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Terminolgy and Problem Sets
6
Physiology
Undergraduate 4
10/08/2014

Additional Physiology Flashcards

 


 

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Term
Mechanistic Explanation
Definition

A way of explaining that explains in terms of their causes

Ex. Since A plus B equals C, B must equal C minus A. ( NOT just B equals C minus A)

Term
Homeostasis
Definition
When the variable stays relatively constant operating in the same way- the system looks like a ungulating curve in the same direction
Term
Allostasis
Definition

When the system operates in the same way but the variable can operate at differet variables

Ex. Fever:the set point changes, but the body system operates in the same way, just at a higher temperature

Term
Negative Feedback Loop
Definition

This feedback loop causes a stabalizing effect. If you are inside at regular body temperature and then you walk outside in the cold your bady will try to regualte your temperature by bringing it back up. A cycle in the opposite direction. When your trying to bring the system back to homeostasis or rather "stabalized."

 

Also- you know when there is an odd number of negative signs in the loop

Term
Positive Feedback Loop
Definition

this feedbcak loop creates and continues the system moving in the same direction. Ususally accelarates the process, a self- amplifying cycle in the same direction.

 

Also- you know when there is an even number of negative signs in the loop

Term
Hypothalamus
Definition
[image]A region in the fore brain that coordinates both the autonomic(involuntary or unconscious) nervous system and the activity of the pituitary, controlling body temperature, thirst, hunger, and other homeostatic systems, and involved in sleep and emotional activity
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