Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
17 Cards in this Set
- Front
- Back
What does the endocrine system regulate?
|
Growth and development
Reproduction Lactation Maintenance of internal envrinonment Energy production, utilization & storage |
|
Define hormones
|
chemicals synthesized in ductless glands and secreted into blood, and thereby transported to target tissues where they evoke a specific response.
|
|
What do exocrine glands do?
|
release secretions into ducts that lead to body surface or cavities within the body.
|
|
What are three types of hormone or growth factor action?
|
Endocrine
Paracrine Autocrine |
|
Describe endocrine
|
secretion from ductless gland into blood, action at distant tissue.
|
|
Describe paracrine
|
secretion by one cell, action on adjacent cells.
|
|
Describe autocrine
|
secretion from a cell acts on the same cell.
|
|
What are the chemical classes of hormones?
|
Proteins/peptides
Amines Steroids |
|
What are examples of proteins/peptides?
|
Thyrotropin-releasing hormone (TRH)
Somatostatin Prolactin |
|
What are examples of amines?
|
Dopamine
Adrenaline Thyroid hormones |
|
What are examples of steroids?
|
Cholesterol
Progesterone Cortisol Testosterone |
|
Define hormone receptors
|
Minimal chemcial moiety of a target cell that provides specific recognition of a hormone
|
|
What do hormone receptors have?
|
They have sites for hormone binding, signal transduction, and or/interaction with cellular macromolecules.
|
|
Where are hormone receptors located?
|
Located on cell surface or intracellular.
|
|
What are three hormones of the hypothalamus?
|
Growth hormone releasing hormone (GHRH)
Somatostatin (=GH inhibiting hormone) Gonatotropin releasing hormone (GnRH) |
|
What are the three parts of the
(hypophysis)? |
Anterior pituitary
Posterior pituitary Pituitary stalk |
|
What does the anterior pituitary produce?
|
Somatotropin (growth hormone)
Follicle stimulating hormone Luteinizing hormone Prolactin |