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Seasonal changes can bring sneezing, a runny nose, coughing, throat irritation, and congestion. Changes in temperature, dry air, allergies, and respiratory viruses can all contribute to these symptoms. Fortunately, simple home remedies and healthy habits may help soothe discomfort and support recovery. In this article, discover 10 practical home remedies for seasonal cold, cough, and throat irritation, along with prevention tips and warning signs that should not be ignored. https://educa-trix.blogspot.com/2026/10/seasonal-cold-cough-throat-irritation-home-remedies.html Why Do Cold, Cough and Throat Irritation Increase During Seasonal Changes? Seasonal transitions can coincide with increased circulation of respiratory viruses and exposure to allergens. Common causes include: Viral infections: Common cold viruses can cause sneezing, nasal congestion, coughing, and sore throat. Allergies: Pollen, dust, and mold may trigger sneezing, an itchy throat, and a runny nose. Dry air: Dry indo...
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Human Heart Circulatory system(Part 1)
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An
Introduction to the Cardiovascular System
The
cardiovascular
system can
be thought of as the transport system of the body. This system has
three main components: the heart,
the blood
vessels and
the blood itself. The heart is the system’s pump and the blood
vessels are like the delivery routes. Blood can be thought of as a
fluid which contains the oxygen and nutrients the body needs and
carries the wastes which need to be removed. The following
information describes the structure and function of the heart and the
cardiovascular system as a whole.
Structure
and Function of the Heart
Function
and Location of the Heart
The
heart’s job is to pump blood around the body. The heart is located
in between the two lungs. It lies left of the middle of the chest.
Structure
of the Heart
The
heart is a muscle about the size of a fist, and is roughly
cone-shaped. It is about 12cm long, 9cm across the broadest point and
about 6cm thick. The pericardium
is
a fibrous covering which wraps around the whole heart. It holds the
heart in place but allows it to move as it beats. The wall of the
heart itself is made up of a special type of muscle called
cardiac muscles.
Chambers
of the Heart
The
heart has two sides, the right side and the left side. The heart has
four chambers. The left and right side each have two chambers, a top
chamber and a bottom chamber. The two top chambers are known as the
left
and right atria (singular:
atrium). The atria receive blood from different sources. The left
atrium receives blood from the lungs and the right atrium receives
blood from the rest of the body. The bottom two chambers are known as
the left and right ventricles. The ventricles
pump
blood out to different parts of the body. The right ventricle pumps
blood to the lungs while the left ventricle pumps out blood to the
rest of the body. The ventricles have much thicker walls than the
atria which allows them to perform more work by pumping out blood to
the whole body.
Blood
Vessels
Blood
Vessel are tubes which carry blood. Veins
are
blood vessels which carry blood from the body back to the heart.
Arteries
are
blood vessels which carry blood from the heart to the body. There are
also microscopic blood vessels which connect arteries and veins
together called capillaries.
There
are a few main blood vessels which connect to different chambers of
the heart. The aorta is the largest artery in our body. The left
ventricle pumps blood into the aorta which then carries it to the
rest of the body through smaller arteries. The pulmonary
trunk is
the large artery which the right ventricle pumps into. It splits into
pulmonary
arteries which
take the blood to the lungs. The pulmonary
veins take
blood from the lungs to the left atrium. All the other veins in our
body drain into the inferior
vena cava (IVC)or
the Superior
Vena Cava. These
two large veins then take the blood from the rest of the body into
the right atrium.
Valves
Valves
are
fibrous flaps of tissue found between the heart chambers and in the
blood vessels. They are rather like gates which prevent blood from
flowing in the wrong direction. They are found in a number of places.
Valves between the atria and ventricles are known as the right
and left atrioventricular valves otherwise
known as the tricuspid and mitral valves respectively. Valves between
the ventricles and the great arteries are known as the Semilunar
valves. The
aortic
valves is
found at the base of the aorta, while the pulmonary
valves is
found the base of the pulmonary trunk. There are also many valves
found in veins throughout the body. However, there are no valves
found in any of the other arteries besides the aorta and pulmonary
trunk.
For Continue reading about human heart circulatory system, please keep logged in .
Introduction Cystic fibrosis (CF) is a hereditary disorder that primarily affects the lungs and digestive system. It is characterized by the production of abnormally thick and sticky mucus that can clog the airways and obstruct the pancreas. CF is a progressive disease, leading to severe respiratory and digestive problems, and it often results in a shortened lifespan. Causes Cystic fibrosis is caused by mutations in the CFTR (cystic fibrosis transmembrane conductance regulator) gene. This gene is responsible for the production of a protein that regulates the movement of salt and water in and out of cells. Mutations in the CFTR gene result in the production of a defective protein, leading to the accumulation of thick mucus in various organs. Symptoms The symptoms of cystic fibrosis can vary widely but commonly include: Respiratory symptoms: Persistent coughing, frequent lung infections (including pneumonia and bronchitis), wheezing, and shortness of breath. Digestive symptoms: Difficu...
Liver cysts are fluid-filled sacs that develop inside the liver. Most liver cysts are harmless and may not cause symptoms, but some can grow larger and lead to discomfort or complications. These cysts can form in any lobe of the liver — right lobe or left lobe — depending on the underlying cause. https://educa-trix.blogspot.com/2026/05/how-to-correct-non-alcoholic-fatty.html What Is a Liver Cyst? A liver cyst is a small pocket filled with fluid inside the liver tissue. Many people discover liver cysts accidentally during an ultrasound or CT scan done for another reason. Most simple liver cysts are non-cancerous and do not affect liver function. Common Reasons for Liver Cyst Formation 1. Congenital (Present Since Birth) Cysts Some people are born with tiny abnormalities in the bile ducts that later develop into cysts. These are called simple liver cysts . Features: Usually harmless Often found after age 40 More common in women May remain symptom-free for years 2. Pol...
https://educa-trix.blogspot.com/2026/07/thyroid-imbalance-during-menopause-causes-symptoms-prevention.html MMR Immunization: A Small Vaccine That Gives Big Protection The MMR vaccine is one of the most important childhood vaccines. It protects children from Measles, Mumps, and Rubella —three highly contagious viral infections that can cause serious complications, including pneumonia, hearing loss, brain infection, birth defects, and even death in severe cases. The World Health Organization (WHO) recommends two doses of measles-containing vaccines for strong, long-lasting protection. Giving the MMR vaccine on time helps protect not only your child but also vulnerable people in the community through improved immunity coverage. https://educa-trix.blogspot.com/2026/07/thyroid-imbalance-during-menopause-causes-symptoms-prevention.html MMR Vaccine Schedule (India) According to pediatric recommendations in India, children should receive MMR in the following schedule: immunizeindia.org Age V...
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