neurohormone
Low (C2)Technical / Scientific
Definition
Meaning
A hormone produced by nerve cells and released into the bloodstream to regulate physiological processes.
Any chemical substance synthesized by neurons that functions as both a neurotransmitter (acting locally at synapses) and a hormone (acting on distant targets via the bloodstream).
Linguistics
Semantic Notes
The term sits at the intersection of endocrinology and neuroscience. It denotes a specific class of signaling molecules (e.g., oxytocin, vasopressin, norepinephrine) that bridge neural communication and systemic hormonal regulation.
Dialectal Variation
British vs American Usage
Differences
No significant lexical differences. Spelling follows regional norms for scientific terms (e.g., 'behavioural' vs. 'behavioral' in surrounding text, but 'neurohormone' itself is spelled identically).
Connotations
Identical in both varieties—purely technical and neutral.
Frequency
Equally low-frequency and confined to specialized fields in both regions.
Vocabulary
Collocations
Grammar
Valency Patterns
NP (subject) + releases/produces + neurohormoneneurohormone + acts as/in/on + NPVocabulary
Synonyms
Neutral
Weak
Vocabulary
Antonyms
Usage
Context Usage
Business
Not used.
Academic
Used in neuroscience, endocrinology, and physiology research papers and textbooks.
Everyday
Virtually never used.
Technical
Core term in medical and biological discussions of hormonal regulation by the nervous system.
Examples
By Part of Speech
adjective
British English
- The neurohormonal response was measured.
- This triggers a complex neurohormonal pathway.
American English
- The neurohormonal response was measured.
- This triggers a complex neurohormonal pathway.
Examples
By CEFR Level
- Oxytocin is a neurohormone that plays a role in social bonding.
- The study examined how stress affects neurohormone levels.
- The hypothalamus synthesises neurohormones that regulate pituitary function.
- Unlike classic neurotransmitters, norepinephrine can also act as a neurohormone when released into the systemic circulation.
Learning
Memory Aids
Mnemonic
Think: NEURO (nerve) + HORMONE (body's chemical messenger) = a hormone made by nerves.
Conceptual Metaphor
A chemical dispatch rider who works for the nervous system but delivers messages via the bloodstream to the whole body.
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Avoid calquing as 'нервный гормон' (nervnyy gormon), which sounds like a 'nervous/anxious hormone'. The standard Russian equivalent is 'нейрогормон' (neyrogormon).
Common Mistakes
- Mispronouncing as 'neuro-hor-moan'.
- Confusing with 'neurotransmitter' (acts locally) or 'hormone' (not necessarily neural in origin).
Practice
Quiz
What is the primary distinction between a neurotransmitter and a neurohormone?
FAQ
Frequently Asked Questions
Yes, adrenaline (epinephrine) is a classic example. It is released by the adrenal medulla (which is neurally derived) into the bloodstream in response to stress, acting on distant targets.
All neurohormones can be neuropeptides (small protein molecules), but not all neuropeptides are neurohormones. 'Neuropeptide' is a structural term, while 'neurohormone' is a functional term describing release into the bloodstream.
Primarily in specialised neural tissues like the hypothalamus and the adrenal medulla, though other neurons throughout the nervous system can also produce them.
Yes, this is a key feature. For example, norepinephrine functions as a neurotransmitter in the brain and sympathetic nerves, but as a neurohormone when released from the adrenal medulla into the blood.