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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

A

Asterion

25
Q

____ passes through infra orbital foramen

A

Infra orbital nerves and vessels

26
Q

___ and ____ passes through mastoid foramen

A

▶Emissary vein - sigmoid sinus with post. Auricular vein

▶Meningeal branch of occipital artery

27
Q

Structures passing through the lateral, middle and medial part of superior orbital fissure

A

🔰 Lateral part

  1. Lacrimal nerve
  2. Frontal nerve
  3. Trochlear nerve
  4. Lacrimal and middle meningeal artery

🔰Middle part

  1. Occulomoter nerve
  2. Nasociliary nerve
  3. Abducent nerve

🔰Medial part

  1. Inferior opthalmic vein
  2. Sympathetic plexus around int. Carotid artery
28
Q

Structures passing through jugular foramen

A

🔰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

  1. Internal Jugular Vein
  2. Meningeal branch of occipital artery
29
Q

Layers of scalp:

A 
S - Skin
C- Connective tissue / Superficial fascia
A- Aponeurosis / Deep fascia
L- Loose areolar tissue
P- Pericranium
30
Q

Layers of scalp:

A 
S - Skin
C- Connective tissue / Superficial fascia
A- Aponeurosis / Deep fascia
L- Loose areolar tissue
P- Pericranium
31
Q

Commonest site of occurence of sebaceous cysts

A

Scalp

32
Q

Pneumatic bones of the skull are

A 
▶Maxilla
▶Ethmoid
▶Sphenoid
▶Frontal
▶mastoid process of Temporal bone
33
Q

Metotopic suture closes at

A

9 months

34
Q

Thinnest bone is a part of:

A

Ethmoid

35
Q

Medial palatine suture joins

A

Left and right palatine bone

36
Q

Transverse palatine bone joins

A

Maxilla and palatine bone

37
Q

Most prominent part on external occipital protuberance

A

Inion

38
Q

Squamosal suture joins

A

Parietal and temporal bones

39
Q

Fracture of the of the petrous portion of the temporal bone may cause :

A

blood or cerebrospinal fluid (CSF) to escape from the
ear,
hearing loss,
and facial nerve damage

40
Q

Structures passing through superior orbital fissure

A

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
Q

Structures passing through Jugular foramen

A

(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
Q

Structures passing through Mastoid foramen

A

Branch of occipital artery to dura mater and mastoid emissary vein

43
Q

Foramina in the base of the skul and their structures oassing through:

A

🔰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
Q

Foramina in the Front of the Skull and

Foramen Contents

A

🔰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
Q

Duramater is supplied by all cranial neeves except:

A

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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