Endocrinology - Hormonal mechanisms Flashcards
1
Q
Hormone
A
A chemical messenger secreted directly into blood stream from (ductless) endocrine gland
Target cell/ tissue some distance from gland
Exocrine (ducts) – e.g. salivary, sweat, lacrimal
2
Q
Types of intercellular messengers in the body
A
Endocrine
Autocrine & Paracrine
Neurodocrine
Neurotransmitter
3
Q
Types of hormones
A
Peptide
Steroid
Hormones derived from tyrosine
Eicosanoids
4
Q
Peptide hormones
A
Chains of amino acids
5
Q
Steroid hormones
A
Derived from cholesterol
6
Q
Hormones derived from tyrosine
A
Thyroid hormones and catecholamines (adrenal medulla)
7
Q
Differences in chemical structures
A
Reflects on the ways by which the types of hormones are synthesized, stored, transported and how they act
8
Q
A
