Hormones Flashcards
What systems are involved in coordination
Nervous, endocrine
What are glands
Organ that secrets substances
Exocrine glands vs endocrine glands
Exocrine: x hormone related, shed secretion into duct to the surface
Endocrine: x duct, shed hormones into blood plasma by diffusion
What are hormones
Chemicals produced and secreted by a gland
Travels around the body through blood plasma
Only affect target cells
Insulin source, role, effect
Source: pancreas
Role: lower blood glucose
Effect: stimulate liver to convert glucose into glycogen for storage
Adrenaline source, roles, effect
Source: Adrenal glands
Role: prepare body for action
Convert glycogen into glucose, increase heart rate, breathing rate, constrict skin and gut vessel
(All to inc resp in muscles)
Effects: alert, dry mouth, pale face, pounding sinking stomach sensation
Testosterone source, roles
Testes
Control male’s secondary sexual characteristics
(Pri= penis presence)
ADH sources, roles, effects
Source: pituitary gland
Control kidney’s water absorption
Adjust kidney tubules water permeability
FSH source, role
Pituitary gland
Stimulate egg development and oestrogen production & secretion
LH source, roles
Pituitary gland
Stimulates ovulation
Oestrogen source and roles
Ovaries
Stimulate and repair uterus lining
Control menstrual cycle
Controls female 2ndary sexual characteristics
Progesterone source and roles
Ovaries & placenta
Maintains uterus lining
What does having diabetes meaning in terms of insulin
X produce enough insulin
How does insulin work
Food inc blood glucose conc
Blood flow body for cells to resp
thru pancreas, detect, release insulin —> thru kidneys to convert into glycogen 4 storage
Nervous system vs endocrine system in terms of
1. Speed
2. Type of msg
3. Method
4. Response
4. Role
Fast // slow
Electrical impulses // hormones
Neurones // blood
Directly to muscle or gland // all over the body, only target cells respond
Fast response // long term effect
