Quiz Canvas: Chapter 1 Purves Flashcards
Which of the following statements about the expression of genes in the nervous system is true?
Every gene in the human genome is expressed in the CNS.
There are tens of thousands of neuron-specific genes (i.e., genes that are not expressed outside the CNS).
Humans have 100 times more genes than invertebrate animals such as Drosophila.
Most of the genes in the human genome are expressed in the CNS.
Humans have three to four times more genes than mice have.
Most of the genes in the human genome are expressed in the CNS.
Which of the following is not considered to be a “model” organism?
Fruit fly
Mouse
The nematode C. elegans
The marine snail Aplysia
Zebrafish
The marine snail Aplysia
Which of the following is a feature that distinguishes the four model organisms from other animals that have been intensively studied by neuroscientists?
Ease of genetic analysis and manipulation
An extensive and interesting behavioral repertoire
All of the options
Specific neural structures or behaviors of interest
Nervous systems of substantial complexity
Ease of genetic analysis and manipulation
The scientist who shared the Nobel Prize with Camillo Golgi for his anatomical studies of the CNS was:
Thomas Hodgkin.
Louis Pasteur.
Santiago Ramón y Cajal.
Allesandro Volta.
Luigi Galvani.
Santiago Ramón y Cajal.
Which technique first produced unequivocal support for the neuron doctrine of the nervous system (as opposed to the reticular theory)?
EEG (electroencephalogram)
Extracellular electrical recordings
Electron microscopy of nervous tissue
Golgi stain (light microscopy)
Acetylcholinesterase staining
Electron microscopy of nervous tissue
Which of the following statements about neural and glial cells is false?
The endoplasmic reticulum is concentrated in axons.
Mitochondria are concentrated at presynaptic terminals.
Glial cells can not rapidly transmit long-range electrical signals.
Exocytosis and endocytosis are important for synaptic communication.
The endoplasmic reticulum is concentrated in axons.
A neuron that innervates (i.e., makes synaptic contact with) a large number of other neurons
represents convergent neural signaling.
represents divergent neural signaling.
must fire at very high frequencies to be useful.
can fire only at very low frequencies.
represents massive neural integration
represents divergent neural signaling.
Which of the following is not an established role for glial cells?
Providing scaffolds that assist neural development
Assisting synaptic transmission via neurotransmitter uptake
Integrating information to assist neural computation
Maintaining the ionic milieu surrounding nerve cells
Hastening the propagation of neural impulse
Integrating information to assist neural computation
Which of the following type of glial cell myelinates peripheral axons?
All of the above
Oligodendrocytes
Schwann cells
Microglia
Astrocytes
Schwann cells
The technique that first revealed the tremendous diversity of neuronal cell types (numbering in the hundreds or thousands in vertebrate animals) is called:
fluorescence staining.
electron microscopy.
cresyl violet staining.
the Nissl stain.
the Golgi stain.
the Golgi stain.
The type of nerve cell that synapses upon muscles is called a:
motor neuron (or motoneuron).
spinal interneuron.
dorsal root neuron.
afferent neuron.
cranial neuron.
motor neuron (or motoneuron).
Which of the following is an advantage that intracellular recordings have over extracellular recordings?
They can record from many neurons at once.
All of the above
They can record synaptic and receptor potentials.
They are technically easier to obtain.
They can be used in many more parts of the nervous system.
They can record synaptic and receptor potentials.
The set of neurons and small ganglia associated with the digestive tract is called the __________ nervous system.
peripheral
enteric
autonomic
parasympathetic
sympathetic
enteric
Which of the following is not part of the brain?
Diencephalon
Brainstem
Spinal cord
Cerebral hemispheres
Cerebellum
Spinal cord
Representation of which of the following is best accomplished using a topographic map?
Episodic memory
The visual world
Verbs and nouns
Odors
Objects
The visual world
