Nutrition Flashcards
(35 cards)
What is insulin?
Insulin is a hormone produced by the pancreas that regulates blood glucose levels.
True or False: Insulin helps cells absorb glucose from the bloodstream.
True
Fill in the blank: Insulin is primarily secreted by the ______ cells of the pancreas.
beta
Which of the following conditions is primarily associated with insulin deficiency? A) Diabetes Mellitus B) Hypertension C) Hyperlipidemia
A) Diabetes Mellitus
What role does insulin play in metabolism?
Insulin facilitates the uptake of glucose by cells and promotes the storage of excess glucose as glycogen in the liver and muscle.
What is the primary function of glucagon?
To raise blood glucose levels by promoting gluconeogenesis and glycogenolysis in the liver.
True or False: Insulin and glucagon have opposing effects on blood glucose levels.
True
What triggers the release of glucagon?
Low blood glucose levels.
Which hormone is primarily responsible for lowering blood glucose levels?
Insulin
What exactly does the glucagon on the body?
Glucagon primarily raises blood glucose levels by promoting the conversion of stored glycogen to glucose in the liver.
True or False: Glucagon promotes fat consumption in the body.
True
Fill in the blank: Glucagon stimulates the breakdown of _____ into fatty acids.
triglycerides
How does glucagon affect cortisol levels?
Glucagon can stimulate the release of cortisol, which in turn helps to manage energy metabolism during fasting.
What is the relationship between glucagon and fat oxidation?
Glucagon promotes fat oxidation by stimulating lipolysis, the process of breaking down fat stores into fatty acids for energy.
Multiple Choice: What effect does increased cortisol have on fat metabolism?
Increases fat storage
What hormone counteracts the effects of insulin in fat metabolism?
Glucagon
True or False: Cortisol can inhibit the action of glucagon.
False
Fill in the blank: Both glucagon and cortisol are important for maintaining _____ during periods of low energy intake.
blood glucose levels
What metabolic process does glucagon enhance during fasting?
Gluconeogenesis
What is the primary role of cholesterol in the body?
Cholesterol is essential for the formation of cell membranes, hormones, and vitamin D.
True or False: High levels of LDL cholesterol are associated with an increased risk of heart disease.
True
Fill in the blank: The two main types of cholesterol are _____ and _____ cholesterol.
LDL, HDL
How does cortisol affect weight gain?
Elevated cortisol levels can lead to increased appetite and fat accumulation, particularly in the abdominal area.
Multiple Choice: Which type of cholesterol is often referred to as ‘bad’ cholesterol?
LDL