Nervous Coordination (AQA A-Level Biology): Flashcards
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Practise the cards
10 cards from this deck
What is coordination?
What is coordination?
Way different parts of an organism work together as unified whole
What do neurones transmit?
What do neurones transmit?
Electrical impulses along their length
What are neurotransmitters?
What are neurotransmitters?
Chemical messengers released by neurones onto target cells
Nervous system: transmission speed
Nervous system: transmission speed
Very rapid
What are hormones?
What are hormones?
Chemical messengers that travel through blood plasma
How do target cells detect hormones?
How do target cells detect hormones?
Via specific receptors on cell surface membranes
Duration of hormonal responses
Duration of hormonal responses
Often long-lasting and widespread
Hormonal system: transmission speed
Hormonal system: transmission speed
Relatively slow
Nervous system analogy
Nervous system analogy
Telephone network - rapid, direct communication
Hormonal system analogy
Hormonal system analogy
Postal service - slower, general messages