Dural Sinuses

Question 1

At the point of crossing

Answer 1

Trochlear Nerve

Question 2

In font of the crossing point

Answer 2

Oculomotor Nerve

Question 3

Anterior clinoid process

Answer 3

Free margin

Question 4

Posterior clinoid process

Answer 4

Attached margin

Question 5

Occipital sinus

Answer 5

Falx cerebelli

Question 6

Attached to the anterior and posterior clinoid processes

Answer 6

Diaphragma sellae

Question 7

Attached to the internal occipital crest and inferior surface of tentorium cerebelli

Answer 7

Falx cerebelli

Question 8

It ends by passing through the posterior compartment of the jugular foramen to continue as the internal jugular vein.

Answer 8

Sigmoid sinus

Question 9

The right sinus is usually bigger than the left, because?

Answer 9

it is usually the continuation of the superior sagittal sinus.

Question 10

It may open into a dilatation called confluence of sinuses at the internal occipital protuberance.

Answer 10

Superior sagittal sinus

Question 11

They form with the cavernous sinuses a venous circle (circular sinus) around the hypophysis cerebri.

Answer 11

Intercavernous sinuses

Question 12

It is the smallest of the cranial sinuses.

Answer 12

Occipital sinus

Question 13

It is situated in the attached margin of the falx cerebelli.

Answer 13

Occipital sinus

Question 14

• It is usually single, but occasionally there are two, right and left sinuses. They arise from the right and left transverse sinuses. They fuse together to form a single sinus which ends into the sigmoid sinus in each side. It communicates around the margin of the foramen magnum by several small meningeal veins.

Answer 14

Occipital sinus

Question 15

Occipital artery

Answer 15

External carotid artery

Question 16

Supratrochlear and supraorbital

Answer 16

Internal carotid artery

Question 17

Superifical temporal

Answer 17

External carotid artery

Question 18

Posterior auricular

Answer 18

External carotid artery

Question 19

Angular artery

Answer 19

Facial artery

Question 20

It has a lower border which is concave and free

Answer 20

Falx cerebri

Question 21

It forms the tentorial notch around the midbrain

Answer 21

Free margin of tentorium cerebelli

Question 22

It runs along the posterior half or two thirds of the free margin of falx cerebri

Answer 22

Inferior sagittal sinus

Question 23

SS is formed by?

Answer 23

The union of ISS and great cerebral vein

Question 24

Uncus of temporal bone and trigeminal ganglion

Answer 24

Lateral relation of cavernous sinus

Question 25

Sphenoidal air sinus

Answer 25

Medial boundary of cavernous sinus

Question 26

Speration of the scalp from the skull occurs at which layer

Answer 26

4th

Question 27

A layer in the scalp that bleeds profusely of injured?

Answer 27

Second layer

Question 28

Bleeding in this layer may reach eyelids and cause black eyes

Answer 28

4th layer

Question 29

Facial artery terminates as

Answer 29

Angular artery

Question 30

Dangerous position of external jugular vein

Answer 30

1 inch above the clavicle where it pierces the deep fascia of the roof of the posterior triangle

Question 31

Opthalmic nerve

Answer 31

Supraorbital supratrochlear lacrimal infra trochlear external nasal

Question 32

Maxillary

Answer 32

Infraorbital, zygomaticotemporal, zygomaticofacial

Question 33

Mandibular sensory branches

Answer 33

Meningeal Buccal Auriculotemporal Lingual Mental

Question 34

Cavernous sinus comminicates with With the facial vein through

Answer 34

through the superior ophthalmic vein.

Question 35

Cavernous sinus communicates With the pterygoid and pharyngeal plexus of veins through emissary veins passing through

Answer 35

foramen ovale or foramen lacerum.

Question 36

Cavernous sinus drains to transverse sinus and internal jugular vein through

Answer 36

1. Through the superior petrosal sinus to end in the transverse sinus. 2. Through the inferior petrosal sinus to end in the internal jugular vein

Question 37

Infection of cavernous sinus is transmiited to the brain through

Answer 37

middle cerebral vein.

Question 38

Infection of cavernous sinus causes exopthalmos through

Answer 38

Internal carotid artery

Question 39

Sphenoparietal

Answer 39

Paired venous sinuses Tributaries of cavernous sinus

Question 40

Greater auricular nerve is related to the auricle

Answer 40

Posterior

Question 41

auriculotemporal nerve is related to the auricle

Answer 41

Anteriorly

Question 42

Nerves posterior to the auricle are supplied by

Answer 42

Cervical spinal nerves

Question 43

Sternomastoid (sternocleidomastoid) muscle

Answer 43

spinal accessory nerve (XI), with sensory supply from C2 & C3 (for proprioception).

Question 44

Omohyoid muscle

Answer 44

ansa cervicalis.

Question 45

Transverse cervical nerve is from which category of the nerves in the posterior triangle

Answer 45

Cutanous branches of the cervical plexus

Question 46

Which auricular nerve is present in the posterior triangle, is it in front of the ear or posterior to it

Answer 46

Great auricular, posterior

Question 47

Which belly of omohyoid is in the posterior triangle

Answer 47

Inferior belly

Question 48

Which lymph nodes are present in posterior triangle

Answer 48

Occipital and supraclavicular lymph nodes

Question 49

Which s is the first s in the posterior triangle

Answer 49

Scalenus medius

Question 50

Superomedial boundary

Answer 50

rectus capitis posterior major.

Question 51

Superolateral boundary of suboccipital triangle

Answer 51

superior oblique of head (= obliquus capitis superior).

Question 52

Which part of nerve 11 is present in posterior triangle

Answer 52

Spinal

Question 53

Floor of suboccipital triangle

Answer 53

posterior atlanto-occipital membrane and posterior arch of atlas

Question 54

semispinalis capitis & splenius capitis.

Answer 54

-Floor of the posterior triangle -roof of suboccipital triangle

Question 55

Infrahyoid muscles supply

Answer 55

All infrahyoid muscles are supplied by ansa cervicalis (Cl, C2&C3) except thyrohyoid muscle (supplied by Cl only).

Question 56

Anterior facial vein is present in which triangle

Answer 56

Digastric

Question 57

Nerve to mylohyoid

Answer 57

Submental triangle Digastric triangle