Term
| 4 types of first messengers |
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Definition
-Neurotransmitters
-Hormones
-Growth Factors
-Cytokines |
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Term
| Neurotransmitter Characteristics |
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Definition
| Small, hydrophillic,short range, and have excitatory or inhibitory action depending on receptor |
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Term
|
Definition
Diverse group of molecules(amino acid derivatives, small peptides, proteins, lipid derivatives)
-long range, and are released only to provoke a specific response from target cells |
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|
Term
| Why are hydrophobic hormones relatively small? |
|
Definition
| Because they are mostly diffusing through membranes, and in order to do this they need to be small |
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Term
| in General what size are hydrophillic hormones? |
|
Definition
| range from small to extremely large |
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|
Term
| What hydrophobic hormone is classified as a local hormone which is associated with paracrine function? |
|
Definition
|
|
Term
| Examples of hydrophillic hormones |
|
Definition
| Substituted amines,peptides |
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Term
|
Definition
| prostaglandins, steroids, retinoids |
|
|
Term
| Growth Factor characterisitics |
|
Definition
| More than 50 proteins used in the paracrine and autocrine system, functioning in cell growth and differentiation |
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Term
|
Definition
| more than 80 large proteins in the paracrine and autocrine system taht work in the coordination of the immune response |
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Term
|
Definition
| interleukins, interferons, TNFalpha and beta |
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