BCHP PT 2 - HOMEOSTASIS Flashcards Preview

T1 PHYSIOLOGY > BCHP PT 2 - HOMEOSTASIS > Flashcards

Flashcards in BCHP PT 2 - HOMEOSTASIS Deck (18):
1

Define Homeostasis.

Ongoing process keeping internal environment within limits to function

2

Describe a Feedback System/Loops.

Cycle of events that monitor/evaluate/change/re-monitor/re-evaluate the internal environment

3

Define Controlled Condition.

Varible being monitored

4

Define Stimulus.

Disruptions/changes in the controlled condition

5

What are the components of the Feedback System/Loops?

- Sensor/Receptors
- Transmission Pathways
- Control Centre
- Effector

6

Describe the Sensor/Receptor Component.

Monitors changes - sends info to Control Centre

7

Describe the Control Centre Component.

Evaluates/determines responses/sends commands if needed to Effector

8

Describe the Effector Component.

Produces response to a given stimulus - changing controlled condition

9

Describe the Transmission Pathways.

Nervous and blood vessel pathway relaying message between the Feedback System components

10

Physiological Feedback Systems/Loops are either _______ or _______.

Negative - Positive

11

Describe the Negative Feedback System/Loop.

The predominant system that reverse changes in the internal emvironment

12

Describe the Positive Feedback/Loop.

Strengthens changes in the internal environment

13

Which System/Loop is stable and unstable?

Negative - Stable
Positive - Unstable

14

Define 'Adaptation'.

Adjustment of an organism to its environment

15

Define 'Compensation'.

Adjustment of an organism to counterbalance a defect

16

If Homeostasis is Mildly affected...

Unnoticed symptoms occur

17

If Homeostasis is Moderately affected...

Disease state occur

18

If Homeostasis is Severely affected...

Possible death occur