Endocrine System Review Guide
Discuss the way in which hormones promote body homeostasis.
Compare and contrast the endocrine system and the nervous system. Make sure you understand the differences between a neurotransmitter and a hormone.
Define negative feedback and describe its role in regulating blood levels of the various hormones. Use an example if you like! J
List AND describe the three types of intercellular communication pathways that enable the body to maintain homeostasis.
Define hormone and target organ
What does the “lock and key system refer to? Explain!
What are the three ways in which hormones are classified?
- AMINO ACID DERIVATIVE
- Peptide hormones
- Lipid derivatives
Compare and contrast the functionality of free vs. protein bound hormones in the plasma (bloodstream).
Free hormones- remain functional for less than an hour
Diagram the mechanism of action of a lipid soluble hormone.
Diagram the mechanism of action of a lipid insoluble hormone. Make sure to show the “messenger systems.”
Sketch AND explain the process of amplification in regards to the effects of hormones.
Compare and contrast the processes of down regulation and up regulation. Use an example that was discussed in class to support your response.
Down regulation- When you have too much of a
particular hormone. The receptor is degraded.
- Ex: eating all the time constantly releasing insulin, looses receptors. Become type 2.
- Upregulation- absence in hormone trigger and increase in number of hormone receptors
If you didn’t already do so, diagram the intracellular response of a steroid hormone.
List AND describe the three ways that endocrine reflexes can be triggered.
Compare and contrast simple endocrine reflexes, complex endocrine reflexes, and neuroendocrine reflexes.
- Endocrine reflexes- most cases controlled by negative feedback mechanism
- Simple reflex- involeves only one hormone
- Complex endocrine reflex- involves one or mor in Time diary step, two or more hormones, ie. The hypothalmus