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alpha receptors make the heart beat faster, the pupils of the eyes dilate, and the muscles contract. The beta receptors have similar effects and also cause the bronchi in the lungs to open up

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Are catecholamines water insoluble?

Catecholamines are soluble in water.


What are the differences between catecholamines and non catecholamines?

catecholamines are chemical transmitters,polar compounds readily oxidized has catechol rings and amines such as dopamine nor-epinpherene and serotenie non- catecholamines with out catechol rings


Norepinephrine dopamine and epinephrine belong to a group of neurotransmitters known as?

catecholamines


Catecholamines are derived from what?

tyrosine


Is serotonin a catecholamine?

no serotonin is not a catecholamine. Catecholamines are dopamine, epinepherine and norepinepherine.


Do Noncatecholamines cross the blood-brain barrier more readily than catecholamines?

Yes, noncatecholamines cross the BBB more readily than catecholamines, because noncatecholamines are less polarized than catecholamines.


Which hormones activate brown fat?

Catecholamines


Hormones known as catecholamines are?

epinephrine and norepinephrine


Catecholamines are produced by what cells?

Catecholamines are produced by chromaffin cells in the adrenal medulla and by sympathetic neurons in the central and peripheral nervous systems.


What neurotransmitters are classified as catecholamines?

The neurotransmitters classified as catecholamines are dopamine, norepinephrine, and epinephrine. These neurotransmitters are derived from the amino acid tyrosine. Catecholamines play important roles in regulating mood, stress response, and physiological functions in the body.


What releases catecholamines as a neurotransmitter?

it would be postganglionic sympathetic fibers


What are two types of catecholamine secreted by the adrenal medulla?

The adrenal medulla primarily secretes two types of catecholamines: epinephrine (adrenaline) and norepinephrine (noradrenaline). Epinephrine is largely responsible for the body's fight-or-flight response, increasing heart rate and energy availability, while norepinephrine plays a key role in regulating blood pressure and maintaining arousal. Both hormones are crucial in preparing the body to respond to stressors.