Question

1 multiple choice 1 point
after a stroke, nellie speaks slowly and laboriously. she has been diagnosed with a type of aphasia. what part of her brain most likely incurred damage due to the stroke?
hippocampus
cerebellum
brocas area
wernickes area

2 multiple choice 1 point
what is an antagonist?
it is a substance that blocks or impedes the effects of a neurotransmitter.
it is a part of the autonomic nervous system.
it is a substance that mimics or strengthens the effects of a neurotransmitter.
it is a type of neuron in the brain.

Explanation:

Analyze Question 1

The first question describes Nellie speaking slowly and laboriously after a stroke, indicating a type of non-fluent aphasia. Broca's area is responsible for speech production and motor control of speech. Damage here causes Broca's aphasia, characterized by slow, halting, and effortful speech. Wernicke's area is involved in understanding language, and damage there leads to fluent but meaningless speech. The hippocampus is for memory, and the cerebellum is for motor coordination. Thus, Broca's area is the damaged region.

Analyze Question 2

The second question asks for the definition of an antagonist in the context of psychopharmacology. An antagonist is a chemical substance that binds to receptors and blocks, inhibits, or decreases the normal action of a neurotransmitter. Conversely, an agonist mimics or strengthens the effects of a neurotransmitter. Therefore, the correct definition is a substance that blocks or impedes the effects of a neurotransmitter.

Answer:

Question 1

• hippocampus
• cerebellum
• Broca's area (Correct answer)
• Wernicke's area

Question 2

• It is a substance that blocks or impedes the effects of a neurotransmitter. (Correct answer)
• It is a part of the autonomic nervous system.
• It is a substance that mimics or strengthens the effects of a neurotransmitter.
• It is a type of neuron in the brain.