Homeostasis 9/9/25
Thermo Regulation
If Thermoregulation
does not work
hyperthermia too hot
-
hypothermiat too cold
+Birds & mammals regulate body temperature
Bird between
+
39-42
Mammals between 36-39
+
Metabolism
In
-
cooler environment body lose heats the peripheral
thermoreceptor stimulate the
hypothalamus to increase
metabolic rates
) hypothalamus stimulates
pituitary gland
2)
pituitary glandrelease TSH to stimulate thyroid gland
3) thyroid gland produce hormone called
thyroxin->increase
metabolic of
rate
body cell -> more heat
+)
negative feedback loop, release
of TSH decreased & stopped
level of thyroxin if too
high
, when
body temperature increases, signals from peripheral &
-
Central thermoreceptor the
stop
hypothalamus from producing
+ SH-
Thermoregulation in human
Cold:
to
+shivering generate heat
+ hairstandup trap heat & insulate
Warm:
hair lies
-
flat
+Sweat, evaporates & cools
Circulatory System
smooth muscle of arterie
vasodilation:
widens bloodvessel close
bring to skin
heat lost
via conduction & covection
Vasoconstriction:reduce flow
blood in peripheral bloodvessel
keep blood close to core, vital & conserving
heat
Metabolic waste from body
+CO2 ->
respiratory acidosis if removed
not
+UREA -> Ammonia is toxic
, Kidney & Osmoregulation
Regulation of & solute concentration of
body
+ water
fluid
Kidney function:
+
Regulation of water &iou balance
+
Removal of toxin & metabolic waste
product
Production
+
of hormones & control of blood
'pressure
Nephron
functional unit of
+basic the
kidney
+
The neuphron is a long tube which starts the
at
Bowman's capsule
+ ends at
collecting duct which drains into renal pelvis
Each contain 1 million
+
kidney nephrons
Thermo Regulation
If Thermoregulation
does not work
hyperthermia too hot
-
hypothermiat too cold
+Birds & mammals regulate body temperature
Bird between
+
39-42
Mammals between 36-39
+
Metabolism
In
-
cooler environment body lose heats the peripheral
thermoreceptor stimulate the
hypothalamus to increase
metabolic rates
) hypothalamus stimulates
pituitary gland
2)
pituitary glandrelease TSH to stimulate thyroid gland
3) thyroid gland produce hormone called
thyroxin->increase
metabolic of
rate
body cell -> more heat
+)
negative feedback loop, release
of TSH decreased & stopped
level of thyroxin if too
high
, when
body temperature increases, signals from peripheral &
-
Central thermoreceptor the
stop
hypothalamus from producing
+ SH-
Thermoregulation in human
Cold:
to
+shivering generate heat
+ hairstandup trap heat & insulate
Warm:
hair lies
-
flat
+Sweat, evaporates & cools
Circulatory System
smooth muscle of arterie
vasodilation:
widens bloodvessel close
bring to skin
heat lost
via conduction & covection
Vasoconstriction:reduce flow
blood in peripheral bloodvessel
keep blood close to core, vital & conserving
heat
Metabolic waste from body
+CO2 ->
respiratory acidosis if removed
not
+UREA -> Ammonia is toxic
, Kidney & Osmoregulation
Regulation of & solute concentration of
body
+ water
fluid
Kidney function:
+
Regulation of water &iou balance
+
Removal of toxin & metabolic waste
product
Production
+
of hormones & control of blood
'pressure
Nephron
functional unit of
+basic the
kidney
+
The neuphron is a long tube which starts the
at
Bowman's capsule
+ ends at
collecting duct which drains into renal pelvis
Each contain 1 million
+
kidney nephrons
