BackBIOL 2114 Final Exam Review – Step-by-Step Study Guidance
Study Guide - Smart Notes
Tailored notes based on your materials, expanded with key definitions, examples, and context.
Q1. Define hormone
Background
Topic: Endocrine System Fundamentals
This question is testing your understanding of what hormones are and their role in the body.
Key Terms:
Hormone: A chemical messenger produced by endocrine glands.
Endocrine gland: A gland that releases hormones directly into the bloodstream.
Step-by-Step Guidance
Think about the general function of hormones in the body—how do they communicate?
Consider where hormones are produced and how they travel to their target organs or tissues.
Reflect on the difference between hormones and other types of signaling molecules (like neurotransmitters).
Try solving on your own before revealing the answer!
Q2. Describe the mechanisms of action of the two major classes of hormones and give examples of each
Background
Topic: Hormone Classification and Mechanisms
This question is testing your knowledge of how hormones act on their target cells and the differences between the two main classes.
Key Terms:
Lipid-soluble hormones (e.g., steroid hormones)
Water-soluble hormones (e.g., peptide hormones)
Receptor: Protein that binds a hormone and initiates a response.
Step-by-Step Guidance
Identify the two major classes of hormones based on their solubility.
For each class, consider where their receptors are located (inside the cell or on the cell membrane).
Think about how each class triggers a response—direct gene activation vs. second messenger systems.
Recall examples of each class (e.g., steroid hormones for lipid-soluble, insulin for water-soluble).
Try solving on your own before revealing the answer!
Q3. What is a negative feedback system?
Background
Topic: Homeostasis and Regulation
This question is testing your understanding of how the body maintains balance and regulates hormone levels.
Key Terms:
Negative feedback: A process that reduces or shuts off the original stimulus.
Homeostasis: The body's ability to maintain stable internal conditions.
Step-by-Step Guidance
Think about how negative feedback works in general—does it amplify or diminish changes?
Consider examples in the endocrine system, such as regulation of blood glucose or thyroid hormone levels.
Reflect on why negative feedback is important for maintaining homeostasis.
Try solving on your own before revealing the answer!
Q4. What are 3 ways hormones may be stimulated for production and secretion?
Background
Topic: Hormone Regulation
This question is testing your knowledge of the different stimuli that can trigger hormone release.
Key Terms:
Humoral stimulus: Changes in blood levels of certain ions or nutrients.
Neural stimulus: Nerve fibers stimulate hormone release.
Hormonal stimulus: Hormones stimulate other endocrine glands to release hormones.
Step-by-Step Guidance
Recall the three main types of stimuli for hormone release.
For each, think of an example (e.g., blood calcium levels for humoral stimulus).
Consider how these stimuli interact to regulate hormone secretion.
Try solving on your own before revealing the answer!
Q5. List and describe the functions of the six anterior pituitary hormones and what triggers their release
Background
Topic: Pituitary Gland Hormones
This question is testing your knowledge of the hormones produced by the anterior pituitary and their regulatory mechanisms.
Key Terms:
Anterior pituitary: The front portion of the pituitary gland that releases several key hormones.
Hormones: Growth hormone (GH), thyroid-stimulating hormone (TSH), adrenocorticotropic hormone (ACTH), follicle-stimulating hormone (FSH), luteinizing hormone (LH), prolactin (PRL).
Step-by-Step Guidance
List the six hormones released by the anterior pituitary.
For each hormone, briefly describe its main function in the body.
Identify what triggers the release of each hormone (e.g., releasing hormones from the hypothalamus).
Consider how negative feedback regulates their secretion.