Human Organisation And Homeostasis Flashcards
1
Q
Anatomy relates to?
A
Body structure e.g location, shape, composition
2
Q
Physiology relates to?
A
Body function e.g how things work, processes, mechanisms
3
Q
Levels of structural organisation (6 points)
A
- chemical
- cellular
- tissue
- organ
- organ systems
- organism
4
Q
What is homeostasis?
A
The maintenance of a relatively constant internal environment
5
Q
How is homeostasis achieved?
A
Through feedback systems
6
Q
What are the two feedback systems?
A
Positive and negative
7
Q
What are the components of feedback systems (7 points)
A
- stimulus (produces change)
- receptor (detect change)
- sensory/afferent pathway
- control centre (measures degree of change against a set point)
- motor/efferent pathway
- effector (responds to change)
- response
8
Q
What do negative feedback systems do?
A
Reverse the stimulus
9
Q
What do positive feedback systems do?
A
Enhance the stimulus
10
Q
Which feedback system is most common in the body?
A
Negative
11
Q
What are some examples of positive feedback systems (3 points)?
A
- blood clotting
- childbirth
- breastfeeding
