Glucose regulation

HBS3A

Blood glucoseSugar travels in the blood as g_________, and is stored in liver and

muscle as g__________.Glucose is important because it is the fuel for cellular respiration.

Cellular respiration: glucose + oxygen carbon dioxide + water + ENERGY

Glucose can be stored as GlycogenGlucose Glycogen GlucoseIncreased blood glucose levels Decreased blood glucose

levels G________________ G________________

Glucose can also be made from f____ and a_________ a___________ in a process called g___________________.

These three processes mainly occur in the l_______________.

Blood glucoseSugar travels in the blood as glucose, and is stored in liver and muscle

as glycogen.Glucose is important because it is the fuel for cellular respiration.

Cellular respiration: glucose + oxygen carbon dioxide + water + ENERGY

Glucose can be stored as GlycogenGlucose Glycogen GlucoseIncreased blood glucose levels Decreased blood glucose

levels Glycogenesis Glycogenolysis

Glucose can also be made from fats and amino acids in a process called gluconeogenesis.

These three processes mainly occur in the liver.

Blood glucose regulationThe level of blood glucose is monitored

by the i_____________ of L___________________ in the p______________.

The pancreas makes two hormones i___________ and g_______________.

Insulin is produced in the ______ cells and is released when blood glucose levels are ______________.

Glucagon is produced in the ____ cells and is released when blood glucose levels are ____________.

Other hormones which effect sugar metabolism include

Blood glucose regulationThe level of blood glucose is monitored

by the islets of Langerhans in the pancreas.

The pancreas makes two hormones insulin and glucagon

Insulin is produced in the beta () cells and is released when blood glucose levels are high.

Glucagon is produced in the alpha () cells and is released when blood glucose levels are low.

Other hormones which effect sugar metabolism include cortisol (controlled by ACTH) and adrenaline (controlled by the medulla oblongata and sympathetic nervous system)

Feedback control of glucose

Stimulus

Negative feedback Receptor

Response Modulator

Effector

Increased glucose

Feedback control of glucose

Stimulus

Negative feedback Receptor

Response Modulator

Effector

Increased glucose

Islets of Langerhans in pancreas

Islets of Langerhans in pancreas increase insulin secretion

Liver and muscle cells

Decreased glucose production Increased glucose storage

Decreased glucose

Feedback control of glucose 2

Stimulus

Negative feedback Receptor

Response Modulator

Effector

Decreased glucose

Feedback control of glucose 2

Stimulus

Negative feedback Receptor

Response Modulator

Effector

Decreased glucose

Islets of Langerhans in pancreas

Islets of Langerhans in pancreas increase glucagon secretion

Liver and muscle cells

Increased glucose production Decreased glucose storage

Increased glucose