BIOS 255 – Comprehensive Exam Review (30 Questions) – A&P, Muscles, Respiration, Cardiovascular – Chamberlain University

This document is a comprehensive review guide for the BIOS 255: Human Anatomy and Physiology III course at Chamberlain University, covering 30 solved exam questions from the 2025/2026 academic year. It is designed to support students preparing for the BIOS 255 final exam by offering accurate, 100% solved multiple-choice questions along with correct answer annotations. The material spans multiple body systems and physiological processes, including: Nervous system: synaptic transmission, graded potentials, cranial nerve functions Muscular system: sarcomere structure, endochondral ossification, muscle contraction sequences, complete tetanus Skeletal system: bone structure terminology, ossification Cardiovascular system: cardiac cycle, MAP calculation, blood vessel anatomy, stroke volume Respiratory and renal systems: external respiration, ADH function, hematocrit changes Immune system: CD4 T helper cell function Special senses and endocrine system: light pathway through the eye, hormonal regulation Each question is paired with its correct answer, and some include sequential processes (e.g., muscle contraction steps), aiding in understanding both memorization and conceptual reasoning. This resource is ideal for: Students taking BIOS 255 or equivalent advanced A&P courses Nursing and allied health program enrollees Pre-medical students seeking structured exam preparation Learners needing a compact, high-yield overview of multi-system physiology It is especially useful in the final stages of exam prep, acting as a rapid review of high-yield topics. Keywords: nervous system, epithelia, synovial joints, cartilage, sweat glands, palatine bones, ossification, sarcomere, muscle contraction, acetylcholine, complete tetanus, graded potentials, ADH, cranial nerve X, light pathway eye, hematocrit, tunica media, blood pressure, stroke volume, cardiac cycle, CD4 cells, external respiration, hemoglobin oxygen affinity