Physiology Introduction - Lecture 1 Flashcards
What is Physiology?
Physiology is the study of the function of the human body and the integrative mechanisms that
control them at the level of: Cells, tissues, organs, body systems and the whole body
What are tissues?
A tissue is a group of cells with a similar structure and specialised function.
What are Body Organs?
Body Organs are made up of two or more types of primary tissues that function together to
perform a particular function
What are Body Systems?
Body systems are made up groups of organs that perform related functions and work together to
achieve a common goal.
What is Homeostasis?
Homeostasis is the maintenance of steady states within our bodies by coordinated
physiological mechanisms.
Where in the cell does most of the physiological control occur?
The Cell Membrane
Where is a therapeutic effect seen in the cell?
The Cell Membrane
What are the three thing a Homoeostatic system must do ?
Sense
Integrate
Make adjustments
What are Intrinsic controls?
Local controls that are inherent in an organ
What are Extrinsic Controls?
Regulatory mechanisms initiated outside an organ (accomplished by
endocrine and nervous systems)
What is a Feedforward System?
Feedforward systems make responses in anticipation of change. They normally act in
combination with negative feedback.
What is a Feedback System ?
Feedback systems refers to response made after a change has been detected.
What are the types of Feedback System?
Negative Feedback
Positive Feedback
What is the effect of a negative Feedback system?
Negative feedback systems oppose initial change
What is required for a negative feedback system?
Sensor
Control Centre
Effectors
