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Biopsych
Nervous+Endocrine
A03
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Created by
jaya
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Cards (21)
What systems work together to control vital functions in the body?
The
endocrine
and
nervous
systems
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How does the speed of the endocrine system compare to the nervous system?
The endocrine system acts
more
slowly
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What do various glands in the body produce?
Hormones
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How do hormones affect cells in the body?
They affect any cell with a
receptor
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What is a consequence of hormones affecting multiple body organs?
It leads to diverse and powerful
responses
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What hormone does the thyroid gland produce?
Thyroxine
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What effect does thyroxine have on the heart?
It increases
heart rate
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How does thyroxine affect metabolic rates?
It increases metabolic rates
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What does an increase in metabolic rates affect?
It affects
growth rates
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What is the key endocrine gland in the body?
The
pituitary gland
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Why is the pituitary gland called the 'master gland'?
It
controls
hormone
release
from other
glands
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How do the endocrine system and ANS work together during stress?
They activate the
fight or flight response
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What part of the brain activates the pituitary gland during stress?
The
hypothalamus
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What happens to the ANS during a stressful event?
It shifts from
parasympathetic
to sympathetic
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What hormone is released from the adrenal medulla?
Adrenaline
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What physiological changes does adrenaline trigger?
Increased
heart rate
and
arousal
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What type of response is triggered when a threat is detected?
An
acute
and
automatic
response
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How does the parasympathetic nervous system act after a threat has passed?
It returns the body to its
resting state
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What is the role of the parasympathetic nervous system in relation to the sympathetic system?
It acts as a
'brake'
to reduce activities
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What are the physiological changes associated with the sympathetic response?
Increased heart rate
Dilated pupils
Increased blood flow to muscles
Decreased digestion
Increased energy availability
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What are the differences between the sympathetic and parasympathetic nervous systems?
Sympathetic:
Activates
fight or flight response
Increases heart rate and energy
Parasympathetic:
Promotes
rest and digest
Decreases heart rate and conserves energy
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