Anatomy Final 2

gives rise to gray matter (cell bodies)

gives rise to white matter (axons from cells bodies in mantle later)

seperate right and left side

seperates dorsal and ventral sides

gives rise to association neurons with a sensory function

• gives rise to motor neurons
• cell bodies and synapses in CNS
• axons in PNS

neuroglial cells- grow central process into dorsal side and synapse with assoc. neurons from alar plate

produces cerebrospinal fluid, associated with hindbrain

telencephalon

diencephalon

mesencephalon

meten and myelencephalon

• general sensations from head and face
• 1st association center for hearing and balance

• recieve sensations from throat and mouth
• 1st assoc. center for taste

innervate the branchial and smooth muscles and glands of gut

innervate tongue muscles

• visceral control to reticular formation
• myelen

• relay station for motor info from cerebral cortex to cerebellum
• meten

• motor coordination, balance, proprioreception
• meten

• assoc. neurons for visual reflexes (subconcious localizing visual stimuli)
• mesen

• center for auditory reflexes (subconscious processing to localize sound)
• relay station for info going to cerebral cortex

• relay station for ALL sensory info intended for cerebral cortex EXCEPT smell
• dien

• directly regulates most viseral functions (autonomic nervous system)
• control pituitary secretions
• emotions
• dien

• connects hypothalamus and pituitary gland
• dien

• site of conscious thoughts, decisions, and movements
• telen

• initiate stereotypical movement patterns
• telen

columns which then divide into nerve tracts or fasiculi

contain sensory axons that synapse with internerons

contain the neuron cell bodies of somatic motor neurons

contain the neuron cell bodies of autonomic neurons

• sensory receptor
• sensory neuron
• interneuron
• motor neuron
• effector organ

surrounds individual axons

binds together fascicles (groups of axons)

holds fasicles that form the nerve together

gathering of spinal nerves at end of spinal cord

where spinal cord ends (L1)

short tracts in white matter that form a ring around gray matter

carries proprioreception, two point discrimination, pressure, and vibration info to the cerebral cortex

carries pain, temp, light, touch, pressure, tickle, and itch info to cerebral cortex

carries proprioreceptive info to the cerebellum

controls movements of the neck, trunk, upper and lower limbs, especially fingers

controls movement of neck and trunk

tactile info, taste

sound

vision

generally responsible for higher function like logic and thought

smell

voluntary motor output originates here in 5th layer of cells (pyramidal)