Anatomical Organisation of the Nervous System Flashcards
What is ectodermal tissue?
One of the first 3 layers of cells that are formed in the early embryo.
What are the first 3 layers of cells formed in the embryo?
Ectodermal, mesodermal and endodermal.
What is a neural tube?
A hollow structure that develops to form the brain and spinal tube.
What is CSF?
Cerebrospinal fluid.
What does CSF do?
Mechanically and immunologically protects the brain and spine.
What happens to the neural tube after 28 days?
It splits into three chambers.
Which three sections does the neural tube develop into?
The forebrain, midbrain and hindbrain.
What is the prosencephalon?
The forebrain
What is the mesencephalon?
The midbrain
What is the rhombencephalon?
The hindbrain.
How many ventricles are there in the ventricular system?
4
Which ventricles are in the prosencephalon/forebrain?
The left and right lateral ventricle.
Which ventricles are in the mesencephalon/midbrain?
Third ventricle
Which ventricles are in the rhombencephalon/hindbrain?
Fourth ventricle
What is the dura mater?
A bag of fibrous tissue that carries the central nervous system.
What is the choroid plexus?
Network of small blood vessels within the ventricles in the brain.
Choroid = blood-related
Plexus = branching network of vessels/nerves
What does the cerebral aqueduct do?
Connects the 3rd ventricle to the 4th ventricle.
What is apoptosis?
Programmed cell death
What is necrosis?
Unprogrammed cell death, caused by infection, injury, cancer or inflammation.
What do neurotrophic factors do?
- Support the growth and survival of neurons.
- Decide and keep which neurons are the most useful.
What are the two sections of the forebrain?
Telencephalon and the diencephalon
Which part of the brain contains the telencephalon?
Forebrain
Which part of the brain contains the diencephalon?
Forebrain
What does the telencephalon contain?
Cerebral cortex, basal ganglia and the limbic system.