Endocrine system Flashcards
What does the endocrine system consist of
Glands and hormones
What is the endocrine system known as
hormonal system
What are hormones known as
chemical messengers
-long lasting
-slow acting
Where are hormones released into
The blood stream
What is the fight/flight an adaptation for
Evolutionary adaptation for dealing with physcial threats
What does the fight/flight reaction do
help deal with short term problems which could be solved by fighting/running
What part of the peripheral nervous system works in the process of fight/flight
the autonomic system
What is the first step of the fight/flight response
enter dangerous situation
What is the second step of the fight/flight response
Amygdala activated and sends distress signal to hypothalamus
What is the third step of the fight/flight response
Hypothalamus activates sympthomedallary pathway, running to adrenal medulla and sympathetic nervous system
What is the fourth step of the fight/flight response
SNS activate adrenal medualla part of adrenal gland
What is the fifth step of the fight/flight response
Adrenal medulla secretes adrenaline into blood stream
What are some physiological changes in fight/flight
-Heart rate increase
-Breath rate increase
-Sweaty palms
-Pupils dialate
-Other organs may cease function e.g bladder
What are some physiological changes in rest/digest
-Heart rate return to normal
-Breath rate return to normal
-Palms go dry
-Pupils constrict
-Other organs resume normal functions
Why does the heart rate increase
increase blood flow to organs + increase movement of adrenaline around body
