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- https://bio.libretexts.org/Bookshelves/Introductory_and_General_Biology/Biology_(Kimball)/15%3A_The_Anatomy_and_Physiology_of_Animals/15.03%3A_Circulatory_Systems/15.3C%3A_The_HeartbeatThis page explains the human heart's function, including its average heartbeat of 70 times per minute and pumping of 5 liters of blood. The sino-atrial node serves as the pacemaker, with contractions ...This page explains the human heart's function, including its average heartbeat of 70 times per minute and pumping of 5 liters of blood. The sino-atrial node serves as the pacemaker, with contractions detected by electrocardiograms (ECGs). It highlights ventricular fibrillation, which can be treated with defibrillators. Additionally, the heart rate is adjusted by the accelerans and vagus nerves, responding to stress and bodily needs to regulate heartbeat and blood pressure.
- https://bio.libretexts.org/Bookshelves/Introductory_and_General_Biology/Biology_(Kimball)/15%3A_The_Anatomy_and_Physiology_of_Animals/15.04%3A_Immune_System/15.4S%3A_InflammationThis page discusses inflammation as a tissue response to injury, detailing its initiation by infections and its role in healing versus potential chronic damage. It covers NSAIDs and their side effects...This page discusses inflammation as a tissue response to injury, detailing its initiation by infections and its role in healing versus potential chronic damage. It covers NSAIDs and their side effects, including risks of ulcers and cardiovascular issues, along with other treatments like COX-2 inhibitors and monoclonal antibodies, which also pose infection risks.
- https://bio.libretexts.org/Bookshelves/Introductory_and_General_Biology/Biology_(Kimball)/15%3A_The_Anatomy_and_Physiology_of_Animals/15.08%3A_Nervous_System/15.8F%3A_Nitric_Oxide_(NO)This page discusses nitric oxide (NO), a reactive gas with vital physiological roles, synthesized by NO synthase (NOS) in cells like neurons and endothelial cells. NO regulates blood flow, kidney func...This page discusses nitric oxide (NO), a reactive gas with vital physiological roles, synthesized by NO synthase (NOS) in cells like neurons and endothelial cells. NO regulates blood flow, kidney function, and gastrointestinal motility, and has effects on inflammation, endocrine secretion, and nervous system function. It plays a role in fertilization, pathogen elimination, and aging, and is used in medical treatments such as erectile dysfunction.
