L4 - Endocrine System Flashcards
Define endocrine system
Chemical system of communication in the body via blood
The pituitary gland is what gland
Mastergland
Target cells respond when?
When there are enough complementary receptor sites stimulated to cause a physiological reaction
The pituitary gland is controlled by the what which sends what
Hypothalamus
Sends releasing hormone to pituitary gland to signal it to make a stimulating hormone
The pituitary gland sends the stimulating hormone where
In the bloodstream to be sent to the target gland
When the target gland releases its hormone, what does the hypothalamus do?
The hypothalamus shuts down releasing hormone production due to high levels of hormone from target gland
NF
The anterior pituitary gland releases what
ACTH
The posterior pituitary gland releases
Oxytocin
ACTH does what
Prepares body for fight or flight by stimulating the adrenal medulla and cortex
Oxytocin is needed for
Infant and mother bonding which makes mothers more likely to protect offspring
Cortisol is responsible for what system
Cardiovascular system
Cortisol has what effects
Increases blood pressure
Causes vasoconstriction
Adrenaline has what effects
Increased heart and breathing rate
Pupil dilating
Digestion inhibition
Noradrenaline has what effects
Vasoconstriction
Increasing blood pressure
