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10 Cards in this Set
- Front
- Back
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Hormone
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chemical produced by specialized tissues and released into blood, affects target tissues elsewhere
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Neurohormone
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Hormone produced by neurosecretory cells, released from neurohemal organ to hemolymph
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Neurotransmitter
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chemical released at neural synapse, enables nervous activation to pass to adjacent neuron
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Neuromodulator
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Neurotransmitter released at synapse, modifies conditions under which other nerve impulses are transmitted/received
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Endocrine Gland/Cell
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produces/secretes hormones
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Neurosecretory cell
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Specialized neuron that produces hormones which are released into hemocoel
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Neurohemal organ
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Secretion-filled axon terminals of neurosecretory cells, function as storage-and-release centres for neurohormones
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Modes of action of insect hormones
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Direct interaction with DNA/transcription (hormones enter cell/nucleus), action through second messengers (hormone binds to receptor protein on cell surface, triggers cascade within cell)
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4 types of insect hormones
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Steroids, sequiterpenes, peptide hormones, biogenic amines
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Factors that affect activity of hormones
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hormone synthesis, hormone release, hormone degradation, receptors on target cells
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