Podcast
Questions and Answers
What percentage of Earth's water is fresh and potentially suitable for drinking, food production, energy, and industrial uses?
What percentage of Earth's water is fresh and potentially suitable for drinking, food production, energy, and industrial uses?
- 0.7%
- 12%
- 97%
- 3% (correct)
How much water does it take to generate the food that the average Westerner consumes in one day?
How much water does it take to generate the food that the average Westerner consumes in one day?
- 3000 litres (correct)
- 1.6 bath tubs
- 12 bath tubs
- 400 litres
What has been warned to increasingly provide the basis for armed conflict?
What has been warned to increasingly provide the basis for armed conflict?
- Rainwater
- Sea water
- Groundwater
- Fresh water (correct)
Which country has threatened military action if the upper reaches of the Nile are dammed?
Which country has threatened military action if the upper reaches of the Nile are dammed?
What was the response of Israel when Syria attempted to divert the headwaters of the Jordan river in 1967?
What was the response of Israel when Syria attempted to divert the headwaters of the Jordan river in 1967?
Out of the world's population of 7 billion people, how many do not have easy access to fresh water?
Out of the world's population of 7 billion people, how many do not have easy access to fresh water?
What is the yearly cost of alcohol abuse/misuse in Australia?
What is the yearly cost of alcohol abuse/misuse in Australia?
What percentage of all violent offences are committed under the influence of alcohol?
What percentage of all violent offences are committed under the influence of alcohol?
How many Indigenous Australians have a higher rate of excessive alcohol consumption compared to non-Indigenous Australians?
How many Indigenous Australians have a higher rate of excessive alcohol consumption compared to non-Indigenous Australians?
What is the total number of deaths due to alcohol-related conditions in Australia yearly?
What is the total number of deaths due to alcohol-related conditions in Australia yearly?
How many people were verbally abused by alcohol-related offenders according to the yearly ABS victims of crime survey?
How many people were verbally abused by alcohol-related offenders according to the yearly ABS victims of crime survey?
What is the most common reason for referral to drug treatment services in Australia?
What is the most common reason for referral to drug treatment services in Australia?
What is the ranking of Australia in terms of per capita alcohol consumption?
What is the ranking of Australia in terms of per capita alcohol consumption?
During which period did alcohol consumption fall to a low of 2.5 liters per person?
During which period did alcohol consumption fall to a low of 2.5 liters per person?
What were some positives of alcohol consumption in Australia mentioned in the text?
What were some positives of alcohol consumption in Australia mentioned in the text?
What was the focal point of alcohol consumption during the 1800s?
What was the focal point of alcohol consumption during the 1800s?
What is the association of Australian national identity with alcohol consumption?
What is the association of Australian national identity with alcohol consumption?
What did alcohol consumption lead to in the early days of the colony for Indigenous Australians?
What did alcohol consumption lead to in the early days of the colony for Indigenous Australians?
At what water deficit does thirst typically ensue?
At what water deficit does thirst typically ensue?
What percentage of chronic psychiatric patients are polydipsic?
What percentage of chronic psychiatric patients are polydipsic?
In which desert did Sven Hedin experience intense relief after finding water?
In which desert did Sven Hedin experience intense relief after finding water?
What percentage of bodyweight in water can animals with SIP consume?
What percentage of bodyweight in water can animals with SIP consume?
Between what percentage of bodyweight in water deficit can dehydration cause death?
Between what percentage of bodyweight in water deficit can dehydration cause death?
How many people lacked access to safe drinking water as of 2017?
How many people lacked access to safe drinking water as of 2017?
What is the role of the insula cortex in the sensation of thirst?
What is the role of the insula cortex in the sensation of thirst?
What happens when water is directly placed into the stomach of a thirsty animal?
What happens when water is directly placed into the stomach of a thirsty animal?
Which area of the brain is suggested to be responsible for thirst?
Which area of the brain is suggested to be responsible for thirst?
What is the relationship between lack of salivary glands and normal drinking in animals and humans?
What is the relationship between lack of salivary glands and normal drinking in animals and humans?
What is the main function of specific cells in the hypothalamus mentioned in the text?
What is the main function of specific cells in the hypothalamus mentioned in the text?
What is the result of anaesthetising the mouth of thirsty dogs and humans?
What is the result of anaesthetising the mouth of thirsty dogs and humans?
What percentage of Earth's water is in the sea?
What percentage of Earth's water is in the sea?
How much water does it take to generate the food that the average Westerner consumes in one day?
How much water does it take to generate the food that the average Westerner consumes in one day?
Which region experienced a 'water flash-point' due to damming of the Nile's upper reaches?
Which region experienced a 'water flash-point' due to damming of the Nile's upper reaches?
What percentage of Earth's accessible fresh water resources represent 'fossil water', lakes, and rivers?
What percentage of Earth's accessible fresh water resources represent 'fossil water', lakes, and rivers?
How many people do not have easy access to fresh water out of the world's population of 7 billion people?
How many people do not have easy access to fresh water out of the world's population of 7 billion people?
