Physiology of Domestic Animals Flashcards
(9 cards)
Endocrinology
Hormonal control of body function
Endocrine glands
Release chemical messengers
Hormones
Where originate?
exert effects on target tissue containing specific receptors
Originate from the endocrine glands or nerves
Nerve imoulses
fast, short-term reactions
Endocrine
Hormone realeased from a gland and the hormone travels via circulation to another organ where it exerts its effect.
longer duration, adaptation responses
Paracrine
A cell secretes a compound that has effects on neighboring cells.
(ex. growth and clotting factors; allergic reactions, prostaglandins)
para -around
Autocrine
Cell utilizes a compound that it produces itself
ex. immune function, interleukins
Peptide or Amino acid sequence
- Derivatives of single amino acids
- Peptides
- Complex proteins
How do hormones act
- Bind to specific receptors
- Stimulate synthesis of end products
- Alter activity of crucial enzymes
- Transport rate of material across cell membrane