Dsf - 1-25-12 - Anatomy - Skull, Scalp, Meninges, And Csf

Front 1

Back 1

Front 2

Which fossa is this, what is contained here, and what forms its borders??

Back 2

Anterior cranial fossa

Houses the frontal lobes

Anterior border is formed by the cribriform plate from the ethmoid bone
- Crista galli dividing it in half

Posterior border is formed by the lesser wings of the sphenoid bone

Front 3

What fossa is this, what is contained here, and what forms its borders?

Back 3

Middle cranial fossa

Houses the temporal lobes

Formed by the body of the sphenoid
- Cella turcica
- Central air sinus
- Clinoid processes

Lateral borders:
- Anterior: lesser wing of sphenoid
- Posterior: superior edge of petrous bone
- Lateral: squamous part of temporal bone

Floor:
- Greater wing of sphenoid
- Anterior surface of petrous bone

Front 4

What is this fossa, what is contained in it, and what forms its borders?

Back 4

Posterior cranial fossa

Anterior border:
- Superior petrous and temporal

Floor:
- Posterior petrous, squamous, and basal occipital

Contains foramen magnum

Front 5

Back 5

Front 6

What goes through the cribriform plate?

Back 6

CN I (olfactory)

Front 7

What goes through the optic canal?

Back 7

CN II (optic)

Front 8

What goes through the foramen rotundum?

Back 8

V2 (maxillary) of CN V (trigeminal)

Front 9

What goes through the foramen ovale?

Back 9

V3 (mandibular) of CN V (trigemial)

Front 10

What goes through the foramen spinosum?

Back 10

Middle meningeal artery

Front 11

What goes through the carotid canal?

Back 11

Internal carotid artery

Front 12

What goes through the foramen lacerum?

Back 12

Internal carotid artery (from carotid canal)

Front 13

What goes through the internal acoustic meatus?

Back 13

CN VII (facial)

CN VIII (vestibulocochlear)

Front 14

What goes through the jugular foramen?

Back 14

CN IX (glossopharyngeal)

CN X (vagus)

CN XI (spinal accessory)

Front 15

What goes through the hypoglossal canal?

Back 15

CN XII (hypoglossal)

Front 16

What goes through the foramen magnum?

Back 16

Spinal cord

Front 17

What are the four paranasal sinuses?

Back 17

Frontal

Ethmoid

Sphenoid

Maxillary

Front 18

Where are the frontal sinuses found and what are their drainage patterns?

Back 18

Found between outer and inner tables of the frontal bone

Drainage:
- Frontonasal duct
- Middle nasal meatus

Front 19

Where are the ethmoid sinuses found and what are their drainage patterns?

Back 19

Found between the orbit and nasal cavity

Drainage:
- Anterior and middle groups through the middle nasal meatus
- Posterior group through the superior nasal meatus

Front 20

Where are the sphenoid sinuses found and what are their drainage patterns?

Back 20

Found in the body of the sphenoid bone

Drainage:
- Sphenoethmoidal recess
- Superior nasal meatus

Front 21

Where are the maxillary sinuses found and what are their drainage patterns?

Back 21

Found above the maxilla and palate

Drainage:
- Middle nasal meatus

Front 22

What are the layers of the scalp?

Back 22

Skin

Connective tissue

Aponeurosis
- Between frontalis and occipitalis muscles

Loose connective tissue

Pericranium

Front 23

What supplies arterial blood to the anterior and superior aspects of the scalp?

Back 23

Branches from the ophthalmic artery
- Supratrochlear
- Supraorbital

Front 24

What supplies arterial blood to the scalp, not including the anterior and superior aspects?

Back 24

Branches from the external carotid
- Superficial temporal
- Posterior auricular
- Occipital

Front 25

What are the layers of the head from outermost to innermost?

Back 25

Scalp

Skull

Extra/epidural space

Dura mater (2 layers)

Subdural space

Arachnoid mater

Subarachnoid space

Pia mater

Front 26

What are the layers of the dura mater?

Back 26

Outer periosteal layer

Inner meingeal layer

Front 27

What are the dural partitions?

Back 27

Falx cerebri

Falx cerebelli

Tentorium cerebelli

Diaphragma sellae
- Above pituitary

Front 28

Back 28

Front 29

What is found in the cavernous sinuses?

Back 29

Internal carotid artery

CN III (oculomoter)

CN IV (trochlear)

V1 (ophthalmic) of CN V (trigeminal)

V2 (maxillary) of CN V (trigeminal)

CN VI (abducens)

Front 30

What supplies the dura mater with arterial blood in these areas:
- Anterior cranial fossa
- Middle cranial fossa
- Posterior cranial fossa

Back 30

Meningeal arteries in the outer periosteal layer

Anterior cranial fossa:
- Anterior meningeal artery (ethmoidal arteries)

Middle cranial fossa
- Middle meningeal artery (maxillary artery)
- Accessory meningeal artery (maxillary artery)

Posterior cranial fossa
- Posterior meningeal artery (ascending pharyngeal artery)
- Other meningeal branches from the ascending pharyngeal artery, occipital artery, and vertebral artery

Front 31

What innervates the dura mater?

Back 31

Small meningeal branches of:
- V1 (ophthalmic) of CN V (trigeminal)
- V2 (maxillary) of CN V (trigeminal)
- V3 (mandibular) of CN V (trigeminal)
- CN X (vagus)
- Spinal nerves C1, C2, C3

Front 32

Through what does CSF flow in the subarachnoid space?

Back 32

Cisterns

Front 33

What are the four major subarachnoid cisterna?

Back 33

Anterior

Posterior

Lateral

Lumbar

Front 34

Back 34

Front 35

Back 35

Front 36

What produces CSF and where is this found?

Back 36

Choroid plexus

Found in the superior parts of all ventricles except for the cerebral aqueduct

Front 37

What are the ventricles found in the brain?

Back 37

Lateral (2)

Third

Fourth

Front 38

What is the path of CSF flow through the ventricles?

Back 38

1. Begins in the lateral ventricles

2. Flows through the interventricular foramen of monro to the third ventricle

3. Flows down the cerebral aqueduct to the fourth ventricle