Endocrine System Practice Quiz

Front 1

Cells may communicate with one another by ____

Back 1

Transferring signal molecules to adjacent cells through gap junctions; Local-acting chemicals, called paracrines and autocrines; Long-distance means, which rely on combinations of electrical and chemical signals

Front 2

Describe the characteristics of autocrine and paracrine control

Back 2

Autocrine and paracrine control use chemicals (ligands) to regulate cell activity; Paracrine control is when a cell regulates its neighbor; Target cells have receptors that recognize and bind the specific chemical (paracrine, autocrine or hormone)

Front 3

Peptide hormones regulate their target cells by

Back 3

binding to cell surface receptors which activate intracellular signaling pathways

Front 4

Describe the mechanism used by the tyrosine derivative hormones, epinephrine and thyroid hormone, to trigger their target cell's response

Back 4

Thyroid hormone (TH) binds intracellular receptors to increase gene expression

Front 5

When steroid hormones bind to their receptors

Back 5

gene transcription is activated

Front 6

Joanne presents to her physician with elevated plasma cortisol levels. She is administered dexamethasone, a drug used to suppress the secretion of ACTH from the pituitary gland. her plasma cortisol levels fall to normal 60 minutes after the dexamethasone treatment. Joanne's condition can be described as

Back 6

Second pathology because suppression of the pituitary hormone, ACTH, corrected the secretion of cortisol from the adrenal gland

Front 7

Describe steroid hormones

Back 7

They require carrier proteins for delivery to target tissues

Front 8

The single most important factor that determines whether a specific gene in a given cell can be regulated by growth hormone is the presence in this cell of

Back 8

specific growth hormone receptors