Exam 2 Ch 3

Question 1

Neuronal receptors in a cell that are specific for the same neurotransmitter released by that cell. They typically inhibit further neurotransmitter release

Answer 1

Autoreceptors

Question 2

Process by which an ionotropic channel receptor remains closed despite the presence of an agonist bound to the receptor.

Answer 2

Desensitization

Question 3

Specialized organs that secret hormones into the bloodstream

Answer 3

Endocrine gland

Question 4

Method by which vesicles release substances and Neuro transmitters characterized by fusion of the vesicle and the cell membrane specifically the axon terminal membrane in the case of neural transmitters. The vesicle opens toward the synaptic, cleft, allowing neurotransmitter molecules to diffuse out.

Answer 4

Exocytosis

Question 5

Group of membrane proteins that are necessary for Nero transmitter, signaling buy metabotropic receptors. They operate by regulating ion channels or effector enzymes involved in the synthesis or breakdown of second messenger, ultimately causing biochemical or physiological changes in the postsynaptic cell.

Answer 5

G proteins

Question 6

Chemical substances secreted by endocrine glands into the bloodstream, where they travel to target locations in the body

Answer 6

Hormones

Question 7

Fast acting receptor type comprised of several subunits that come together in the cell membrane. The receptor has an ion channel at its center, which is regulated by neural transmitters binding to specific sites on the receptor, causing the channel to open. It may also be called a ligand-gated channel receptor

Answer 7

Ionotropic receptor

Question 8

Slow acting receptor type of composed of a single large proteins in the cell membrane that activates G proteins. It may also be called a G protein coupled receptor.

Answer 8

Metabotropic receptors

Question 9

Enzymes that catalyze the phosphorylation of other proteins

Answer 9

Protein kinases

Question 10

Substance that, when activated by signaling molecules bound to receptors in the cell membrane, will initiate biochemical processes within the cell

Answer 10

Second messenger