Lecture 1 - Module Overview And Introduction To Homeostasis Flashcards
What is exercise physiology?
Concerned with the way the body responds to exercise
Responses/adaptation to exercise in humans/animals
Apply knowledge to improve performance/health (sport/exercise/health(illness)
Definition of homeostasis
Maintenance of a constant or unchanging internal environment
- Walter Cannon
What is homeostasis
The maintenance of a dynamic constancy
What is exercise in relation to homeostasis, and why?
A threat
As exercise causes core body temperature to rise, so the body must work harder to bring it back down
Homeostatic system
Look at diagram on slides on blackboard
What is hypothermia
A core body temperature that is too low
What hyperthermia
A core body temperature that is too high
How does homeostasis work
Via negative feedback
What is negative feedback
Planned corrective behaviour which brings back a system to baseline whenever it deviates from it
How does the body communicate
Via the nervous system and the endocrine system
How does exercise effect homeostasis? (Multiple ways)
Produce heat Reduce glucose stores Impact sodium balance via dehydration Use oxygen Produce CO2 Produce Hydrogen ions (impacting the acid balance)
Definition of steady state
Balance between the demands placed on the body by exercise and the physiological response to those demands
Key points about homeostasis
Key fundamental concept
The dynamic consistency of the internal environment
Regulated via negative feedback
Exercise is a threat to homeostasis
What is the process of maintaining homeostasis when there is a change
Sensors detect the change
Relay this information to the control centre
Control centre then sends information to the effectors to initiate a change
