Order the stages of a response.
Reveal answer
- stimulus
- receptor
- coordinator
- effector
- response
Key words: receptor · effector
3(j) CO-ORDINATION AND RESPONSE · RECALL
3.32 Stimulus, receptor and effector
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Name two kinds of effector.
Reveal answer
Muscles and glands.
Key words: muscles · glands
What is meant by the term transduction?
Reveal answer
Conversion of stimulus energy or chemistry into a biological signal.
Key words: transduction
What is meant by the term coordinated response?
Reveal answer
Linked detection, communication and action caused by a stimulus.
Key words: coordinated response
Parts of a response pathway, Stimulus. Question it answers? Example?
Reveal answer
Question it answers: What changed? Example: High temperature.
Key words: Stimulus
Parts of a response pathway, Receptor. Question it answers? Example?
Reveal answer
Question it answers: What detected it? Example: Thermoreceptor.
Key words: Receptor
Parts of a response pathway, Coordination/communication. Question it answers? Example?
Reveal answer
Question it answers: How is information processed/transmitted? Example: CNS or hormone pathway.
Key words: Coordination/communication
Parts of a response pathway, Effector. Question it answers? Example?
Reveal answer
Question it answers: What acts? Example: Sweat gland.
Key words: Effector
Parts of a response pathway, Response. Question it answers? Example?
Reveal answer
Question it answers: What changes? Example: More evaporative cooling.
Key words: Response
True or false, and why? “A receptor carries out the response.”
Reveal answer
False. It detects; an effector acts.
True or false, and why? “An effector is always a muscle.”
Reveal answer
False. Glands and plant growth tissues can also be effectors.
True or false, and why? “Every pathway must involve conscious brain processing.”
Reveal answer
False. Reflex, hormonal and plant responses can occur without conscious awareness.
Which part of the eye contains the light receptors?
Reveal answer
The retina.
Key words: retina
Give the coordinated response to touching something hot.
Reveal answer
Stimulus: heat → receptor: in skin → coordinator: spinal cord → effector: muscle → response: hand pulled away.
Key words: muscle
In a hormonal response, what releases the chemical signal?
Reveal answer
An endocrine gland, which secretes a hormone into the blood.
Key words: endocrine gland