Homeostasis

Question 1

HOMEOSTASIS
Four components of homeostatic mechanisms?

Ex. Increasing body temperature(stimulus) receptors sensing it (sensors) blood warmer then set point, activates heat loss in hypothalamus(integrator) sweat glands activated (effector) body cools (response)

Answer 1

Stimulus, change in environment
Sensor, detects change in environment
Integrator, con pares condition to set point
Effector, acts to return to optimal state
Response, goal achieved

Question 2

HOMEOSTASIS
Negative feedback? Good thing!
Ex. Household thermostat

Positive feedback?
Ex. Birthing process, progesterone levels drop and contractions start, contractions release oxytocin causes stronger contractions

Answer 2

Conditions are returned to original state

Reinforces change, less common then negative feedback in body

Question 3

HOMEOSTASIS 
Thermoregulation?
-endothermic maintain constant temp despite surroundings 
-hypothalamus is our thermostat
Response to heat? 
Response to cold?

Answer 3

The maintenance of body temperature

Brains sense increase temperature, hypothalamus sends signals to sweat glands to start sweating and blood vessels to dilate

Hypothalamus sends signal to organs/tissue to increase temperature and blood vessels contract, muscle around hair follicles contracts to trap air near skin, shivering
After long exposed to cold brown fat

Question 4

HOMEOSTASIS
Homeostasis is? Humans operate best at? Temp? Blood sugar? Blood pH?

Systems involved in maintaining homeostasis?
What are homeostatic mechanisms?

Answer 4

Normal functions state of the body in which internal conditions are kept within a range suitable for life processes

37 degree Celsius, 0.1%, 7.35

Endocrine, excretory, reproductive, musculoskeletal, nervous, integumentary

Monitor internal/external conditions and changes body undergoes to balance