Lab 2 Flashcards
What hormones are water-soluble?
Amino Acid
What hormones are fat-soluble?
Steroids
What hormones cause another hormone to be released?
Tropic
How do amino acid hormones work?
Bind to a receptor on cell membrane, use second messenger to cause an intracellular effect.
How do steroid hormones work?
Cross selectively permeable membrane and cause a direct effect.
What are the 5 hormones released by the hypothalamus?
- Thyrotropin-releasing hormone
- Prolactin releasing hormone
- Corticotropin-releasing hormone
- Gonadotropin-releasing hormone
- Growth hormone-releasing hormone
What stimulates the secretion of Thyrotropin Releasing Hormone?
Cold, stress, low TH levels
What is the target for Thyrotropin Releasing Hormone and what is the effect on the target cell?
Anterior Pituitary
Secretion of TSH
What stimulates the secretion of Prolactin Releasing Hormone
Suckling of the infant
What is the target for prolactin-releasing hormone and what is the effect on the target?
Anterior Pituitary
Secretion of Prolactin
What stimulates the secretion of Corticotropin-Releasing Hormone?
Stress, Morning, Sympathetic Nervous System
What is the target cell for Corticotropin-Releasing Hormone and what is the effect on the target cell?
Anterior Pituitary
Secretion of ACTH
What is the stimulus for Gonadotropin-Releasing Hormone?
Low levels of testosterone and estrogen
What is the target cell of Gonadotropin-Releasing Hormone and what is the effect?
Anterior Pituitary
Secretion of growth LH and FSH
What stimulates the secretion of growth hormone-releasing hormone?
Stress, exercise, ingestion of protein