1. .You rst reoeive these letters.
2. You're missing me a little.
3. You're missing me a lot.
4. You need someone to talk to end I'm
not pioking up.
5. We haven't talked in a while.
6. You feel lonely.
1'. You're feeling sad.
8. You feel like o
Anatomy (figure 15-1)
Adrenal Glands = the glands next to the
Location: abdominal cavity, close apposition to
Domestic animals: paired adrenal glands
Exception: birds clusters of intermixed cortical and
Located: in throat, below larynx, anterior to trachea
Iodine containing -thyroid hormones: T3 and T4
accumulates iodine in great quantities and combines it
stores large amts. of inactive
Catecholamines and the
Epinephrine and Norepinephrine
adrenal chromaffin tissue (adrenal medulla)
Similar structures and biological actions
endocrine roles discussed together as part of
Growth and Cellular Proliferation
All cells in body- derived from single cell
repeated divisions - production of embryo
cell division and subsequent tissue and organ
certain genes turned on and off
Chapter 2: The Vertebrate Endocrine
composed of a prominent mass of secretory
cells as well as connective tissue, blood
vessels, and nerves
Secrete their product directly into the
Table 2.1 lists hormones