Published in AEMT, EMR, EMT. Tags: anatomy, integumentary system, orthopedic trauma, physiology.
The skin is a vital organ that covers the entire outside of the body, forming a protective barrier against pathogens and injuries from the environment. The skin is the body’s largest organ; covering the entire outside of the body, it is about 2 mm thick and weighs approximately six pounds. It shields the body against […]
Published in AEMT, EMR, EMT. Tags: anatomy, blood, blood vessels, physiology, shock and resuscitation.
Air enters the body through the mouth or nose and quickly moves to the pharynx, or throat. From there, it passes through the larynx, or voice box, and enters the trachea. The trachea is a strong tube that contains rings of cartilage that prevent it from collapsing. Within the lungs, the trachea branches into a […]
Published in AEMT, EMR, EMT. Tags: anatomy, blood, blood vessels, cardiology, physiology, shock and resuscitation.
Blood Flow Away from the Heart As the heart pumps, blood is pushed through the body through the entire circulatory system. Oxygenated blood is pumped away from the heart to the rest of the body, while deoxygenated blood is pumped to the lungs where it is reoxygenated before returning to the heart. With each rhythmic […]
Published in AEMT, EMR, EMT. Tags: anatomy, bleeding, blood, pathophysiology, physiology.
Blood is the fluid of life, transporting oxygen from the lungs to body tissue and carbon dioxide from body tissue to the lungs. Blood is the fluid of growth, transporting nourishment from digestion and hormones from glands throughout the body. Blood is the fluid of health, transporting disease-fighting substances to the tissue and waste to […]
Published in AEMT, EMR, EMT. Tags: anatomy, blood vessels, cardiology, pathophysiology, physiology, shock and resuscitation.
Blood vessels are the channels or conduits through which blood is distributed to body tissues. The vessels make up two closed systems of tubes that begin and end at the heart. One system, the pulmonary vessels, transports blood from the right ventricle to the lungs and back to the left atrium. The other system, the […]
Published in AEMT, EMR, EMT. Tags: anatomy, cardiology, pathophysiology, physiology, respiratory.
Our lungs are among our largest vital organs. The oxygen you breathe in goes into your lungs and passes into your blood from there. It is then transported to all the cells in your body through your bloodstream. The lungs are located in the chest region, protected by the ribs in the rib cage. Their […]
Published in AEMT, EMR, EMT. Tags: anatomy, physiology, respiratory.
The blood circulatory system (cardiovascular system) delivers nutrients and oxygen to all cells in the body. It consists of the heart and the blood vessels running through the entire body. The arteries carry blood away from the heart; the veins carry it back to the heart. The system of blood vessels resembles a tree: The […]
Published in AEMT, EMR, EMT. Tags: anatomy, cardiology, physiology, respiratory, shock and resuscitation.
The heart is a muscular pump that provides the force necessary to circulate the blood to all the tissues in the body. Its function is vital because, to survive, the tissues need a continuous supply of oxygen and nutrients, and metabolic waste products have to be removed. Deprived of these necessities, cells soon undergo irreversible […]
Published in AEMT, EMR, EMT. Tags: anatomy, respiratory.
Ventilation, or breathing, is the movement of air through the conducting passages between the atmosphere and the lungs. The air moves through the passages because of pressure gradients that are produced by contraction of the diaphragm and thoracic muscles. Pulmonary ventilation is commonly referred to as breathing. It is the process of air flowing into […]
Published in AEMT, EMR, EMT. Tags: airway, anatomy, respiratory.
The pharynx, commonly called the throat, is a passageway that extends from the base of the skull to the level of the sixth cervical vertebra. It serves both the respiratory and digestive systems by receiving air from the nasal cavity and air, food, and water from the oral cavity. Inferiorly, it opens into the larynx […]