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Tag Archives: Physiology
Congestive Heart Failure
Congestive heart failure (CHF) is a condition in which the heart’s function as a pump is inadequate to deliver oxygen rich blood to the body. Congestive heart failure can be caused by: diseases that weaken the heart muscle, diseases that … Continue reading
Heart Conduction System
Heart’s electrical system controls all the events that occur when our heart pumps blood. The cardiac conduction system is also called the electrical system. The sinoatrial node (SAN), located within the wall of the right atrium (RA), normally generates electrical … Continue reading
Types of Sleep
Sleep was long considered just a uniform block of time when you are not awake. Thanks to sleep studies done over the past several decades, it is now known that sleep has distinct stages that cycle throughout the night in … Continue reading
Posted in Physiology
Tagged four stages of non-REM, non-REM, Physiology, REM, types of sleep
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What is Normal Heartbeat?
The normal resting adult heart beats regularly at an average rate of 60-100 times per minute. How fast the heart beats (heart rate) is governed by the speed of electrical signals originating from the pacemaker of the heart, the SA … Continue reading
Posted in Physiology
Tagged ECG, electrical signals in heart, normal heart rate, Physiology, PQRST wave
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Hemostasis
DEFINITION: Hemostasis is defined as arrest or stoppage of bleeding STAGES OF HEMOSTASIS: When a blood vessel is injured, the injury initiates a series of reactions resulting in hemostasis. It occurs in three stages: 1. Vasoconstriction 2. Platelet plug formation … Continue reading