Neuroscience Quiz

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Questions and Answers

What is the main function of Broca's area in the brain?

Visual processing
Auditory processing
Motor control of speech (correct)
Memory consolidation

What is the difference between ionotropic and metabotropic receptors?

Ionotropic receptors are located on the presynaptic neuron, while metabotropic receptors are located on the postsynaptic neuron.
Ionotropic receptors are responsible for inhibitory neurotransmission, while metabotropic receptors are responsible for excitatory neurotransmission.
Ionotropic receptors are activated by G-proteins, while metabotropic receptors are activated by ions.
Ionotropic receptors cause a rapid, short-lived response, while metabotropic receptors cause a slower, longer-lasting response. (correct)

What is the main function of the blood-brain barrier?

To facilitate communication between neurons
To protect the brain from physical trauma
To prevent the entry of foreign substances into the brain (correct)
To regulate the flow of cerebrospinal fluid

What is the difference between resting potential and Nernst potential?

Resting potential is the potential difference required to balance the concentration gradient of a single ion, while Nernst potential is the potential difference across the membrane when no ions are flowing. (C) Signup and view all the answers

What is the function of the axon hillock in a neuron?

To integrate incoming signals and generate an action potential (B) Signup and view all the answers

What is the main difference between grey and white matter in the brain?

Grey matter contains cell bodies while white matter contains axons and dendrites. (B) Signup and view all the answers

What is the fallacy of phrenology?

The idea that specific personality traits can be determined by the shape of the skull. (C) Signup and view all the answers

What is the main function of Broca's area in the brain?

Speech production. (B) Signup and view all the answers

What is the difference between ionotropic and metabotropic receptors?

Ionotropic receptors directly open ion channels while metabotropic receptors activate second messenger systems. (A) Signup and view all the answers

What is the main difference between excitatory and inhibitory synapses?

Excitatory synapses increase the likelihood of an action potential while inhibitory synapses decrease the likelihood of an action potential. (D) Signup and view all the answers

What is the main difference between grey and white matter in the brain?

Grey matter contains cell bodies while white matter consists of axons and myelin (C) Signup and view all the answers

What is the fallacy of phrenology?

The belief that personality traits can be determined by the shape of the skull (A) Signup and view all the answers

What is the role of the blood-brain barrier?

To protect the brain from harmful substances in the bloodstream (C) Signup and view all the answers

What is the difference between ionotropic and metabotropic receptors?

Ionotropic receptors directly open ion channels while metabotropic receptors activate second messenger systems (D) Signup and view all the answers

What is the difference between temporal and spatial summation in neuronal signaling?

Temporal summation involves multiple signals from the same neuron over time while spatial summation involves signals from multiple neurons at the same time (A) Signup and view all the answers

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