What was the response of Israel when Syria attempted to divert the headwaters of the Jordan river in 1967?
What was the response of Israel when Syria attempted to divert the headwaters of the Jordan river in 1967?
What percentage of all violent offences are committed under the influence of alcohol?
What percentage of all violent offences are committed under the influence of alcohol?
How much does alcohol abuse/misuse cost yearly in Australia?
How much does alcohol abuse/misuse cost yearly in Australia?
What is the yearly number of deaths due to alcohol-related conditions in Australia?
What is the yearly number of deaths due to alcohol-related conditions in Australia?
What is the rate of excessive alcohol consumption in Indigenous Australians compared to non-Indigenous Australians?
What is the rate of excessive alcohol consumption in Indigenous Australians compared to non-Indigenous Australians?
What is the most common reason for referral to drug treatment services in Australia?
What is the most common reason for referral to drug treatment services in Australia?
How many people were verbally abused by alcohol-related offenders according to the yearly ABS victims of crime survey?
How many people were verbally abused by alcohol-related offenders according to the yearly ABS victims of crime survey?
What was the focal point of alcohol consumption during the 1800s in Australia?
What was the focal point of alcohol consumption during the 1800s in Australia?
What is the ranking of Australia in terms of per capita alcohol consumption?
What is the ranking of Australia in terms of per capita alcohol consumption?
What is the derivation of the word 'alcohol'?
What is the derivation of the word 'alcohol'?
What is the current alcohol consumption per person in Australia?
What is the current alcohol consumption per person in Australia?
What are some positives of alcohol consumption in Australia?
What are some positives of alcohol consumption in Australia?
What are some negatives of alcohol consumption in Australia?
What are some negatives of alcohol consumption in Australia?
What percentage of Earth's water is fresh and potentially suitable for drinking, food production, energy, and industrial uses?
What percentage of Earth's water is fresh and potentially suitable for drinking, food production, energy, and industrial uses?
At what water deficit does thirst typically ensue?
At what water deficit does thirst typically ensue?
What was the estimated number of deaths caused by waterborne diseases in 2017?
What was the estimated number of deaths caused by waterborne diseases in 2017?
What is the range of water deficit in terms of bodyweight that can cause death due to dehydration?
What is the range of water deficit in terms of bodyweight that can cause death due to dehydration?
What is Schedule Induced Polydipsia (SIP) capable of causing animals to consume in terms of bodyweight in water?
What is Schedule Induced Polydipsia (SIP) capable of causing animals to consume in terms of bodyweight in water?
What is the estimated number of people who lacked access to safe drinking water as of 2017?
What is the estimated number of people who lacked access to safe drinking water as of 2017?
What is the main function of specific cells in the hypothalamus mentioned in the text?
What is the main function of specific cells in the hypothalamus mentioned in the text?
What is the relationship between lack of salivary glands and normal drinking in animals and humans?
What is the relationship between lack of salivary glands and normal drinking in animals and humans?
What is the result of directly placing water into the stomach of a thirsty animal?
What is the result of directly placing water into the stomach of a thirsty animal?
What is the role of the insula cortex in the sensation of thirst?
What is the role of the insula cortex in the sensation of thirst?
What is the most likely central brain area responsible for thirst according to the text?
What is the most likely central brain area responsible for thirst according to the text?
What strongly correlates with water deficit according to the text?
What strongly correlates with water deficit according to the text?
What percentage of Earth's water is fresh and potentially suitable for drinking, food production, energy, and industrial uses?
What percentage of Earth's water is fresh and potentially suitable for drinking, food production, energy, and industrial uses?
How many liters of water does it take to generate the food that the average Westerner consumes in one day?
How many liters of water does it take to generate the food that the average Westerner consumes in one day?
What percentage of the world's population lacks easy access to fresh water?
What percentage of the world's population lacks easy access to fresh water?
What percentage of Earth's water is in the sea?
What percentage of Earth's water is in the sea?
What is the yearly cost of alcohol abuse/misuse in Australia?
What is the yearly cost of alcohol abuse/misuse in Australia?
Approximately how many people were verbally abused by alcohol-related offenders according to the yearly ABS victims of crime survey?
Approximately how many people were verbally abused by alcohol-related offenders according to the yearly ABS victims of crime survey?
What percentage of all violent offences are committed under the influence of alcohol?
What percentage of all violent offences are committed under the influence of alcohol?
What is the total number of deaths due to alcohol-related conditions in Australia yearly?
What is the total number of deaths due to alcohol-related conditions in Australia yearly?
Which area of the brain is suggested to be responsible for the sensation of thirst?
Which area of the brain is suggested to be responsible for the sensation of thirst?
What is the main role of specific cells in the hypothalamus mentioned in the text?
What is the main role of specific cells in the hypothalamus mentioned in the text?
What did the direct placement of water into the stomach of a thirsty animal result in, according to the text?
What did the direct placement of water into the stomach of a thirsty animal result in, according to the text?
How do peripheral systems, particularly in the kidneys, work in regulating thirst according to the text?
How do peripheral systems, particularly in the kidneys, work in regulating thirst according to the text?
