BIO 251 – Anatomy & Physiology | Exam Q&A (40) | CNS, Brain Regions, Meninges – 2025/2026

This document presents 40 thoroughly answered exam questions from BIO 251: Anatomy & Physiology, Chapter 9 Part 2B, aligned with the 2025/2026 academic year. It focuses on the central nervous system (CNS) and its primary components, including the brain, spinal cord, and meningeal membranes (dura mater, arachnoid mater, pia mater). Key topics include nerve tracts, reflex arcs, and spinal pathways (ascending and descending tracts). In-depth emphasis is placed on the anatomy and function of major brain structures, such as the cerebrum, cerebellum, diencephalon, and brainstem (medulla oblongata, pons, midbrain). Other critical features covered include the corpus callosum, gyri, sulci, and fissures, along with frontal, parietal, temporal, occipital lobes, and insula—components essential for understanding cortical organization. Functional insights into the thalamus and hypothalamus highlight their role in sensory integration and endocrine regulation. This guide is ideal for students enrolled in Nursing, Health Sciences, Neuroscience, Pre-Med, and Biology programs. It supports concept mastery, test prep, and structured review using a focused question-and-answer format. Keywords: meninges, dura mater, arachnoid mater, pia mater, spinal cord, spinal nerves, nerve tracts, ascending tract, descending tract, reflex arcs, brain, cerebrum, cerebellum, brainstem, corpus callosum, gyri, sulci, fissure, frontal lobe, parietal lobe, temporal lobe, occipital lobe, insula, cerebral cortex, thalamus, hypothalamus, midbrain, pons, medulla oblongata, CNS, motor coordination, sensory input