Overview of the Central Nervous System; Brain Development - A&P

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What does the CNS consist of?

Brain and spinal cord

What is the CNS responsible for?

Primarily our integrative function

Integrative function

Receives all stimuli from sensory neurons, analyzes it, and decided what to do with it (respond/memory)

What are the 3 layers of the meninges?

Dura mater, arachnoid mater, and pia mater

Dura mater

outermost layer of meninges

Arachnoid mater

Middle layer of meninges, contains space called subarachnoid space

What is the subarachnoid space filled with

Cerebrospinal fluid (CSF) that functions as a shock absorber

Pia mater

Innermost layer of meninges that is a tough protective layer, protects brain and spinal cord from physical damage and infection that covers CNS

Brain development

Starts early on in development (by week 3 after conception as a neural tube (aka embryonic brain)

What does the neural tube develop into

3 distinct parts: rhombencephalon, mesencephalon, prosencephalon

Rhombencephalon

1st bump of neural tube that develops into cerebellum, medulla oblongata, and pons

Mesencephalon

2nd bump of the neural tube that develops into midbrain

Prosencephalon

3rd bump of neural tube that divides into two sections: telencephalon and diencephalon

Telencephalon vs diencephalon

Telencephalon develops into cerebrum while diencephalon develops into interbrain