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Marissa T.
Medical student
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Writing
TutorMe
Question:

Write a 4 line rhyming poem pertaining to a subject of your choice.

Marissa T.
Answer:

Though all seek happiness, from unhappiness they should not feign As without it the realms of content would always feel mundane It is in love that this balance is revealed To take you where thought impossible and show you what is real

Psychology
TutorMe
Question:

Explain, using Pavlov's experiments how conditioning can alter our behaviour.

Marissa T.
Answer:

Pavlov created an experiment to demonstrate the existence of classical conditioning. The experiments revealed that we could elicit a particular type of behaviour by associating it to another. In Pavlov's experiments the dogs would respond to the sound of a bell/opening of a door with increased salivary production. This occurrence did not happen rapidly but rather it took time. Eventually the dogs, who normally began salivating when presented with food began to salivate when the food was removed. It was due to the same process of feeding occurring rather than the actual presence of the food.

Biology
TutorMe
Question:

What is the underlying mechanism that allows us to pull our hand off of a hot surface with rapid speed?

Marissa T.
Answer:

When our hand touches the hot surface the sensory receptors on our skin send a nerve signal in a pathway known as a reflex arc. This pathway involves the propagation of nerve signal via neurons (that may or may not be myelinated) from the sensory receptor to the afferent nerve which then synapses in the integration center. This center may involve the use of an interneuron which will then synapse once more on an efferent or motor neuron. The efferent neuron ultimately transmits the nerve signal to trigger an action potential. The action potential is responsible for the depolarization of membranes allowing signal propagation to continue. As the signal finally reaches the effector (typically muscle fibres in this case) the muscle will fire a contraction to remove the hand out of harms way.

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