaceous cysts
Scalp
32
Pneumatic bones of the skull are
``` ▶Maxilla ▶Ethmoid ▶Sphenoid ▶Frontal ▶mastoid process of Temporal bone ```
33
Metotopic suture closes at
9 months
34
Thinnest bone is a part of:
Ethmoid
35
Medial palatine suture joins
Left and right palatine bone
36
Transverse palatine bone joins
Maxilla and palatine bone
37
Most prominent part on external occipital protuberance
Inion
38
Squamosal suture joins
Parietal and temporal bones
39
Fracture of the of the petrous portion of the temporal bone may cause :
blood or cerebrospinal fluid (CSF) to escape from the ear, hearing loss, and facial nerve damage
40
Structures passing through superior orbital fissure
Superior orbital fissure (through CTRZ*): Oculomotor nerve (superior and inferior division), abducent nerves and nasociliary nerve (branch of ophthalmic division of trigeminal nerve) Superior orbital fissure (left outside the ring) LFT* nerves: Lacrimal and frontal nerves (branches of ophthalmic division of trigeminal nerve), trochlear nerve and ophthalmic (superior and inferior) veins
41
Structures passing through Jugular foramen
(anterior part) Inferior petrosal sinus (middle part) Cranial nerves 9, 10, 11 (cranial and spinal) (posterior part) Junction of sigmoid sinus and internal jugular vein Meningeal branch of occipital artery
42
Structures passing through Mastoid foramen
Branch of occipital artery to dura mater and mastoid emissary vein
43
Foramina in the base of the skul and their structures oassing through:
🔰Petrotympanic fissure ▶Chorda tympani and often anterior tympanic artery 🔰Stylomastoid foramen▶ Facial nerve 🔰Incisive canal ▶Nasopalatine nerve and terminal part of the sphenopalatine or greater palatine vessels 🔰Greater palatine foramen▶ Greater palatine nerve and vessels 🔰Lesser palatine foramen ▶Lesser palatine nerve and vessels 🔰Palatine canal▶ Descending palatine vessels and the greater and lesser palatine nerves 🔰Pterygoid canal▶ Runs from the anterior wall of the foramen lacerum to the pterygopalatine fossa and transmits the nerve of the pterygoid canal (vidian nerve) 🔰Sphenopalatine foramen▶ Sphenopalatine vessels and nasopalatine nerve
44
Foramina in the Front of the Skull and | Foramen Contents
🔰Zygomaticofacial foramen▶Zygomaticofacial nerve 🔰Supraorbital notch or foramen▶Supraorbital nerve and vessels 🔰Infraorbital foramen▶ Infraorbital nerve and vessels 🔰Mental foramen▶ Mental nerve and vessels
45
Duramater is supplied by all cranial neeves except:
Cranial nerve 4 (trochlear) do not supply dura mater. | • It is a pure motor nerve which supply the skeletal muscle superior oblique in the eyeball.

HUMAN ANATOMY (NEET MDS) (1 decks)

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