Stomach is a key organ in the digestive system, acting as a reservoir for food, initiating the digestive process through mechanical mixing and chemical breakdown, and regulating the passage of its contents into the small intestine. Understanding the detailed anatomy of the stomach reveals how it is uniquely designed to perform these functions. Location and … Read more
The oral cavity, or mouth, marks the entry point of the digestive system, equipped with specialized structures for the initial processing of food. Here, food encounters teeth and salivary glands, which work in concert to reduce food to a consistency suitable for digestion and absorption further down the GI tract. Teeth: The Tools for Mechanical … Read more
The Anatomy of GI Tract, also known as the digestive tract, is a continuous tube that runs from the mouth to the anus. It is responsible for breaking down food, absorbing nutrients, and eliminating waste. Here’s a brief overview of the four primary layers of the gastrointestinal tract (GIT) The innermost layer responsible for secretion, … Read more
An electrocardiogram (ECG or EKG) is a non-invasive diagnostic test that records the electrical activity of the heart over time. It is commonly used to detect and analyze heart-related problems, including abnormal rhythms, inadequate blood flow, and structural issues. How an ECG Works: The ECG measures the electrical changes on the skin produced by the … Read more
A pulse is the rhythmic expansion and contraction of arteries caused by the surge of blood with each heartbeat. It is an important indicator of cardiovascular health and heart function. How the Pulse Works: During systole (heart contraction), blood is pumped into the arteries, increasing pressure within them. This pressure wave travels through the arterial … Read more
Regulation of blood pressure is the force exerted by circulating blood on the walls of blood vessels. It is crucial to maintain optimal blood pressure for the delivery of oxygen and nutrients to tissues and organs. The regulation of blood pressure involves several mechanisms: 1. Baroreceptors (Regulation of Blood Pressure) Location: Aortic arch and carotid … Read more
The digestive system is a complex group of organs and glands that processes food, breaks it down into nutrients, and eliminates waste. Here are the realistic diagrams of the human digestive system, designed to showcase the entire pathway and major organs involved in digestion. It plays a crucial role in maintaining overall health and wellbeing. … Read more
The cardiac cycle is a series of events that occur in the heart during one complete heartbeat. It consists of two main phases: diastole (relaxation) and systole (contraction). During the cardiac cycle, the atria and ventricles contract and relax in a coordinated manner to pump blood throughout the body. The duration of a single cardiac … Read more
Cardiac output (CO) is a measure of the volume of blood pumped by the heart in one minute. It is a crucial indicator of the efficiency of the heart and the circulatory system in delivering oxygen and nutrients to the body’s tissues. Factors Determining Cardiac Output CO is determined by two primary factors: Heart Rate … Read more
Heartbeat Regulation by the Autonomic Nervous System (ANS)) plays a crucial role in regulating the heartbeat and maintaining cardiovascular homeostasis. The ANS consists of two primary branches: the sympathetic nervous system (SNS) and the parasympathetic nervous system (PNS), both of which have opposing effects on heart function. Sympathetic Nervous System (SNS) Role: Responsible for the … Read more
