Questions Purves

14 important questions on Questions Purves

Which of the following statements about the expression of genes in the nervous system is true?

  1. humans have 100 times more genes that invertebrate animals such as Drosophila
  2. every gene in the human genome is expressed in the CNS
  3. Humans have three to four times more genes than mice have
  4. Most of the genes in the human genome are expressed in theCNS
  5. there are tens of thousands of neuron-specific genes

4.

What is not considered to be a model organism

The marine snail aplysia

What is a feature that distinguishes the four model organisms form other animals that have been intensively studie by neuroscientist

Ease of genetic analysis and manipulation
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The scientist who shared the Nobel Prize with Camillo Goglgi for his anatomical studies of the CNS was

Santiago Ramón y Cajal

Which technique first produced unequivocal support for the neuron doctrine of the nervous system

Golgi stain (light microscopy)

A neuron that innervates a large number of other neurons

Represents divergent neural signaling

The technique that first revealed the tremendous diversity of neuronal cell types is called

Fluorescence staining

The type of nerve cell that synapse upon muscles is called a

Motor neurons (or motoneurons)

What is an advantage that intracellular recordings have over extracellular recordes

They can record synaptic and receptor potentials

The set of neurons and small ganglia associated with the digestive tract is called the ... Nervous system

Enteric

Representations of which is best accomplished using a topographic map

The visual world

The brain imaging technique that makes use of a narrow X-ray beam is called

CT

The structural brain imaging technique that relies on atoms behaving as small magnets is called

MRI

Cognitive neuroscience is concerned with

Language, emotions, abstract thought, mathematical ability

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