Coordination of the Nervous and Endocrine Systems (OCR A-Level Biology A): Flashcards
📚Flashcards
Practise the cards
10 cards from this deck
ShowHide
Practise the cards
10 cards from this deck
Nervous vs endocrine: speed & duration
Nervous vs endocrine: speed & duration
Nervous: rapid, short; Endocrine: slow, long-lasting
Fight-or-flight response definition
Fight-or-flight response definition
Stress reaction preparing body to confront or escape danger
Hypothalamus role in stress
Hypothalamus role in stress
Central coordination centre for stress response pathways
Fast stress pathway sequence
Fast stress pathway sequence
Hypothalamus→sympathetic nerves→adrenal medulla→adrenaline
Adrenaline effect on airways
Adrenaline effect on airways
Bronchodilation (increases bronchiole diameter)
Adrenaline & blood glucose mechanism
Adrenaline & blood glucose mechanism
Stimulates glycogenolysis (glycogen→glucose) in liver
Adrenaline half-life
Adrenaline half-life
160-190 seconds
Myogenic meaning
Myogenic meaning
Generates own contractions without external nervous stimulation
Antagonistic control of heart
Antagonistic control of heart
Sympathetic increases, parasympathetic decreases heart rate
Vagus nerve effect on heart
Vagus nerve effect on heart
Releases acetylcholine, decreases heart rate