BIOL 251 Unit Exam 1 Part 1 | Portage Learning A&P II | Endocrine & Blood Q&A | 100% Verified Answers | Updated 2026

Master the complexities of the Endocrine System and Blood Physiology with this comprehensive BIOL 251 Unit Exam 1 (Part 1) study guide. This document features 100% correct, verified answers and detailed feedback for exam questions covering Chapters 17 and 18. Key topics include the regulatory functions of major hormones such as TSH, Glucagon, Insulin, and Cortisol, as well as the pathophysiology of endocrine disorders like Cushing’s Disease and Goiters. The exam content provides high-yield details on the Pituitary Gland (Anterior vs. Posterior secretion), the Adrenal Medulla (Epinephrine/Norepinephrine), and the function of Pancreatic Islets. In the Blood section, you will find essential data on the stages of Hemostasis (Vascular Spasm, Platelet Plug, and Coagulation), Erythrocyte (RBC) lifespan, and Hematocrit averages for men and women. It also covers Leukocyte (WBC) classifications, including B-cells, T-cells, and Natural Killer (NK) cells. Perfect for students in Nursing or Anatomy & Physiology II programs, specifically through Portage Learning. Updated for 2026, this guide ensures you are studying the most relevant material to secure an A+ on your first attempt. Download now to skip the stress and pass with confidence!