CNS Organization II Flashcards
Diencephalon: What part contains the Pineal gland?
Epithalamus
Diencephalon: What does the Pineal glad secrete?
Melatonin (Note: in response to darkness)
Diencephalon: Hypothalamus controls what? (3)
- Body Temperature
- Hunger and Thirst
- Fatigue and Sleep
Diencephalon: What three signals does the Thalamus receive?
- Visual (LGN)
- Auditory (MGN)
- Sensory (VPL/VPM)
List three subdivisions of the brain stem from rostral to caudal.
^ Rostral
1. Midbrain
2. Pons
3. Medulla
v Caudual
What supplies the brain stem with blood?
Vertebral Arteries
Two arteries that Vertebral Arteries give rise to.
- Posterior Inferior Cerebellar Artery (PICA)
- Basilar Artery
Basilar Artery gives rise to what three arteries?
- Anterior Inferior Cerebellar Artery
- Superior Cerebellar Artery
- Posterior Cerebral Artery
(Note: there is 2 of each)
While the other two of Basilar Arteries give rise to blood supply to the pons, which of the three supplies the midbrain?
Posterior Cerebral Artery
The 5 regions of the spine from top to bottom
^ Rostral
1. Cervical
2. Thoracic
3. Lumbar
4. Sacral
5. Coccyx
v Caudual
Within spinal cord anatomy, we can see two enlargements of neuronal density. Where and why?
- Cervical - Innervates the upper limb muscles
- Lumbar- Innervates the lower limb muscles
What is the name of the tapered, cone-shaped end of the spinal cord, located near the first or second lumbar vertebrae in the lower back?
Conus Medullaris
Name of the collection of lumbar and sacral spinal roots in the lumbar cistern below L2?
Cauda Equina
In the spinal cord, what makes up the larger anterior wings of the butterfly? (Grey matter)
Ventral Horn
What is the location of cell bodies of sensory neurons in the spinal cord grey matter?
Dorsal Horns
