Principle stating that the size, amplitude, and velocity of the action potential are independent of the intensity of the stimulus that initiated it
Swelling of the soma, the point where the axon begins
network of thin tubes within a cell that transports newly synthesized proteins to other locations
A) Endoplasmic reticulum
The main fuel of vertebrate neurons
The main difference between Interneuron/Intrustic Neuron and Local Neuron?
C) Local neuron has none, or small axon
This drug that attaches to the sodium channels of the membrane, preventing sodium ions from entering and thereby blocking action potentials
B) Local anesthetic
Myelin is mainly made of?
Insulting material composed of Fats and Protein
Nucleus has 2 meanings, which ones?
structure within a cell that contains the chromosomes; also a cluster of neuron cell bodies within the CNS
Tansmission of an action potential down an axon is termed?
A) Propagation of an action potential
This specialized type of Neuron is found in the CNS, specifically, the Brain, including cerebral cortex, the hippocampus, and in the amygdala.
One of the main structural features of this neuron is the special shape of the soma, or cell body, after which the neuron is named. Other key structural features of this cell are a single axon, a large apical dendrite, multiple basal dendrites, and the presence of dendritic spines.
Name these neurons
B) Sensory Neuron
C) Motor Neuron
D) Pyramidal Neuron
The blood-brain barrier requires certain chemicals to be Actively transported.
a) What is transporting the chemicals?
b) What is the fuel used to transport this?
a) Protein-mediated pumps
Metabolism in the neuron is performed mainly by which structure
Myelin sheath gaps are also called...?
Nodes of Ranvier
glia cells that surround and insulate certain axons in the vertebrate brain and spinal cord
type of glia cells that guides the migration of neurons and the growth of their axons and dendrites during embryological development
C) Radial Glia
Term for the time when potassium gates remain open wider than usual, requiring a stronger than usual stimulus to initiate an action potential?
Relative Refractory Period
jumping of action potentials from one node to another by the flow of positive ions
N+ channels are only to be found where in a myelinated axon
Gaps in between the sheath, aka Nodes of Ranvier
glia cell that surrounds and insulates certain axons in the body of vertebrate are named
a) for PNS?
b) for CSN?
b) Schwann cells
What chemical is necessary for the metabolism of glucose?