Ventricle Structures
How many ventricles are there in the brain?
There are four ventricles in the brain, two lateral ventricles, the third, and the fourth ventricle. (Ch. 1-2 ppt slides, slide 74)
What is the function of the ventricles?
To circulate cerebrospinal fluid to protect and support healthy cell function in brain and spinal cord (textbook pg. 65 and ch. 1 and 2 ppt slides, slide 74)
What is the function of the meninges?
They provide protection to the Central Nervous system and add cushion to the Cerebrospinal fluid and bony wall of the skull. (textbook pg. 75)
What are dural extensions?
A part of the meningeal layer of the dura mater that continues to form two lateral compartments for the cerebral hemispheres and one posterior compartment for the cerebellum. (textbook pg. 75)
What structures make up the diencephalon?
Thalamus, epithalamus, subthalamus, hypothalamus, Cranial Nerve II (ch. 6 ppt slides, slide 3)
Where are the lateral ventricles located?
There is one lateral ventricle located deep in the brain in each hemisphere. (textbook pg. 65)
Which structure produces cerebrospinal fluid?
Choroid plexus (Ch. 1 and 2 ppt slides, slide 75)
What are the three meninges, outermost to innermost?
Dura Mater, Arachnoid Mater, and Pia Mater (Ch. 1 and 2 ppt slides, slide 80)
What are the three dural extensions?
Falx cerebri, tentorium cerebelli, and falx cerebelli (textbook pg. 75-76)
What are the functions of the Thalamus?
The thalamus is in charge of channeling sensory projections, integrating sensorimotor information and projecting afferent information, and regulating functions of the association and cerebral cortex. (ch. 6 ppt slides, slide 7)
Where is the third ventricle located?
The third ventricle is a narrow vertical space between the two thalami and is rostrally connected to the lateral ventricles through the interventricular foramen. (textbook pg.67)
The fourth ventricle by way of its openings, the foramina of Luschka and foramen of Magendie allow for the secretion of what to where?
By way of the foramina of Luschka and foramen of Magendie, the fourth ventricle allows CSF to flow to the subarachnoid space (textbook pg. 68)
What are the meningeal spaces associated with the Dura Mater?
Epidural space and the subdural space (Ch. 1 and 2 ppt slides, slide 84)
Where is the falx cerebri located?
The falx cerebri is located between the cerebral hemispheres. (Textbook pg. 75)
What structures are found in the epithalamus?
Habenular nucleus and pineal gland (ch. 6 ppt slides, slide 18)
What does the cerebral aqueduct connect?
The cerebral aqueduct connects the third and fourth ventricles. (textbook pg. 65)
What does the inner lining of ependymal cells in the ventricle do?
The inner lining of ependymal cells prevents of diffusion of substances from the CSF into the brain. (textbook pg. 65)
What is the subarachnoid space filled with?
The subarachnoid space is filled with Cerebrospinal Fluid and blood vessels. (Ch. 1 and 2 ppt slides, slide 86)
Where is the tentorium cerebelli located?
It attaches to the falx cerebri and creates a tent like structure over the cerebellum. (textbook pg. 76)
What is the function of the subthalamus?
The subthalamus is functionally related to the basal ganglia and make contributions to motor functions. (ch. 6 ppt slides, slide 23)
The lateral ventricles are connected by what structure?
The inter ventricular foramen (Textbook pg. 65)
In addition to keeping the brain healthy, What is the role of CSF in incidents of trauma such as excessive acceleration and deceleration?
The CSF provides cushion and shock absorption for the brain and spinal cord in incidents of trauma. (textbook pg. 65)
What is the superior sagittal sinus?
A cavity in the dura that collects deoxygenated blood draining from surface and deep brain and sends back to heart and lungs. ((Ch. 1 and 2 ppt slides, slide 87)
What does the falx cerebelli separate?
The Falx Cerebelli separates the cerebellar hemispheres. (textbook pg. 76)
What two modes does the hypothalamus use to communicate?
Neural and hormonal (ch. 6 ppt slides, slide 21)