ENDOCRINE SYSTEM

Question 1

Hormones secreted through the bloodstream are ____.

Answer 1

Endocrine.

Question 2

Hormones secreted through ducts are ____.

Answer 2

Exocrine.

Question 3

Hormones secreted to neighboring cells are _____.

Answer 3

Paracrine.

Question 4

Hormones secreted onto the same cell that is secreting the hormone are ____.

Answer 4

Autocrine.

Question 5

What are the 3 types of hormones?

Answer 5

Peptide hormones
Steroid hormones
Amino-acid derived hormones.

Question 6

Peptide hormones are produced in the ______ and made of amino acids connected by peptide bonds.

Answer 6

Rough ER.

Question 7

T/F: Peptide hormones are water-soluble and not lipid-soluble.

Answer 7

True.

Question 8

A G protein is coupled to a GPCR and dissociated into subunits ___, ___, and ___ after activation.

Answer 8

Alpha
Beta
Gamma

Question 9

A _______ is a cell surface receptor that dimerizes and initiates second messenger responses upon binding to a peptide hormone.

Answer 9

Receptor tyrosine kinases (RTKs)

Question 10

The second messenger system of peptide hormone signaling allows for _____ physiological changes.

Answer 10

Quick and immediate.

Question 11

_______ change shape upon binding to peptide hormones, allowing ions to flow across the cell membrane.

Answer 11

Ligand-gated ion channels.