Please enable JavaScript.
Coggle requires JavaScript to display documents.
Central Nervous System (Spinal Cord (Gray Matter (Lateral horns: located…
Central Nervous System
-
Major Parts of the Brain
Diencephalon
-
Superior to brain stem, surrounded by cerebrum.
Function: Relays sensory information between brain regions and controls many autonomic functions of the peripheral nervous system.
Brain Stem
-
Made of; Medulla oblongata, pons and midbrain
Cerebrum
-
Function: Control senses, thoughts, and movements
Cerebellum
-
-
Vermiss: a narrow, worm shaped structure in between both sides of the cerebellum.
-
Function: Receives information from the sensory systems, the spinal cord, and other parts of the brain and then regulates motor movements
Functions of the Lobes
Parietal Lobe: Processing sensory information regarding the location of parts of the body and interpreting visual information.
Occipital Lobe: Visual processing center of the mammalian brain containing most of the visual cortex.
Frontal Lobe: Motor function, problem solving, memory language, and impulse control.
-
Layers of the Meninges
Dura Mater
Dense, irregular, C.T. with many blood vessels and nerves.
-
-
-
Pia Mater
Innermost, nearly transparent layer; has many nerves and blood vessels.
-
-
-
Spinal Cord
-
Two enlargements:
Lumbar enlargement: T9-T12, nerves to and from lower limbs.
Cervical enlargement: C4- T1, nerves to and from upper limbs
-
Gray Matter
Lateral horns: located on the side cell bodies of motor neurons to cardiac, and smooth muscle and glands.
-
-
-
White Matter
Divided into two columns
-
Anterior(ventral), Posterior(dorsal), lateral white columns.
-
Function
Gray matter receives and integrates information, especially for spinal reflexes.
-
Action Potential
-
Strong enough stimulation or nerve impulse causes Na+ gates to open, then Na+ rush into cells causing depolarization.
If a strong enough, depolarization occurs, threshold potential is reached and impulse is sent down axon.
K+ rushes out of neuron after Na+ rush in, which is causes a re-polarization of the membrane back to resting potential.
-
-