What is the estimated number of deaths caused by waterborne diseases in 2017?
What is the estimated number of deaths caused by waterborne diseases in 2017?
At what water deficit does severe fatigue typically ensue?
At what water deficit does severe fatigue typically ensue?
What percentage of chronic psychiatric patients are polydipsic?
What percentage of chronic psychiatric patients are polydipsic?
What is the percentage of bodyweight in water that can cause death due to dehydration?
What is the percentage of bodyweight in water that can cause death due to dehydration?
What was the per capita alcohol consumption in Australia during the 1800s?
What was the per capita alcohol consumption in Australia during the 1800s?
What is the rank of Australia in terms of per capita alcohol consumption globally?
What is the rank of Australia in terms of per capita alcohol consumption globally?
What was the focal point of alcohol consumption during the 1800s in Australia?
What was the focal point of alcohol consumption during the 1800s in Australia?
What factors contribute to challenges for public health with the advent of pre-mixed drinks in Australia?
What factors contribute to challenges for public health with the advent of pre-mixed drinks in Australia?
Study Notes
The Science of Thirst: Understanding the Mechanisms Behind the Sensation
- Saliva levels in the mouth strongly correlate with water deficit
- Anaesthetising the mouth of thirsty dogs and humans alleviates thirst
- Directly placing water into the stomach of a thirsty animal does not alleviate thirst as effectively as drinking through the mouth
- Thirsty camels can drink 30% of their body weight in water in 10 minutes, long before physiological relief
- Lack of salivary glands does not hinder normal drinking in animals and humans
- The insula cortex plays a role in the subjective sensation of thirst
- The hypothalamus, particularly the median preoptic nucleus, is suggested as a central brain area responsible for thirst
- Specific cells in the hypothalamus are sensitive to variations in salt levels in blood plasma
- The hypothalamus controls the release of Antidiuretic Hormone (ADH) to regulate water retention
- Peripheral systems, particularly in the kidneys, work cooperatively and independently of the hypothalamus in regulating thirst
- The kidney detects changes in blood pressure and releases hormones that affect the CNS and drinking behavior
- Thirst results from a complex interplay of peripheral and central mechanisms, involving departures from set points triggering the sensation of thirst and drinking behavior
The Science of Thirst: Understanding the Mechanisms Behind the Sensation
- Saliva levels in the mouth strongly correlate with water deficit
- Anaesthetising the mouth of thirsty dogs and humans alleviates thirst
- Directly placing water into the stomach of a thirsty animal does not alleviate thirst as effectively as drinking through the mouth
- Thirsty camels can drink 30% of their body weight in water in 10 minutes, long before physiological relief
- Lack of salivary glands does not hinder normal drinking in animals and humans
- The insula cortex plays a role in the subjective sensation of thirst
- The hypothalamus, particularly the median preoptic nucleus, is suggested as a central brain area responsible for thirst
- Specific cells in the hypothalamus are sensitive to variations in salt levels in blood plasma
- The hypothalamus controls the release of Antidiuretic Hormone (ADH) to regulate water retention
- Peripheral systems, particularly in the kidneys, work cooperatively and independently of the hypothalamus in regulating thirst
- The kidney detects changes in blood pressure and releases hormones that affect the CNS and drinking behavior
- Thirst results from a complex interplay of peripheral and central mechanisms, involving departures from set points triggering the sensation of thirst and drinking behavior
Alcohol Consumption and Drinking Culture in Australia
- The lecture involves examining alcohol consumption, caffeine consumption, and the addictive nature of certain foods.
- The word "alcohol" derives from Arabic for "something subtle," with evidence of brewing dating back to the Neolithic period.
- Australian national identity is associated with heavy alcohol consumption, with the myth of the heavy drinking Australian being part of the national identity.
- Drinking in the early days of the colony was similar to that in most other Anglo-Saxon countries, with alcohol having devastating effects on Indigenous Australians.
- During the 1800s, the pub became the focal point of alcohol consumption, with Sydney having one pub for every 100 Sydneysiders in 1837.
- Australia is ranked 23rd in the world in terms of per capita alcohol consumption, with a shift from beer to wine and the advent of pre-mixed drinks.
- Positives of alcohol consumption in Australia include tax revenues averaging around 6 billion dollars per year, reducing cardiovascular deaths, and acting as a pleasurable experience.
- Negatives include a significant percentage of people drinking at a rate likely to cause harm and engaging in binge drinking, especially among the 20-29 age group.
- Alcohol was used as payment for labor, sexual favors, and entertainment for Indigenous Australians.
- During the 1900s, with urbanization and industrialization, alcohol consumption fell to a low of 2.5 liters during the Great Depression.
- Current alcohol consumption is around 9 liters per person, with variations across different regions and communities.
- The advent of pre-mixed drinks poses challenges for public health, especially with marketing and taste directed at novice and underage drinkers.
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Description
Test your knowledge of the intricate mechanisms behind the sensation of thirst with this quiz. Explore the role of saliva levels, brain areas, hormones, and kidney functions in regulating thirst and drinking behavior.
