Chapter 45 Animations   Study Guide

Unit 7: Animal Form and Function Hormones and the Endocrine System Review
  1. Hormones are chemical signals secreted into the system to target cells, and often act by feedback.
  2. The and integrate many functions of the vertebrate system.
  3. The thyroid gland produces two -containing hormones, (T3) and (T4), which are regulated by two feedback loops.
  4. The parathyroid gland regulate calcium homeostasis by secreting hormone (PTH).
  5. The pancreas secretes two hormones from clusters in the islets of to regulate glucose levels.
  6. The adrenal glands are adjacent to the and comprise 2 types of secretory cells.
  7. The gonads - testes and ovaries - produce most of the body's sex hormones, which are derived from cholesterol.
  8. The gland, located within the brain, secretes , mainly at night, which may be involved in biorhythm regulation.
    Review: Human Endocrine Glands and Hormones
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