A nurse is explaining the role of neurotransmitters in the pathophysiology of MDD to a group of nursing students. Which neurotransmitters are mentioned in the text as being involved in regulating mood, motivation, reward, cognition, and stress response?

Acetylcholine and gamma-aminobutyric acid (GABA).

Glutamate and epinephrine.

Serotonin, dopamine, and norepinephrine.

Endorphins and oxytocin.

Answer and Explanation

The Correct Answer is C

Choice A rationale:

Acetylcholine and gamma-aminobutyric acid (GABA) are not the primary neurotransmitters involved in regulating mood, motivation, reward, cognition, and stress response. Acetylcholine plays a role in memory and muscle control, while GABA is an inhibitory neurotransmitter that helps regulate anxiety and sleep. These neurotransmitters are not as closely associated with the functions mentioned in the question.

Choice B rationale:

Glutamate is a major excitatory neurotransmitter in the central nervous system, and epinephrine (also known as adrenaline) is a hormone that prepares the body for the fight-or-flight response. While both glutamate and epinephrine play important roles in various physiological responses, they are not primarily responsible for regulating mood, motivation, reward, cognition, and stress response as mentioned in the question.

Choice C rationale:

Serotonin, dopamine, and norepinephrine are all key neurotransmitters involved in the regulation of mood, motivation, reward, cognition, and stress response. These neurotransmitters have been extensively studied in the context of mood disorders like Major Depressive Disorder (MDD). Serotonin is often associated with feelings of well-being and happiness, dopamine is linked to pleasure and reward pathways, and norepinephrine is involved in the body's stress response. Imbalances in these neurotransmitters have been implicated in the development of mood disorders.

Choice D rationale:

Endorphins and oxytocin are important neurotransmitters, but they are not as directly related to the regulation of mood, motivation, reward, cognition, and stress response as the neurotransmitters mentioned in choice C. Endorphins are known for their role in pain modulation and feelings of pleasure, while oxytocin is often referred to as the "bonding hormone" and is associated with social connections and childbirth.

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Correct Answer is C

Explanation

Choice A rationale:

Chronic stress is known to activate the Hypothalamic-Pituitary-Adrenal (HPA) axis, which leads to increased cortisol production. While cortisol is important for various physiological functions, chronic elevation of cortisol due to stress can actually have detrimental effects on the brain. Elevated cortisol levels have been associated with impaired neurogenesis (the formation of new neurons) and synaptic plasticity (the ability of synapses to change and adapt), both of which play crucial roles in maintaining cognitive function and mental health.

Choice B rationale:

This statement is not accurate. Chronic stress typically leads to hyperactivity, not hypoactivity, of the HPA axis, resulting in increased levels of cortisol. The increased cortisol levels can negatively impact neurogenesis and synaptic plasticity, which are key factors in depression and cognitive function.

Choice C rationale:

This is the correct statement. Chronic stress triggers hyperactivity of the HPA axis, causing elevated levels of cortisol. While cortisol is meant to help the body cope with stress in the short term, chronic elevation can lead to adverse effects on the brain. High cortisol levels have been linked to impaired neurogenesis and synaptic plasticity, contributing to the development of depression and cognitive deficits.

Choice D rationale:

This statement is not accurate. Chronic stress tends to lead to hyperactivity of the HPA axis and elevated cortisol levels. Reduced cortisol levels, as suggested in this choice, are not commonly associated with chronic stress and its impact on depression.

A. Depression is solely caused by genetic factors, with no influence from environmental factors. B. Genetic factors play a minor role in depression, with environmental factors being the primary cause. C. Genetic theory suggests that specific genes are responsible for causing depression, independent of environmental factors. D. Genetic factors make some individuals more vulnerable to developing depression, but environmental factors also play a significant role in its expression.

Correct Answer is D

Explanation

Choice A rationale:

Depression is not solely caused by genetic factors. While genetics do play a role in predisposing individuals to depression, it's a complex interplay between genetic susceptibility and environmental influences that contribute to the development of the disorder.

Choice B rationale:

Genetic factors are not minor players in depression. Research suggests that genetics can significantly influence a person's susceptibility to depression. However, environmental factors, such as trauma, stress, and life experiences, also contribute substantially to the onset and course of depression.

Choice C rationale:

The relationship between genetics and depression is not as straightforward as specific genes causing depression independently of environmental factors. Depression is a multifactorial disorder influenced by a combination of genetic, biological, psychological, and environmental factors.

Choice D rationale:

This is the correct answer. Genetic factors do contribute to an individual's vulnerability to depression. Studies of families, twins, and heritability have demonstrated a genetic component to depression. However, it's crucial to recognize that genetic predisposition interacts with environmental factors. Trauma, loss, chronic stress, and other environmental triggers can precipitate depressive episodes in genetically susceptible individuals.

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A nurse is explaining the role of neurotransmitters in the pathophysiology of MDD to a group of nursing students. Which neurotransmitters are mentioned in the text as being involved in regulating mood, motivation, reward, cognition, and stress response?

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

A client is curious about the impact of chronic stress on the development of depression. Which statement accurately reflects the relationship between chronic stress and depression according to the text?

Correct Answer is C

Explanation

A client is wondering about the genetic factors that contribute to depression. What is the relationship between genetic factors and depression according to the text?

Correct Answer is D

Explanation

A nurse is discussing the various treatment approaches for Major Depressive Disorder (MDD) with a client. Which treatment modality involves stimulating the brain electrically or magnetically to induce changes in neuronal activity and neuroplasticity?

(Select All That Apply): A nurse is providing care for a client with suspected major depressive disorder (MDD). Which of the following are risk factors for developing MDD? Select all that apply.

A client is experiencing persistent feelings of sadness, guilt, and worthlessness. They also report significant weight loss and insomnia. The nurse suspects the client may have:

A nurse is assessing a client who has been experiencing persistent feelings of sadness, fatigue, and difficulty concentrating. The client denies any history of manic episodes. Which of the following conditions should the nurse consider as a possible differential diagnosis for this client?

(Select All That Apply): A nurse is teaching a group of nursing students about the diagnostic criteria for major depressive disorder (MDD) according to DSM-5. Which of the following are part of the diagnostic criteria? Select all that apply.

(Select All That Apply): A nurse is discussing the psychosocial factors that can affect or be affected by depression with a client. Which of the following factors are considered psychosocial factors related to depression? Select all that apply.

A client is sharing their experiences with a nurse. The client states, "I just can't seem to enjoy anything anymore. Even activities I used to love don't bring me pleasure." This statement by the client is indicative of:

A nurse is providing education to a group of nursing students about major depressive disorder (MDD). Which of the following statements accurately describes a characteristic of MDD?