Endo Lectures

What is the primary function of the endocrine system?

Produces and releases hormones to maintain homeostasis.

What distinguishes endocrine glands from exocrine glands?

Endocrine glands are ductless and release hormones directly into the bloodstream.

What are chemical messengers that target specific organs called?

Hormones.

What is the role of the negative feedback mechanism in hormone regulation?

It helps maintain stability, such as insulin lowering blood sugar levels.

What hormone stimulates growth and is produced by the anterior pituitary?

Growth Hormone (GH).

What are the hormones produced by the adrenal cortex?

Mineralocorticoids (Aldosterone), Glucocorticoids (Cortisol), and Sex Hormones (Estrogen, Testosterone).

What is the hormone responsible for lowering blood sugar levels?

Insulin.

What condition is characterized by the underproduction of ADH?

Diabetes Insipidus.

What are common symptoms of diabetes?

Polyuria, polydipsia, hyperglycemia, and polyphagia.

Which type of diabetes is typically diagnosed in children and involves no insulin production?

Type 1 Diabetes.

What is the diagnostic tool used to measure average blood sugar over the last 2-3 months?

HbA1c.

What serious condition can develop in Type 1 diabetes when blood sugar levels are extremely high?

Diabetic Ketoacidosis (DKA).

What is hyperthyroidism, and which disease is it commonly associated with?

Overproduction of T3 and T4, commonly associated with Graves' Disease.

What are the symptoms of hypothyroidism?

Weight gain, cold intolerance, constipation, lethargy, depression.

What is a common treatment for Cushing's Syndrome?

Surgery (adrenalectomy) or medication to lower cortisol levels.

What hormone is associated with the adrenal medulla and causes a 'fight or flight' response?

Epinephrine.

What type of diabetes occurs during pregnancy and increases the risk of Type 2 diabetes later?

Gestational Diabetes.

What condition results from overproduction of parathyroid hormone (PTH)?

Hyperparathyroidism.

What are the symptoms of Addison's Disease?

Weakness, fatigue, hypotension, and hyperpigmentation.

What should be monitored regularly in patients with diabetes?

Blood glucose levels.

What is a common symptom of hypoglycemia?

Sweating, shaking, and confusion.

What is the function of the pancreas in the endocrine system?

Produces insulin and glucagon to regulate blood glucose levels.

What are the main effects of cortisol in the body?

Increases blood sugar, suppresses the immune system, and aids in metabolism of fat, protein, and carbohydrates.

What type of feedback mechanism is associated with hormone release?

Negative feedback mechanism.

What can cause secondary hyperparathyroidism?

Chronic kidney disease leading to vitamin D deficiency.

What are common effects of glucocorticoids?

Anti-inflammatory effects and suppression of the immune response.

What is acromegaly?

A condition caused by excess growth hormone in adulthood, leading to enlarged bones and tissues.

Which endocrine disorder is characterized by excessive thirst and urination due to high glucose levels?

Diabetes Mellitus.

What is the primary effect of the hormone aldosterone?

Regulates sodium and potassium levels, and thus blood pressure.

What is the role of the pituitary gland in hormone regulation?

Produces and releases hormones that regulate other endocrine glands.

What is the role of glucagon in blood sugar regulation?

Glucagon increases blood sugar levels by promoting the conversion of glycogen to glucose in the liver.

What is the effect of cortisol on inflammation?

Cortisol has anti-inflammatory effects and helps to manage the body’s response to stress.

What hormones are primarily produced by the pancreas?

Insulin and glucagon.

What is the condition characterized by an underactive thyroid gland?

Hypothyroidism.

What effect does aldosterone have on the kidneys?

Aldosterone increases sodium reabsorption and potassium excretion in the kidneys.

What are the common causes of hyperthyroidism?

Graves' Disease, toxic adenoma, and thyroiditis.

What is the primary function of T3 and T4 hormones?

They regulate metabolism and affect growth and development.

What is the relationship between diabetes and cardiovascular disease?

Diabetes increases the risk of developing cardiovascular disease due to high blood sugar levels affecting blood vessels.

What psychological symptoms can accompany diabetes?

Depression, anxiety, and frustration due to management challenges.

What is the significance of the HbA1c test for diabetics?

It provides an average blood glucose level over the last 2-3 months, indicating long-term glucose control.

What is the primary effect of parathyroid hormone (PTH)?

Increases blood calcium levels by promoting calcium release from bones and reabsorption in the kidneys.

What is the main cause of secondary adrenal insufficiency?

Pituitary gland dysfunction leading to inadequate ACTH production.

What hormones are released by the adrenal medulla?

Epinephrine and norepinephrine.

What is the effect of insulin on liver cells?

Stimulates the conversion of glucose to glycogen for storage.

What condition is characterized by excess cortisol levels?

Cushing's Syndrome.

What is the relationship between thyroid hormones and metabolism?

Thyroid hormones (T3 and T4) regulate the speed of metabolism in the body.

What is the most common form of adrenal insufficiency?

Primary adrenal insufficiency (Addison's Disease).

What organ is primarily responsible for the synthesis of insulin?

The pancreas.

What is the action of glucagon during fasting?

Raises blood glucose levels by promoting glycogen breakdown in the liver.

What lifestyle factors can help manage diabetes effectively?

Healthy diet, regular exercise, weight management, and blood sugar monitoring.