Physiological Principles (lec 1)

Question 1

What is meant by “physiological processes are usually regulated”?

Answer 1

ability to cope with changing conditions

Question 2

What is a conformer?

Answer 2

internal conditions influenced by external conditions

Question 3

What is a regulator?

Answer 3

internal conditions remain constant despite external conditions

Question 4

What is homeostasis?

Answer 4

maintenance of external conditions despite external changes

Question 5

How is homeostasis maintained?

Answer 5

through positive and negative feedback loops that act antagonistically to one another

Question 6

What is meant by the integrative nature of physiology?

Answer 6

operates at various levels (organ, tissues, cells etc.)

Question 7

Physiology is based on mechanisms or…

Answer 7

how things are accomplished at various levels

Question 8

What are the 4 unifying themes of physiology?

Answer 8

1. Processes obey the laws of physics an chemistry
2. Processes are regulated
3. Processes are shaped by evolution
4. Integrative

Question 9

In what ways doe physiological processes obey the laws of physics and chemistry?

Answer 9

• function is linked to form
• interactions are based on thermodynamics and kinetics
• involvement of electrical laws