Anatomy B5 W4

Question 1

Cingulate

Answer 1

Area above the corpus callosum- component of the limbic system for processing emotions and regulating behaviour

Question 2

Cingulate sulcus

Answer 2

Sulci above the cingulate

Question 3

Insula

Answer 3

Fissure which is deep in the lateral sulcus that separates the frontal, parietal and temporal lobes. Responsible for pain processing, addiction and self-awareness

Question 4

Brain operculum

Answer 4

Covering flap within the inferior frontal gyrus. It contains the insula of the temporal lobe

Question 5

Falx cerebri

Answer 5

Invagination of the dura mater into the longitudinal fissure between the cerebral hemispheres

Question 6

Falx cerebelli

Answer 6

Invagination/fold of the dura mater between the two cerebellar hemispheres

Question 7

Tentorium cerebelli

Answer 7

Dural reflection which separates the occipital and temporal cerebral hemisphere from the cerebellum

Question 8

Tentorial notch

Answer 8

Free edge for passage of the brainstem near the tentorium cerebelli

Question 9

Cavernous sinus

Answer 9

Venous plexus located behind the eye socket, near the multiple veins. Contains the internal carotid artery, opthalamic nerve, abducens nerve and trochlear nerve. Blood clot can form here and lead to infection spreading due to infection in the facial or skull region.

Question 10

Venous drainage

Answer 10

All veins drain into the sigmoid vein which drains straight into the internal jugular vein

Question 11

Inferior petrosal sinus

Answer 11

Venous channel which empties blood from cavernous sinus, the midbrain, cerebellum and inner ear into the sigmoid sinus -> internal jugular vein

Question 12

Cavernous sinus

Answer 12

Hollow space behind the eye socket to drain blood. Blood clot can develop following facial or skull infection here

Question 13

Between which layers is the venous sinuses located?

Answer 13

Between the endosteal and meningeal layers of the dura mater

Question 14

Where is CSF drained into?

Answer 14

Venous sinuses

Question 15

Where does Internal jugular vein return blood to?

Answer 15

Right brachiocephalic vein to the right side of the heart

Question 16

Where does the sagittal sinus connect with other sinuses?

Answer 16

Via the confluence of sinuses, such as the transverse, superior and inferior petrosal sinuses

Question 17

What is the falx cerebelli?

Answer 17

Fold of the dura mater which partially separates the cerebral hemispheres posteriorly

Question 18

Foramen rotundum

Answer 18

Opening in the greater wing of the sphenoid bone which allows the maxillary nerve and trigeminal nerve to pass through

Question 19

Foramen ovale

Answer 19

Transmits the mandibular nerve, trigeminal nerve and accessory meningeal artery

Question 20

Optic canal

Answer 20

Foramen in the sphenoid bone which transmits the optic nerve and ophthalmic nerve

Question 21

Jugular foramen

Answer 21

Opening in the temporal bone which transmits the internal jugular vein, vagus nerve,
glossopharyngeal nerve and spinal accessory nerve

Question 22

Carotid canal

Answer 22

Opening in themporal bone superior to the jugular foramen which transmits the internal carotid artery, internal carotid venous plexus and sympathetic nerve plexus

Question 23

Hypoglossal canal

Answer 23

Above the occipital condyle and transmits the hypoglossal nerve

Question 24

Sella turcica

Answer 24

Depression of the sphenoid bone which contains the pituitary gland.

Question 25

Boundaries of the sella turcica

Answer 25

Tuberculum sella, hypophysial fossa and dorsum sellae

Question 26

Dorsum sellae

Answer 26

Bound to the sella turcica posteriorly

Question 27

Hypophysial fossa

Answer 27

Centre of the sella turcica

Question 28

Tuberculum sellae

Answer 28

Anterior portion of the sella turcica

Question 29

What forms the roof of the infratemporal fossa?

Answer 29

Maxilla

Question 30

What forms the sides of the infratemporal fossa?

Answer 30

Mandibular ramus and lateral pterygoid pate of the sphenoid bone

Question 31

What forms the floor of the infratemporal fossa?

Answer 31

Mastoid process to styloid process

Question 32

Foramen spinosum

Answer 32

Middle meningeal artery and meningeal branch of mandibular nerve

Question 33

Anterior cerebral artery

Answer 33

Branch of this moves around the corpus allosum, called the pericallosal artery. Pericallosal artery gives a branch called the medial striate artery of Heubner.

Question 34

Posterior cerebral artery

Answer 34

Supplies blood to splenium of the corpus callosum

Question 34

Posterior cerebral artery

Answer 34

Supplies blood to splenium of the corpus callosum

Question 34

Posterior cerebral artery

Answer 34

Supplies blood to splenium of the corpus callosum

Question 35

Posterior cerebral artery

Answer 35

Supplies blood to splenium of the corpus callosum