W9 S1 Bio 109

What is released when the stomach walls are stretched?

• Insulin

• Leptin

• Gastrin

• Ghrelin

What is chyme, and how does it travel?

• Amino acids, through the bloodstream

• An acidic mixture of partially digested food, into the duodenum

• Bile, into the large intestine

• Enzymes, into the stomach lining

What releases CCK, and what is CCK’s function?

• The stomach, stimulates appetite

• The pancreas, regulates blood sugar levels

• The duodenum, pancreas to release digestive enzymes & gallbladder releases bile

• The liver, promotes glucose production

What does high levels of secretin and CCK cause?

• Slows down digestion and reduces peristalsis

• Reduced appetite and weight loss

• Increased peristalsis and faster digestion

• Enhanced taste perception and increased salivation

How do the body cells know when to store glucose as glycogen?

• When the thyroid gland produces thyroxine

• When the pancreas releases insulin

• When the adrenal glands release cortisol

• When the pineal gland secretes melatonin

Are glucagon and insulin always secreted?

• Yes, they are constantly secreted regardless of physiological conditions

• Yes, they their ratio is what changes

• No, their secretion depends on blood sugar levels and other factors

• No, they are only secreted after eating a high-fat meal

When you are hungry, what hormone is released?

• Insulin

• Cortisol

• Ghrelin

• Leptin

Where are the main storage sites of glycogen in humans?

• Lungs and kidneys

• Heart and spleen

• Brain and skin

• Liver and muscle cells

What hormone is being secreted when an overweight horse refuses to eat even though it has gone days without eating?

• Leptin

• Ghrelin

• Insulin

• Cortisol