Homeostasis

Question 1

_______ is the condition wherein steady state is regulated inside the organism for it to adapt to internal and external changes. This is important for survival. Once ______ is disrupted, the organism may experience a disorder that might affect its normal functions.

Answer 1

Homeostasis

Question 2

_____ is the physiological consistency of the body despite external fluctuations. All complex multicellular organisms maintain a stable internal environment using their organ systems.

Answer 2

Homeostasis

Question 3

Homeostasis in a general sense refers to ________ . It is the body’s attempt to maintain a constant internal environment. Maintaining a stable internal environment requires constant monitoring and adjustments as conditions change.

Answer 3

stability, balance or equilibrium

Question 4

The adjustment of physiological systems within the body is called ______ ______

Answer 4

homeostatic regulation.

Question 5

The body works at a certain range of conditions (such as blood glucose level, body temperature and blood pH). _____ normally disrupt these conditions and the body must try to return the conditions back to normal.

Answer 5

Diseases

Question 6

The homeostatic control has three components:

Answer 6

Receptor
Center of control
Effector

Question 7

A ____ (sense organ) to detect a change

Answer 7

Receptor

Question 8

A ________ (the brain or the spinal cord) that will process and integrate what is happening

Answer 8

center of control

Question 9

An ____ (muscle cells or organs/ glands) to produce a response appropriate to the change.

Answer 9

effector

Question 10

When a change of variable occurs, there are two main types of feedback to which the system reacts:

Answer 10

Negative feedback & Positive feedback

Question 11

a reaction in which the system responds in such a way as to reverse the direction of change.

• Thermoregulation
• CO2 Concentration
• Blood sugar level

Answer 11

Negative Feedback

Question 12

a response occurs to amplify the change in the variable. (This has a destabilizing effect, so does not result in homeostasis.

is less common in naturally occurring systems than negative feedback, but it has its applications.)

a. For example, in nerves, a threshold electric potential triggers the generation of a much larger action potential.
b. Blood clotting
c. Events in childbirth

Answer 12

Positive feedback