Biological Explanation of OCD

what is a synapse

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Answer explanation

junction between two neurons across which electrical signals pass.

The structure and process of synaptic transmission

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- nerve impulse arrives which triggers the release of the neurotransmitter form the voltage into the synaptic cleft from the vesicles.

- neurotransmitters diffuse across to the synaptic cleft.

- neurotransmitters bind to the specific cell receptor sites in the post synaptic knob

- they trigger the electrical signal in the next neuron.

- excess neurotransmitters are removed from the cleft by the reuptake or digested enzyme.

What is the term for the genetic makeup of an individual?

• Phenotype

• Genotype

• Allele

• Chromosome

Which concept explains the observable characteristics of an individual?

• Genotype

• Phenotype

• Allele

• Genome

The location of neurotransmitters

• axon terminals

• dendrites

• Schwann cells

• cell body

Serotonin is a neurotransmitter that helps regulate:

• learning and memory
• pain and pleasure
• muscle movements
• sleep, moods/emotions

After being released, some of the neurotransmitters are REABSORBED by the presynaptic neuron in a process called ____________________.

• reuptake

• depolarization

• polarization

• resting potential

Which of the following in not an emotional characteristic of OCD?

• Anxiety

• Lowered mood

• Guilt

• Compulsion

Obsessions are r________ and intrusive thoughts that are perceived as inappropriate.

Which of these is a true statement concerning OCD?

• OCD does not run in families

• OCD involves just one gene

• OCD is caused by a combination of different genes

• OCD is caused by just by one neurotransmitter