1.
the extracellular fluid (blood plasma and interstitial fluid) that surrounds a multicellular organism's cells.
2.
refers to the conditions outside an organism's body or its individual cells.
3.
is a medical emergency that occurs when an organism's core body temperature drops below the required level for normal metabolism and body functions
4.
are chemical messenger molecules produced by specialized glands or cells that travel through the blood to regulate the activity of distant target organs and tissues.
5.
the system of glands and cells that secrete hormones directly into the bloodstream to regulate distant target organs.
6.
is a ductless organ that synthesizes and secretes hormones directly into the bloodstream
7.
a ductless organ that synthesizes and secretes hormones directly into the bloodstream
8.
substances produced and released by a cell, gland, or organ to perform a specific biological function or to aid in excretion
9.
a pair of small, triangle-shaped endocrine glands located on the superior aspect (top) of each kidney
10.
small, pea-sized endocrine gland located deep in the center of the brain that produces and secretes melatonin
