MOLECULAR NEUROBIOLOGY TEST
1 QUESTIONS WITH CORRECT
ANSWERS
Axon - Correct Answers -The neural processes that carries the action potential from the
nerve cell body to a target
Dendrite - Correct Answers -A neuronal process arising from the nerve cell body that
receives synaptic input
Glial cells - Correct Answers -The support cells associated with the neurons
Astrocytes - Correct Answers -CNS, important in regulating the ionic milieu of nerve
cells and, in some cases, transmitter uptake
Oligodendrocyte - Correct Answers -CNS, lay down a myelin
Schwann cell - Correct Answers -PNS, lay down myelin. Named after Theodore
Schwann
Microglial cells - Correct Answers -CNS, concerned primarily with repairing damage
following neural injury
Neuropile - Correct Answers -The dense tangle of Axonal and dendritic branches, and
the synapses between them, that lies between neuronal cell bodies in the gray matter of
the brain and spinal cord
Interneuron - Correct Answers -A neuron whose relatively short axons branch locally to
innervate other neurons
Sensory neuron - Correct Answers -A neuron that carries information from the periphery
to the CNS
Motor neuron - Correct Answers -A neuron that innervates a skeletal muscle
Ependymal - Correct Answers -CNS, make cerebral spinal fluid
Satellite cell - Correct Answers -Surrounds the neuron cell bodies in a ganglion
, Nodes of Ranvier - Correct Answers -Periodic gaps in the myelination of axons were
action potentials are generated
Ganglion - Correct Answers -Collection of hundreds to thousands of neurons found
outside the brain and spinal cord along the course of peripheral nerves
Myelin - Correct Answers -The wrapping around many axons formed by
Oligodendrocytes and Schwann cells
Golgi stain - Correct Answers -A classical method for visualizing neurons and their
processes by impregnation with silver salts, Camillo Golgi early 19th century
Synaptic cleft - Correct Answers -The space that separates pre-and postsynaptic
neurons at chemical synapses
Gap junction - Correct Answers -A specialized intracellular contact formed by channels
that directly connect the cytoplasm of two cells
Connexon - Correct Answers -Precisely aligned, paired transmembrane channels that
form get junctions between cells
Connexin - Correct Answers -Form connexons, members of a specialized family of
channel proteins
Action potential - Correct Answers -Electrical signal conducted along axons by which
information is conveyed from one place to another in the nervous system
Voltage clamp - Correct Answers -A technique that uses electronic feedback to
simultaneously control the membrane potential of a cell and measure the
transmembrane currents that result from the opening and closing of ion channels
Inside-out patch clamp - Correct Answers -Piece of the membrane is obtained and a
researcher could change the intracellular medium to see how intracellular molecules
affect the ion channel
Outside-out patch clamp - Correct Answers -Piece of the membrane is obtained and a
researcher could change the extracellular medium to see how extracellular molecules
affect the ion channel, specifically neurotransmitters
Intracellular recording - Correct Answers -Electrode placed inside the cell, can detect
the smaller, graded changes in electrical potential that trigger action potentials
Exocytosis - Correct Answers -A form of cell secretion resulting from the fusion of the
membrane other storage organelle, such as a synaptic vesicle, with the plasma
membrane
1 QUESTIONS WITH CORRECT
ANSWERS
Axon - Correct Answers -The neural processes that carries the action potential from the
nerve cell body to a target
Dendrite - Correct Answers -A neuronal process arising from the nerve cell body that
receives synaptic input
Glial cells - Correct Answers -The support cells associated with the neurons
Astrocytes - Correct Answers -CNS, important in regulating the ionic milieu of nerve
cells and, in some cases, transmitter uptake
Oligodendrocyte - Correct Answers -CNS, lay down a myelin
Schwann cell - Correct Answers -PNS, lay down myelin. Named after Theodore
Schwann
Microglial cells - Correct Answers -CNS, concerned primarily with repairing damage
following neural injury
Neuropile - Correct Answers -The dense tangle of Axonal and dendritic branches, and
the synapses between them, that lies between neuronal cell bodies in the gray matter of
the brain and spinal cord
Interneuron - Correct Answers -A neuron whose relatively short axons branch locally to
innervate other neurons
Sensory neuron - Correct Answers -A neuron that carries information from the periphery
to the CNS
Motor neuron - Correct Answers -A neuron that innervates a skeletal muscle
Ependymal - Correct Answers -CNS, make cerebral spinal fluid
Satellite cell - Correct Answers -Surrounds the neuron cell bodies in a ganglion
, Nodes of Ranvier - Correct Answers -Periodic gaps in the myelination of axons were
action potentials are generated
Ganglion - Correct Answers -Collection of hundreds to thousands of neurons found
outside the brain and spinal cord along the course of peripheral nerves
Myelin - Correct Answers -The wrapping around many axons formed by
Oligodendrocytes and Schwann cells
Golgi stain - Correct Answers -A classical method for visualizing neurons and their
processes by impregnation with silver salts, Camillo Golgi early 19th century
Synaptic cleft - Correct Answers -The space that separates pre-and postsynaptic
neurons at chemical synapses
Gap junction - Correct Answers -A specialized intracellular contact formed by channels
that directly connect the cytoplasm of two cells
Connexon - Correct Answers -Precisely aligned, paired transmembrane channels that
form get junctions between cells
Connexin - Correct Answers -Form connexons, members of a specialized family of
channel proteins
Action potential - Correct Answers -Electrical signal conducted along axons by which
information is conveyed from one place to another in the nervous system
Voltage clamp - Correct Answers -A technique that uses electronic feedback to
simultaneously control the membrane potential of a cell and measure the
transmembrane currents that result from the opening and closing of ion channels
Inside-out patch clamp - Correct Answers -Piece of the membrane is obtained and a
researcher could change the intracellular medium to see how intracellular molecules
affect the ion channel
Outside-out patch clamp - Correct Answers -Piece of the membrane is obtained and a
researcher could change the extracellular medium to see how extracellular molecules
affect the ion channel, specifically neurotransmitters
Intracellular recording - Correct Answers -Electrode placed inside the cell, can detect
the smaller, graded changes in electrical potential that trigger action potentials
Exocytosis - Correct Answers -A form of cell secretion resulting from the fusion of the
membrane other storage organelle, such as a synaptic vesicle, with the plasma
membrane
