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Health psychology > Lecture 3 - Biological Bases of Behaviour > Flashcards

Lecture 3 - Biological Bases of Behaviour Flashcards

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1
Q

What are the components of the Nervous system?

A

CNS & PNS

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2
Q

What are the 2 components of the PNS?

A

Somatic (sensory & motor neurons, voluntary) & autonomic (internal, involuntary)

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3
Q

what are the 2 components of the PNS - Autonomic ?

A

Sympathetic & parasympathetic

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4
Q

what are the functions of the frontal lobe?

A

Abstract thoughts, decision making, planning and cognitive thoughts.

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5
Q

what is the limbic system made up of ?

A

Hypothalamus, thalamus, hippocampus and amygdala

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6
Q

how does the hippocampus relate to depression?

A

appears smaller when depressed

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7
Q

how does the amygdala relate to depression

A

increased activity

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8
Q

how does the HPA relate to depression

A

regulates motivated behaviour - triggers stress response

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9
Q

how does the thalamus relate to depression?

A

links to bipolar disorder

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10
Q

whats the role of the pituitary gland?

A

regulates the thyroid and parathyroid, adrenals, pancreas, testes and ovaries. it is under control by the hypothalamus

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11
Q

what are the 2 hormones in the stress response system?

A

Corticotropin-releasing hormone (CRH) Adrenocorticotropic hormone (ACTH)

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12
Q

what are the 2 chemical messengers in the body ?

A

neurotransmitters –> neurons hormones –> organs

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13
Q

what are the symptoms of depression?

A

weight loss/gain restlessness sleep isolation/withdrawal from social activities suicidal thoughts problems thinking/concetrating

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14
Q

what are the 3 main neurotransmitters associated with depression?

A

serotonin dopamine norepinephrine

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15
Q

what are the 3 less involved NT associated with depression?

A

acetylcholine glutamate GABA

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16
Q

what is the effect of depression of the endocrine system?

A

disturbed circadian rhythms increased cortisol decreased eostrogen decreased level of testosterone after 50

17
Q

how many neurons are present at birth?

A

100-200 billion, connections increase with age. Children who are exposed to unhealthy environments impacts the brain development

18
Q

what are the 3 types of stress?

A

positive or normal stress

tolerable stress -

toxic stress - strong, frequent or prolonged activation of the stress system. often abusive environments

19
Q

What is the role of HPA axis?

A
  1. releases corticotropin-releasing hormone
  2. triggers pituitary at base of the brain to release adrenocorticotropic hormone
  3. stimulates adrenal glands on kidneys to release corticosteriods (cortisol & other hormones)
  4. sterols interact with organs controlling basic physiology of the body incl brain and immune system
20
Q
A

Health psychology (2 decks)

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