ÉLITTmT3 Hiiumaa Endocrine System pg
37-55
LA the human
partners with nervous
system
whatisahor-mon.ee?
Dm chemical substance steroid
organic usually a protein but sometimes a
,
secreted by an
and carried blood
endocrine
gland in the stream to
target organs
where it
regulates metabolic reactions
Do not last
long t broken down
by enzymes
Endocrine Gland
arget Organ
:
M vascular ductless
, gland that secretes hormones
only affect certain cells
hormones which are carried to the blood stream ↳ contains receptor sites for specific hormone
to their
target organs
Dan
single gland / organ or scattered
Exo / Endo glands
!
Exocrine → secretions are carried in ducts
them Endocrine -
• no ducts ; secretions in bloodstream
Endocrine Glands in the
Body
ypo thalamus
Gland
:
Pituitary :
-
part of brain above
pituitary gland Dm Master Gland : chemical ordinator of
ADH and others
majority of other endocri
glands
Homo receptors detect low H2O levels • attached to
hypo amvs
by a short stalk
→ conserves H2O it
body is
dehydrated Hormones secre . :
• causes more H2O absorption in
kidneys ④
Thyroi-dstimm-ingho.ee thyroid gland :
=
thyroxine
F¥estimEghrr
④
:
Females aries ( formation
oogenesis i
→
egg
:
→ Males : testes (
sperm formation
spermatogene u
•
Luteinizing hormone : ovulation t corpus luteum
formation
• Prolactin : production of milk in
female maternal
mammary glands
* instinct
•
Adrenocorticotropic hormone ( ACTH )
↳ stimulates adrenal cortex
↳ secretes cortisone $ aldosterone
Interstitial cell hormone ( ICSH )
•
stimulating
↳ stimulates testes to secrete testosterone
• Growth / somatotrophio hormone ( GH / 5TH )
La skeletal 31 muscular
growth
promotes
- stimulates protein synthesis
, Growth Disorders
D.
hyper secretion : over secretion Dp hypo secretion -
-
under secretion
example example
Lan results in over development of the skeleton has underdevelopment of the skeleton
dwarfism
=
gigantism =
pituitary
= tumor in
pituitary gland very
-
-
rare •
Height -
-
91 -
122cm (body proportions normal)
not
mentally 5THdisabled but sexually immature
•
treated by genetically engineered
-
- bacteria
over secretion of GH
=
acromegaly TB
-
a
hand ,
thickening
face ,
of
feet
soft
bones
tissues =
enlarged
enlarged features / tongue
LB two lobes
Thyroid
( butterfly shape)
Gland
on either side of trachea ,
below
larynx
Hormone =
thyroxine
• iodine is essential for thyroxin production [ found in sea
salty seafood ]
↳ low iodine levels form
goitre may
=
Functions of
thyroxine :
Increases ( heat )
r
Promotes
basal
normal
metabolic rate
body =
controlling rate of cellular respiration
• heart
functioning
* Promotes normal functioning of nervous system [ increasing nervous
activity + sharpening /
alertness reflexes
]
Disorders :
Hypothyroidism = too little
w Adults
Myx oedema
-
- . children -
-
cretinism
blood pressure
L• mental physical
sluggishness ,
low ,
Las does
sexual
not
grow physically ,
immature
disabled
slow heart
respiratory rate
,
low
body temp development ,
mentally
37-55
LA the human
partners with nervous
system
whatisahor-mon.ee?
Dm chemical substance steroid
organic usually a protein but sometimes a
,
secreted by an
and carried blood
endocrine
gland in the stream to
target organs
where it
regulates metabolic reactions
Do not last
long t broken down
by enzymes
Endocrine Gland
arget Organ
:
M vascular ductless
, gland that secretes hormones
only affect certain cells
hormones which are carried to the blood stream ↳ contains receptor sites for specific hormone
to their
target organs
Dan
single gland / organ or scattered
Exo / Endo glands
!
Exocrine → secretions are carried in ducts
them Endocrine -
• no ducts ; secretions in bloodstream
Endocrine Glands in the
Body
ypo thalamus
Gland
:
Pituitary :
-
part of brain above
pituitary gland Dm Master Gland : chemical ordinator of
ADH and others
majority of other endocri
glands
Homo receptors detect low H2O levels • attached to
hypo amvs
by a short stalk
→ conserves H2O it
body is
dehydrated Hormones secre . :
• causes more H2O absorption in
kidneys ④
Thyroi-dstimm-ingho.ee thyroid gland :
=
thyroxine
F¥estimEghrr
④
:
Females aries ( formation
oogenesis i
→
egg
:
→ Males : testes (
sperm formation
spermatogene u
•
Luteinizing hormone : ovulation t corpus luteum
formation
• Prolactin : production of milk in
female maternal
mammary glands
* instinct
•
Adrenocorticotropic hormone ( ACTH )
↳ stimulates adrenal cortex
↳ secretes cortisone $ aldosterone
Interstitial cell hormone ( ICSH )
•
stimulating
↳ stimulates testes to secrete testosterone
• Growth / somatotrophio hormone ( GH / 5TH )
La skeletal 31 muscular
growth
promotes
- stimulates protein synthesis
, Growth Disorders
D.
hyper secretion : over secretion Dp hypo secretion -
-
under secretion
example example
Lan results in over development of the skeleton has underdevelopment of the skeleton
dwarfism
=
gigantism =
pituitary
= tumor in
pituitary gland very
-
-
rare •
Height -
-
91 -
122cm (body proportions normal)
not
mentally 5THdisabled but sexually immature
•
treated by genetically engineered
-
- bacteria
over secretion of GH
=
acromegaly TB
-
a
hand ,
thickening
face ,
of
feet
soft
bones
tissues =
enlarged
enlarged features / tongue
LB two lobes
Thyroid
( butterfly shape)
Gland
on either side of trachea ,
below
larynx
Hormone =
thyroxine
• iodine is essential for thyroxin production [ found in sea
salty seafood ]
↳ low iodine levels form
goitre may
=
Functions of
thyroxine :
Increases ( heat )
r
Promotes
basal
normal
metabolic rate
body =
controlling rate of cellular respiration
• heart
functioning
* Promotes normal functioning of nervous system [ increasing nervous
activity + sharpening /
alertness reflexes
]
Disorders :
Hypothyroidism = too little
w Adults
Myx oedema
-
- . children -
-
cretinism
blood pressure
L• mental physical
sluggishness ,
low ,
Las does
sexual
not
grow physically ,
immature
disabled
slow heart
respiratory rate
,
low
body temp development ,
mentally
