Tag: physiology
- Homeostasis ()
Introduction Homeostasis is a term that was first coined by physiologist Walter Cannon in 1926, clarifying the ‘milieu intérieur’ that fellow physiologist Claude Bernard had spoken of in 1865. ‘Homeo,’ Latinized from the Greek word ‘homio,’ means ‘similar to,’ and when combined with the Greek word ‘stasis,’ meaning ‘standing still’ gives us the term that […]
- Anatomy and Physiology of Organs Related To Delivery ()
The uterus is where the fetus lives The uterus is a hollow muscular organ located in the female pelvis between the bladder and rectum. The ovaries produce the eggs that travel through the fallopian tubes. Once the egg has left the ovary it can be fertilized and implant itself in the lining of the uterus. […]
- The Endocrine System ()
Endocrine systems, also referred to as hormone systems, are found in all mammals, birds, fish, and many other types of living organisms. They are made up of: Glands located throughout the body; Hormones that are made by the glands and released into the bloodstream or the fluid surrounding cells; and Receptors in various organs and […]
- How People Die: Suffocation ()
The most common reason people call 911 is for respiratory distress. In most jurisdictions, 40% of all calls are because the patient is experiencing shortness of breath. Shortness of breath can be caused by many conditions, however varied, the conditions always come down to three root causes: Problems with pulmonary ventilation Problems with oxygenation Problems […]
- Physiology of Respiration ()
Pulmonary ventilation refers to the movement of air in and out of the lungs Ventilation is defined as the movement of air in and out of the lungs. Patient with adequate ventilation are moving normal or near normal volumes of air into and out of the lungs. The pulmonary capillary beds are where oxygen is […]
- More Anatomy of Respiratory System ()
When the intercostal muscles contract, the ribs are displaced outwardly (inhalation). The lungs are attached to the ribs and are stretched in all directions. The stretching of the lungs creates a vacuum (the air pressure inside the lungs becomes less than atmospheric air) and the air from outside the body is drawn into the lungs. […]
- Introduction to Pathophysiology ()
Pathophysiology is the study of the disordered physiological processes that cause, result from, or are otherwise associated with a disease or injury. Pathology is the medical discipline that describes conditions typically observed during a disease state, whereas physiology is the biological discipline that describes processes or mechanisms operating within an organism. Pathology describes the abnormal […]
- Effects of Inadequate Perfusion in Cells ()
When perfusion is inadequate, cells in the body’s various tissues are in jeopardy. Kill enough cells, tissue dies. Enough tissue dies, an organ dies. Enough organs die, the patient dies. Hypotension creates an environment where the cells are starved of glucose and oxygen which denies them the ability to produce ATP (adenosine triphosphate). Without the […]
- Glucose Metabolism ()
The body is dependent upon two processes to create energy at rest and during exercise, aerobic and anaerobic metabolism. Simplified, the aerobic metabolic system uses oxygen, while the anaerobic system does not; however, oxygen plays a vital role in allowing the body to function under both systems. Both the aerobic and anaerobic systems occur simultaneously; […]
- Arterial Blood Gas Determination ()
Like spirometry, EMS generally does not perform ABG collection or analysis. The following information is more hypothetical and intended to demonstrate the connection between a patient and a disorder. Blood gas analysis is a commonly used diagnostic tool to evaluate the partial pressures of gas in blood as well as acid-base content. Understanding and use […]