Fisiologi

Question 1

Definition of physiology

Answer 1

Study of normal functioning of a living organism and its components parts (chemical and physical processes)

Question 2

Pathology or patophysiology

Answer 2

Fungsi saat ABNORMAL

Question 3

Jangkauan physiology

Answer 3

Molekul sampai populasi

Molekul
Cells
Tissues
Organs
Organ systems
Organisms
Populations or one species

Question 4

Homeostasis

Answer 4

Maintenance of nearly constant conditions in the internal environment

Question 5

Homeo meaning

Answer 5

Similar (internal env maintained within a range of values)

Question 6

Stasis

Answer 6

Condition not a state

Question 7

Factors homeostatically regulated

Answer 7

1. Concentration of nutrients
2. Concentration of O2 + CO2
3. Concentration of waste products
4. pH
5. Concentration of water, salt, and other electrolytes
6. Volume and pressure
7. Temperature

Question 8

3 components control system

Answer 8

1. Input signal
2. Controller / integrating center
3. Output signal
4. Response

Question 9

Intrinsic (local controls) vs extrinsic (systematic controls)

Answer 9

Intrinsic: built into in an organ
E.g. skeletal muscle uses up most O2 when exercising so chemical change directly on smooth muscle causing it to relax and dilate the vessels which results in more blood flow to the muscle more O2

Extrinsic: regulatory mechanisms initiated outside the organ to alter organ’s activity -> more complex control systems to maintain homeostasis.
2 major regulatory systems: nervous n endocrine systems

Question 10

Homeostasis control mechanisms

Answer 10

Negative feedback: rise in body temp -> sweating, low body temp -> shiver generate heat

Positive feedback: increase oxytocin for contractions during birth -> triggers more oxytocin to be released

Question 11

Positive feedback requires feedback cycle to be shut off by an outside factor

Answer 11

Yes