Homostasis Flashcards
(65 cards)
What is homeostasis
It’s a process of maintaining a stable internal environment in a result if internal and external conditions
What dose our body do to regulating our body
Automatic control
What are the 3 main automatic control systems
Receptors which detect a change for example a rise in temperature
Coordination centres eg brain spinal cord
Which interpolate that change
Effectors which carry. Out the change
Muscles or glands that release hormones
What dose are nervous. Systems do.
They are very fast a paecise
It sends electricity impulses through nerves
Which allows us to respond to things very quickly
What dose the endocrine system do
Relay on hormones small chemical into the blood stream
They only affect certain cells
What is the endocrine system generally
Slower longer lasting and more generalised
What is the negative feedback
Whenever of something gets to high like the levels of Glucose negative feedback decreases it again back. To normal
It the level is to low negative feedback will being it high again
Negative feedback when we walk into a cold room
The low-temperature will be detected by the receptors such as in our skins and then I nervous system now send impulses two coordination centres E.g. brain spinal cord these interpret the information and send another signals to the effectors E.g. our muscles which can carry useful responses like shivering what time does shivering increase our body temperature going back to normal
What are the 4 things we need to regulate in our body
TWIG
temperature water ions glucose
Mechanisms our body uses warm up near our skin called
Vasoconstriction this heat energy is lost to our surroundings we also contract arrector muscles which make a hair stand on end
Cool down mechanisms our body uses
The arrector muscles relax
The blood expands vasodilate
Produce sweat
what is blood glucose concentration
It’s it’s a fancy way of describing them of sugar in the blood stream
Why do we need a contract amount of sugar in our blood
So our cell has a constant amount of glucose that they can use for respiration
Controlling glucose levels
If you had a big meal that contains lots of carbohydrates, it will be broken down into your digestive system down to glucose into your blood stream
We Complete this in a graph to show up blood glucose levels changed with the time the spike in the graph shows as it will cost is dissolved into the blood. This advice is from the pancreas. It release hormone called insulin then will flood to the blood steam which sells the sauce to take on some of the glucose
To form glycogen from liver and muscles to decrease
What is glucagon
A homone
Fix low levels of glucose )
Glucagon if a blood glucose top Sulo frog sample, if you skip breakfast then a pancreas will detect the slow concentration of blood glucose and release glucagon to the bloodstream which to lots of different cells a break it down
What happens if your glucose levels get too high what dose it release
Insulin cause. It to decrease again
If your glucose levels drop to low what. Is released
Glucagon which causes it to increase again
Type one diabetes
Come in childhood or teenage years but is lifelong for some reason, your Parkrun start releasing insulin Olive, make sure you turn your amounts wish to have to inject herself of insulin we’re still brings down the glucose levels after meal
Type 2 diabetes
Mainly happens to all people, but not have a bad healthy diet which of assistance to insulin and other words don’t respond to insulin they cells won’t take any more glucose from the blood streams given insulin as a treatment wouldn’t help
What can help the 2 diabetics
Healthy low fat diet and regular exercise
What is the central nervous system made out of
Brain and spinal cord
What takes place in the central nervous system
Thinking
What dose the central nervous system takes in
Sensory information
