BIO 669 ENDOCRINE EXAM QUESTION WITH CORRECT ANSWERS (GRADE A+) – LATEST 2024/2025

1
BIO
BIO 669 ENDOCRINE EXAM QUESTION WITH CORRECT

ANSWERS (GRADE A+) – LATEST 2024/2025




Follicles Of The Thyroid Gland Include: - Ans ✓Iodine And Thyroglobulin



Parafollicular Cells (C-Cells) Of The Thyroid Gland - Ans ✓Secrete Calcitonin

Which Causes A Decrease In Blood Calcium Levels (Moves Into The Bone)



Thyroid Hormone - Ans ✓90% As T4

10% As T3



*Most T4 Is Converted To T3 (Stronger Potency)



How Is Thyroid Hormone Bound? - Ans ✓Th Is Bound To Thyroxine-Binding

Globulin, Thyroxine-Binding Pre-Albumin, Albumin, Or Lipoproteins



Parathyroid Hormone (Pth) - Ans ✓Increases Serum Calcium And Decreases

Serum Phosphate



*However, Due To Downregulation, If You Have Constant High Levels Of Pth It Can

Lead To Osteoporosis (Less Receptors On Cell)


BIO 669

, 2
BIO



What Is Needed For Pth Function? - Ans ✓Vitamin D



Islets Of Langerhans - Ans ✓Secrete Insulin And Glucagon



Alpha Cells Secrete - Ans ✓Glucagon (Convert Glycogen To Glucose)



Beta Cells Secrete - Ans ✓Insulin And Amylin



*Amylin Slows The Absorption Of Nutrients Into The Bloodstream



Insulin Secretion Is Promoted By Increased Levels Of: - Ans ✓Glucose, Amino

Acids, And Gi Hormones



*Insulin Is An Anabolic Hormone And Aids In The Synthesis Of Proteins, Lipids, And

Nucleic Acids



Amylin - Ans ✓Delays Nutrient Uptake By Diminishing Contractility Into The

Stomach And Decreasing The Transport Of Nutrients From The Stomach Into The

Duodenum



*Suppresses Glucagon Secretion



BIO 669