Thursday, September 29, 2011
Friday, September 16, 2011
Welcome back with.....Homeostasis!
Well it's back to school for another year! And it's time for more Blog posts! This year I am in Anatomy and the first thing were talking about Homeostasis!
Well today in class we watched a video about a girl named Martina. We joined Martina as she ran a 42 kilometer marathon. As we watched Martina run we watched how the different parts in her body worked to stay in balance or in homeostasis.
Martina's body started working even before she started running the race. Her adrenal glands starting releasing adrenaline which made her heart start pumping.
A little after the race started you could hear Martina breathing harder. Inside her body her muscles were starting to work harder. Her muscles threw everything off balance. Her muscles started using more oxygen and blood so that had to make the heart and lungs work harder to supply oxygen to the blood stream.
As Martina worked harder she started to lose the glucose in her body. She was running out of energy. The liver had to start working harder to restore glucose and her body began to break down fat. During her race Martina was losing a lot or water threw sweating. She was drinking a lot of water but her kidneys were also working as regulators of water loss.
Throughout the race we saw how the different muscles in Martina's body worked together to keep her body in balance. That's what homeostasis is: keeping the body in perfect balance.
There are different variables that produce changes in the body.(Martina running out of energy). There are three interdependent components of control mechanisms in homeostasis.
-the first is a Receptor. The receptor monitors the environments and responds to changes (stimuli).
-the second is a Control Center. The control center determines the set point at which the variable is maintained.
-The Effector is the third mechanism. This provides the means to respond to the Stimuli.
So you are probably wondering how this all works together. Well when the Stimulus notices when a variable produces a change the Receptor detects the change. Then the information is sent along a pathway that takes it to the control center. Then the information is set on a different pathway that leads to the Effector. The response of the effector gives information to influence the magnitude of the Stimulus and it returns the variable into it's perfect state of Homeostasis.
Sometimes in Homeostasis you have something called negative feedback. In these systems the output shuts off the original stimulus. An example of this is the regulation of blood glucose levels. There is also something called positive feedback. In this system the output enhances or exaggerates the original stimulus. An example of this is the regulation of blood clotting.
Well I hope you enjoyed my first blog for the year! Be on the lookout for more!
Well today in class we watched a video about a girl named Martina. We joined Martina as she ran a 42 kilometer marathon. As we watched Martina run we watched how the different parts in her body worked to stay in balance or in homeostasis.
Martina's body started working even before she started running the race. Her adrenal glands starting releasing adrenaline which made her heart start pumping.
A little after the race started you could hear Martina breathing harder. Inside her body her muscles were starting to work harder. Her muscles threw everything off balance. Her muscles started using more oxygen and blood so that had to make the heart and lungs work harder to supply oxygen to the blood stream.
As Martina worked harder she started to lose the glucose in her body. She was running out of energy. The liver had to start working harder to restore glucose and her body began to break down fat. During her race Martina was losing a lot or water threw sweating. She was drinking a lot of water but her kidneys were also working as regulators of water loss.
Throughout the race we saw how the different muscles in Martina's body worked together to keep her body in balance. That's what homeostasis is: keeping the body in perfect balance.
There are different variables that produce changes in the body.(Martina running out of energy). There are three interdependent components of control mechanisms in homeostasis.
-the first is a Receptor. The receptor monitors the environments and responds to changes (stimuli).
-the second is a Control Center. The control center determines the set point at which the variable is maintained.
-The Effector is the third mechanism. This provides the means to respond to the Stimuli.
So you are probably wondering how this all works together. Well when the Stimulus notices when a variable produces a change the Receptor detects the change. Then the information is sent along a pathway that takes it to the control center. Then the information is set on a different pathway that leads to the Effector. The response of the effector gives information to influence the magnitude of the Stimulus and it returns the variable into it's perfect state of Homeostasis.
Sometimes in Homeostasis you have something called negative feedback. In these systems the output shuts off the original stimulus. An example of this is the regulation of blood glucose levels. There is also something called positive feedback. In this system the output enhances or exaggerates the original stimulus. An example of this is the regulation of blood clotting.
Well I hope you enjoyed my first blog for the year! Be on the lookout for more!
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