Neuro 01

Question 1

What is the reticular Theory

Answer 1

Axons and dendrites fuse to from a large plexus that occupies all of the gray matter

Question 2

Santiago Ramon y Cajal

Answer 2

founder of Neuroscience, coined Neuron doctrine

Question 3

How was the dispute between both Theories solved

Answer 3

Electron microscopy showed, that pre- and postsynaptic elements are divided by synaptic cleft.

Question 4

Neuronal cell types

Answer 4

Projection Neurons, Intrinsic Neurons

Question 5

Projection Neurons

Answer 5

Send axons out of the structure they are located in

Question 6

Intrinsic Neurons

Answer 6

only make synapses in their own structure

Question 7

What is the spine problem

Answer 7

Why do excitatory axons connected to spines and not the dendritic shaft

Question 8

What are ideas for the spine Problem

Answer 8

1. serve to enhance synaptic connectivity
2. are electrical compartements that modify potentials
3. are biochemical compartements that implement input specific plasticity

Question 9

Sir Charles Sherrington

Answer 9

Discovered the synapse, postulated the concept of inhibition, Reziprocal innervation

Question 10

Reziprocal innervation

Answer 10

Activation of one muscle inhibits another one

Question 11

Receptive field

Answer 11

The concept of the receptive field lead to the idea, that the Neuron is the anatomical, functional and perceptual unit of the brain

Question 12

Problem of the Neuron doctrine

Answer 12

Too limiting, since ensembles of Neurons, rahter than individual cells form physiological units