The Brain Flashcards
Where the brainstem attaches to, deep inside cerebral hemispheres
Diencephalon
What are the 3 parts of the brainstem?
Midbrain, pons, and medulla oblongata
At the 4th week of development, what are the name of the 3 vesicles?
Prosencephalon, mesencephalon, and rhombencephalon
At the 5th week of development, what are the new names of the vesicles?
-prosencephalon gives to telencephalon and diencephalon
-mesencephalon retains the name mesencephalon
-rhombencephalon gives rise to metencephalon and mylencephalon
What separates the right and left parts of the cerebrum?
Longitudinal fissure
What’s the function of the cerebrum?
-location of conscious thought and complex intellectual function
-house the centers of reasoning as well as memories
What two things increase surface area on the cerebrum?
Gyri (hills) and sulci (valleys)
What two structures protect the brain and spinal cord?
Bone and meninges
-type of meninge
-a thin layer of connective tissue that adheres to the brain
-deepest
Pia mater
-type of meninge
-superficial to pia mater
-thin layer between pia mater and dura mater
Arachnoid mater
-type of meninge
-composed of 2 layers (periosteal and meningeal)
-connects to the skull
Dura mater
-formed by meningeal layer of dura mater
-runs between left and right cerebral hemispheres
-protects brain from excessive side movement
Falx cerebri
What do the dural venous sinuses do?
-helps drain blood and deliver it to internal jugular veins
-type of sinus
-located in superior edge of falx cerebri
-collects blood from brain and empties it into the confluence of sinuses
Superior sagittal sinus
-type of sinus
-located in posterior of skull
-receives blood from superior sagittal and straight sinuses
Confluence of sinuses
C-shaped ventricle within the cerebral hemispheres
Lateral ventricle
Slit-like ventricle between left and right diencephalon
3rd ventricle
Diamond shaped-ventricle between brainstem and cerebellum
4th ventricle
Connection between lateral ventricles and 3rd ventricle
Interventricular foramina
Connection (through midbrain) between 3rd and 4th ventricle
Mesencephalic aqueduct
Narrow canal through center of spinal cord
Central canal
Openings in 4th ventricle that allow CSF to flow into subarachnoid space
Apertures