Homeostasis

Question 1

What is homeostasis and what conditions are maintained by it

Answer 1

Maintenance of an organisms internal environment
Body temp
Glucose concentration
Salt concentration
Blood Pressure
Carbon dioxide concentration

Question 2

Standard Response Pathway

Answer 2

Stimulus-Receptor Communication pathway-effector-response

Question 3

What are sensory receptors

Answer 3

Monitor changes in the external and internal environments
Example: temp receptors in skin

Question 4

Effector Cells

Answer 4

Bring about a response
Example: Muscle cell contracting or gland producing hormone

Question 5

Negative Feedback

Answer 5

Receptors detect when a level is too high or too low and level is brought back to the optimum
Example: Body temperature

Question 6

Positive Feedback

Answer 6

Some changes trigger a positive feedback mechanism which amplifies the change
Example: Childbirth where oxytocin stimulates uterine contractions that get larger as pregnancy goes on