noradrenaline

Differences between neurotransmitters and neuromodulators

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S.N Neurotransmitters S.N Neuromodulators 1. Available in axon terminals. 1. Available in all parts of the body. 2. Are generally packed in small synaptic vesicles. 2. Are packed in large synaptic vesicles. 3. Nerve impulse propagates through synapse. 3. Synaptic transmission is modified and regulated. 4. Change the electric potential- depolarization or repolarization while functioning. … Read more

Major endocrine glands, their hormones and functions

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Introduction The glands which do not have any duct are called ductless glands or endocrine glands. Literally, the term ‘endocrine’ means internally secreting. Their secretions are called internal secretions or hormones. These are released directly into the blood, which carries them to different parts of the body, and where they coordinate their metabolic activities. They … Read more