Homeostatis and response

Created by

Sarah Darlington

Cards (23)

How do hormones travel around the body
Secreted in the bloodstream
What do hormones do
Alters activity of target organ
What is the master gland
pituitary gland at the base of the brain
What does the thyroid gland produce
Thyroxine
what does the adrenal gland produce  
Adrenaline
What does the pancreas produce
insulin
What type of response the endocrine system have
Chemical response
What are the optimal conditions for enzymes  
Blood glucose
temperature (37*)
water levels
What happened when blood glucose is too low 
Insulin is not secreted into blois
Liver produces Glycogon
glucose increases
What happens when glucose is too high  
Insulin secreted into blood
glucose turned into glycogen
glucose decreases
What is the Central nervous system
Brain and spinal chord
Definition: nerve cells  
Neurones that are adapted to carry electrical impulses
What are the 3 types of neuron
Sensory
relay
branches
Definition : reflex arc  
Automatic rapid response to minimise potential harm
Order of nervous system  
Receptors
sensory neuron
CNS
relay neuron
motor neuron
effector
Definition : synapse  
Electrical impulse diffusing over gap to stimulate impulse to carry on to a CNS
Name the 4 hormones in menstruation
FSH
oestrogen
LH
Progesterone
What happens on days 1-12 of menstruation
Oestrogen gradually increases - peaks at day 12
LH + FSH stay the same until day 12
What happens on days 13-28 of menstration  
oestrogen drops during day 13/14
LH+FSH peak during day 14 and drop sharply at 15 and stay consistent
Progesterone gradually increases until day 21
FSH hormone  
produced in pituitary gland
causes egg to mature In ovaries
release oestrogen
Oestrogen  
Produced in ovaries
stops FSH producing
Repairs/ thickens lining
releases LH
LH 
produced in pituitary gland
triggers ovulation
(release of mature eggs)
Progesterone  
Produced in ovaries
maintains lining during middle of menstration / during pregnancy