Duke University

This document provides a detailed examination of the endocrine system, particularly focusing on the hypothalamus-pituitary axes and their role in hormone regulation. It begins with an exploration of the pituitary gland, describing its anatomical structure, development, and the complex interactions between its anterior and posterior segments with the hypothalamus. The text elaborates on the hormonal pathways, including the synthesis, release, and action of hormones like growth hormone (GH), thyro...

This comprehensive document examines the intricacies of the cardiovascular system, detailing the structure, function, and electrical activity of the heart, as well as the dynamics of blood flow through the cardiovascular circuit. It explains the functional division of the heart into right and left sections, emphasizing their roles in pulmonary and systemic circulations, respectively, and explores the specialized electrical conduction system that governs the rhythmic beating of the heart. The ...

This document thoroughly explores the structure and function of various muscle types within the human body, focusing on their mechanisms of contraction and regulation. It details the differences and shared characteristics among skeletal, cardiac, and smooth muscles, emphasizing their unique structural features, control mechanisms, and functional roles. For skeletal muscle, the document delves into the sarcomere structure, the fundamental unit of muscle contraction, explaining the sliding fila...

This document provides an extensive exploration of the senses and the somatic nervous system, detailing how the body perceives and processes various stimuli from the environment. It begins with an overview of sensory systems, focusing on how sensory information is received through afferent pathways and processed in the central nervous system (CNS). Key sensory modalities discussed include touch, proprioception, pain, temperature, and vision, with an in-depth look at the structure and function of...

This document offers an in-depth exploration of the nervous system, focusing on its structure, function, and the key components involved in neural communication. It begins with an overview of neuron types and glial cells, detailing their roles in supporting and insulating nerve cells. The document elaborates on the electrical properties of neurons, including membrane potentials, the dynamics of sodium and potassium, and how these ions contribute to the generation and propagation of action potent...

This document provides a comprehensive overview of the physiological principles underlying homeostasis and the function of the endocrine system. It covers the structural organization of the body from cells to organ systems, emphasizing the roles of different fluid compartments including the intracellular and extracellular spaces. Detailed explanations are provided on the mechanisms of hormone action, types of hormone interactions (paracrine, autocrine), and the regulation of bodily functions thr...

AACN Cardiac Medicine Certification CMC 2024 Exam Review Questions with Answers and Rationales 100% Pass

AACN Cardiac Medicine Certification CMC 2024 Exam Review Questions and Answers 100% Pass

PNP AC Pediatric Nurse Practitioner - Acute Care 2024 Exam Quiz Study Guide 100% Pass

PNP-AC Pediatric Nurse Practitioner - Acute Care 2024 Exam Board Prep Questions and Answers 100% Pass