introduction Flashcards
1
Q
what is homeostasis
A
- remaining the same
- refers to the constant stable internal environment despite the changing external environment
2
Q
how is homeostasis achieved
A
the body must monitor the internal conditions constantly
3
Q
what is a disease
A
the inability to maintain hemostasis
4
Q
what is a regulatory mechanisn
A
- steps and processes that are engaged the maintain homeostasis
- response to a stimulus
5
Q
what are the regulation mechanisms
A
negative feedback and positive feedback
6
Q
what is a stimulus
A
- a detected change of a variable in the environment
7
Q
what is a response
A
- activity that occurs as a result of a stimulus
- result of the regulatory mechanism
8
Q
what is a negative feedback response
A
- response that corrects the stimulus
9
Q
what is a positive feedback response
A
- response that amplifies the stimulus
10
Q
what are the components of a negative feedback response in order
A
- receptor (sensor)
- afferent path
- control center
- efferent path
- effector
11
Q
what is a receptor
A
- sensor
- detects change in the environment
12
Q
what is an afferent path
A
- sensory or incoming
- carries sensory info to the control center
13
Q
what is the control center
A
- receives and processes info
- makes a decision
- sends a command
14
Q
what is an efferent path
A
- motor or outgoing
- carries command to effector
15
Q
what is an effector
A
- muscle or gland that makes a response
