brain stuff for final Flashcards
What is the CNS made up of?
The brain and spinal cord
What structures protect the CNS?
Meninges
What is the name of the condition where the meninges are inflamed?
Meningitis
What are the name of the 3 layers of the Meninges?
Dura mater, Arachnoid membrane, Pia mater
Dura mater
Thick, tough outer layer
Outermost covering of the brain, composed of tough fibrous connective tissue
Forms the periosteum of the skull
Arachnoid membrane
Thin cobweb-like layer
Pia mater
Thin layer containing lots of blood vessels
Innermost covering of the brain, delicate and vascular
What is located between the arachnoid layer and the pia mater
cerebrospinal fluid (CSF)
What is the purpose of the cerebrospinal fluid?
Protects the brain by preventing it from contacting the skull
What is composed of the cerebral cortex?
Gray matter with dendrites and soma
What is composed of the cerebral medulla?
White matter
What is the Basal nuclei?
Islands of gray matter
What´s the difference between white and gray matter?
The axons (white matter) send the info while the dendrites and soma (gray matter) process the info
Where do white and gray matter get their color?
The gray matter has an absence of myelin and the white matter has myelin in the tissue
What makes up the diencephalon?
Thalamus, hypothalamus, pineal gland
Where is the limbic system located?
Medial temporal lobes
What is the function of the midbrain?
Replays info to the cerebrum, controls body movement and posture
What is the function of the Pons?
Central control of the rhythm and quality of breath
3 nervous system functions
Sensory input- Detects changes in stimuli inside and outside the body
Integration- Processing and interpreting the information
Response- Activation of muscles (motor output)
What are neurons?
Conduct impulses around the body
makeup 10% of nerve cells
What are neuroglia?
(Nerve-glue)
Support, insulate, and protect neurons
90% of nerve cells
What do axons do?
Send impulses away from the cell body