Brain and Cranial Nerves Flashcards
Label the diagram..
Lable the lobes
Label the diagram..
What is the Meninges?
Meninges = protective coverings for the brain & spinal cord
What are the three layers of membrane meninges from superficial to deep?
•DURA MATER
–innervated (pain) & vascular
–2 layers (periosteal & meningeal)
•ARACHNOID MATER
–arachnoid granulations (reabsorb CSF)
•PIA MATER
–coats brain and the blood vessels/nerves entering/leaving brain
What is the dura layer separating the 2 hemisphere lobes?
falx cerebri
What arterys enter the cranial cavity through the foramen magnum?
vertebral artery
Label all the artieries in the circle of willis
Label all the dural venous sinuses
What veins are seponsible for returning venous blood from brain tissue to sinus?
cerebral veins
What are the Cranial Nerves Modalities (types of nerves)?
-Somatic sensory nerves
- from skin, mucosa, fascia, bone, skeletal muscle
- e.g. mental nerve
-Somatic motor nerve
- to skeletal muscle
- e.g. spinal accessory
-Parasympathetic nerve
- autonomic nervous system (motor) – rest and digest
- e.g. to glands (mucous/lacrimal/salivary)
-Special sensory
- from special sense organs
- e.g. optic nerve
-Mixed
- contains a mix of any of the above
- e.g. CNV – trigeminal (somatic sensory and somatic motor)
-Visceral sensory (afferent)
- from carotid body/sinus, pharynx, larynx, trachea, bronchi, lungs, heart, GI tract
- Glossopharyngeal and Vagus nerves
What cranial nerves are in the Anterior cranial fossa?
CNs I
What cranial nerves are in the middle cranial fossa?
CNs II
CNs III
CNs IV
CNs Va,Vb& Vc
CNs VI
What cranial nerves are found in the posterior cranial fossa?
CNs VII
CNs VIII
CNs IX
CNs X
CNs XI
CNs XII
What is labelled?
Trigeminal Ganglion
