65643
Descrição
Mapa Mental por Alesha Oconnor, atualizado more than 1 year ago
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Criado por Alesha Oconnor
mais de 11 anos atrás
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homeostasis
- Is maintaining a stable internal enviroment
- Conditions in your body need to be kept stable, for cells to fuction properly
- Conditions in your body need to be kept stable, for cells to fuction properly
- Osmoergulation
- Regulating water conent, need a balance between the water you gain and loose
- Gain- drink, food,respiration. Loose- pee,sweat,breath out.
- Gain- drink, food,respiration. Loose- pee,sweat,breath out.
- Regulating water conent, need a balance between the water you gain and loose
- Thermoregulation
- regulating body temperature, getting rid of excess body heat when youre hot,but retain when the enviroment is cold
- regulating body temperature, getting rid of excess body heat when youre hot,but retain when the enviroment is cold
- Blood glucose
- regulating a steady level of glucose
- regulating a steady level of glucose
- Thermoregulation
- all enzymes work best at 37
- when receptors detect you're too hot
- Erector muscles relax, so hairs lie flat
- lots of sweat (water+salt) is produced. when sweat evaporates it transferes heat from
your skin into the enviroment cooling you down.
- blood vessels close to the surface of the skin dilate(widen).
- blood vessels close to the surface of the skin dilate(widen).
- lots of sweat (water+salt) is produced. when sweat evaporates it transferes heat from
your skin into the enviroment cooling you down.
- Erector muscles relax, so hairs lie flat
- When receptors dectect you're too cold
- Erector muscles contract. Hairs stand up to trap an instulating layer of air which helps keep us warm.
- very little sweat produced
- Blood vessels near the surface of the skin constrict. so less blood near the surface, so less heat is transferred to the surroundings
- Blood vessels near the surface of the skin constrict. so less blood near the surface, so less heat is transferred to the surroundings
- very little sweat produced
- Erector muscles contract. Hairs stand up to trap an instulating layer of air which helps keep us warm.
- all enzymes work best at 37
- Hypothalamus
- part of the brain, with receptors that are sensitive to blood temperature in the brain
- also recieves impulses from receptors in the skin that provides info about skin temperature.
- also recieves impulses from receptors in the skin that provides info about skin temperature.
- body temp is regulated by this
- when the hypothalamus detects a change, it causes a response in the dermis
- part of the brain, with receptors that are sensitive to blood temperature in the brain
- there are two ways that signals can be sent around the body, nerves or sloooow hormones
- Hormoones are chemical messengers which travel in the blood to activate target cells
- hormones are chemicals produced in glads called endocrine glands, travels in the blood and affect particular cells in
particular places
- the affected cells are called target cells, they have the right receptors to respond to that hormone, an organ with target cells is a target organ
- they travell at the speed of blood
- Enter text here
- Enter text here
- they travell at the speed of blood
- the affected cells are called target cells, they have the right receptors to respond to that hormone, an organ with target cells is a target organ
- hormones are chemicals produced in glads called endocrine glands, travels in the blood and affect particular cells in
particular places
- Hormoones are chemical messengers which travel in the blood to activate target cells
- Glucose is needed by cells for respiration. It is important that the
concentration of glucose in the blood is maintained at a constant level.
- How glucose is regulated
- Too high glucose level-insulin secreted into the blood, liver converts glucose into glycogen, then
glucose lever increases
- Too low glucose level- insulin not secreted into the blood, liver does not turn glucose into
glycogen, glucose level goes up
- Too high glucose level-insulin secreted into the blood, liver converts glucose into glycogen, then
glucose lever increases
- How glucose is regulated
- Type 1 diabeties - lack of insulin ( the pancreas produces little or no insulin
- can be controlled in two ways..
- Avoiding foods rich in carbohydrates, i.e sugars which make glucose levels rise rapidly
- injecting insulin into the blood at meal times, into
subcutaneous fat
- This will make the liver remove glucose,
- insulin is converted into glycogen in the liver, too stop the glucose levels getting too high
- This will make the liver remove glucose,
- Avoiding foods rich in carbohydrates, i.e sugars which make glucose levels rise rapidly
- The amount of insulin that needs to be injected depends on..
- persons diet, healthy diet reduces the amount of insulin
- Regular exercise
- persons diet, healthy diet reduces the amount of insulin
- can be controlled in two ways..
- Type 2 diabetes- resistant to insulin
- Can be controlled by eating a healthy diet, physical activity + weight loss if needed.
- obese people have an increased risk of developing type 2 diabetes. (bmi) of over 30. BMI= body mass index divided by height.
- obese people have an increased risk of developing type 2 diabetes. (bmi) of over 30. BMI= body mass index divided by height.
- Can be controlled by eating a healthy diet, physical activity + weight loss if needed.
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