Communication Systems Flashcards
Name the 2 types of communication system
The neuronal system
The hormonal system
Describe the neuronal system
uses neurones to carry signals
Describe the effects of the neuronal system
- neurones carry signals very rapidly
2. produce short-term responses
Describe the hormonal system
uses blood to carry hormones from endocrine glands to target cell with specific receptors.
Describe the effects of the hormonal system
usually produces long-term responses
Name the 2 types of hormones in the hormonal system
Peptide hormones and Steroid hormones
Steroid hormones structure
formed from lipids and soluble in the plasma membrane
How do steroid hormones work?
Steroid hormones enter cells and binding to
proteins to enter the nucleus and have an effect on the DNA.
Peptide hormones structure
made of amino acids
How do peptide hormones work?
bind to receptors on the cell surface, activating second messengers which control transcription.
