Diazotrophs are able to catalyze the enzymatic reduction of this compound to ammonia (NH3) using the enzyme nitrogenase

TLS Online TPP Program

#Id: 6522

#Unit 7. System Physiology – Animal

Epinephrine and norepinephrine are metabolized to biologically inactive products by oxidation & methylation catalyzed by monoamine oxidase and catechol -O- methyltransferase respectively

TLS Online TPP Program

#Id: 6523

#Unit 7. System Physiology – Animal

Epinephrine and norepinephrine both act on α-and β-adrenergic receptors (adrenoceptors)

TLS Online TPP Program

#Id: 6524

#Unit 7. System Physiology – Animal

Five dopamine receptors fall into two major categories: D1 -like (D1 and D5 )  D2 -like (D2 , D3 , and D4 )

TLS Online TPP Program

#Id: 6525

#Unit 7. System Physiology – Animal

Norepinephrine produces vasoconstriction via  α1 receptors, but epinephrine dilates the blood vessels in skeletal muscle and liver via β2 receptors

TLS Online TPP Program

#Id: 6526

#Unit 7. System Physiology – Animal

Catecholamines increase the secretion of insulin and glucagon via β-adrenergic mechanisms and inhibit the secretion of these hormones via α-adrenergic mechanisms

TLS Online TPP Program

#Id: 6527

#Unit 7. System Physiology – Animal

The pancreas is composed of two major types of tissues, as: 

the acini

the islets of Langerhans