unit 2 bio psych notes (but simpler)

Vision System Sensory Receptor

Photoreceptors

Vision System Cranial Nerve

Cranial Nerve 2

Vision System Major Brain Areas

LGN (thalamus), V1 and V2 (occipital lobe), Superior Colliculus (midbrain)

Gustation System Sensory Receptors

Taste Buds

Gustation System Cranial Nerves

Cranial Nerve 7, 9, 10

Gustation System Major Brain Areas

NST → thalamus → primary gustatory cortex (in the insula)

Hearing System Sensory Receptor

Hair cells

Hearing System Cranial Nerves

Cranial Nerve 8

Hearing System Major Brain Areas

Inferior Colliculi, MGN, Auditory cortex

Olfactory System Sensory Receptor

Cilia

Olfactory System Cranial Nerves

Cranial Nerve 1

Olfactory System Major Brain Areas

Amygdala, Hippocampus, Olfactory Cortex, Entorhinal cortex

Neuron Key A

Dendrite

Neuron Key B

Soma

Neuron Key C

Axon Hillock

Neuron Key D

Myelin Sheath

Neuron Key E

Node of Ranvier

Neuron Key F

Terminal Buttons

Action Potential 1

Resting State

Action Potential 2

Depolarization

Action Potential 3

Repolarization

Action Potential 4

Hyperpolarization

Action Potential 5

Resting State

Action Potential 6

Membrane Potential (mV)

Action Potential 7

Time (ms)

Synaptic Transmission 1

Action potential propagates to terminals

Synaptic Transmission 2

Calcium ion channels open and calcium ions enter the presynaptic cell

Synaptic Transmission 3

Calcium ions attach to vesicles

Synaptic Transmission 4

Versicles bind to the presynaptic cell membrane and open (get unzipped)

Synaptic Transmission 5

Neurotransmitters are released into the synapse

Synaptic Transmission 6

Neurotransmitters bind to receptors on the postsynaptic cell membrane