What is homeostasis?
The ability of an organism to maintain its internal environment , despite changes to its internal or external environment.
How does it work?
Feedback pathway keep specific organs & Systems in communication with each other needed to keep normal body ranges.
Examples of Homeostasis:
-Body Temperature
-Blood Pressure
-O2 and CO2 Concentration
-osmoregulation(H2O balance)
-Blood Glucose
A)Negative Feed back Loops
The product of this pathway inhibits or shuts down, the original signal
MOST COMMON FEEDBACK LOOP!
The ability of an organism to maintain its internal environment , despite changes to its internal or external environment.
How does it work?
Feedback pathway keep specific organs & Systems in communication with each other needed to keep normal body ranges.
Examples of Homeostasis:
-Body Temperature
-Blood Pressure
-O2 and CO2 Concentration
-osmoregulation(H2O balance)
-Blood Glucose
A)Negative Feed back Loops
The product of this pathway inhibits or shuts down, the original signal
MOST COMMON FEEDBACK LOOP!
B)Positive Feedback Loops
The product of this pathway simulates or turns up, the original signal
LESS COMMON PATHWAY!
The product of this pathway simulates or turns up, the original signal
LESS COMMON PATHWAY!
Dueling Hormones
Insulin:
(Produced by B- cells of the pancreas)
-Released into circulatory system when blood glucose is high.
-Facilitates the transport of glucose into target cells.
Glucagon:
-Released into circulatory system when blood glucose is high.
-Facilitates the transport of glucose into target cells.
Glucagon:
(Produced by cx-cells of the pancreas)
-Released into circulatory system when blood Glucose is low.
-Signals liver to break down glycogen into simple glucose.
Dueling Mechanism
-Thermalregulation: Sweating (Cooling down) Vs Shivering (warning)
-Blood Pressure: Vascontriction Vs Vasodilation
-Released into circulatory system when blood Glucose is low.
-Signals liver to break down glycogen into simple glucose.
Dueling Mechanism
-Thermalregulation: Sweating (Cooling down) Vs Shivering (warning)
-Blood Pressure: Vascontriction Vs Vasodilation