https://www.setelan.my.id/

 The uterus, also known as the womb, is a vital organ in the female reproductive system. Located in the pelvis, it plays a central role in menstruation, pregnancy, and childbirth. This hollow, muscular structure provides a safe environment for fetal development and supports reproductive health throughout a woman’s life. Anatomy of the Uterus The uterus is a pear-shaped organ positioned between the bladder and rectum. Its structure includes the following parts: Fundus: The upper, dome-shaped portion of the uterus. Located above the openings of the fallopian tubes. Body (Corpus): The main and largest portion, where the fertilized egg implants and develops during pregnancy. Isthmus: A narrow region between the body and the cervix, which becomes more flexible during labor. Cervix: The lower, cylindrical part of the uterus that connects to the vagina. Acts as a passageway for menstrual flow, sperm, and, during childbirth, the baby. The uterine wall consists of three layers: Endometrium:...

 The intestines, commonly referred to as the gut, are essential organs of the digestive system. They play a critical role in breaking down food, absorbing nutrients, and eliminating waste. This long, tubular structure is divided into two main parts: the small intestine and the large intestine, each with unique functions. Anatomy of the Intestines The intestines are located in the abdominal cavity and are surrounded by other digestive organs such as the stomach, liver, and pancreas. They are divided into the following sections: Small Intestine: The small intestine is approximately 6 meters (20 feet) long and is the site of most digestion and nutrient absorption. Divided into three parts: Duodenum: The first section that receives partially digested food (chyme) from the stomach, along with bile and pancreatic enzymes. Jejunum: The middle section where the majority of nutrient absorption occurs. Ileum: The final section, responsible for absorbing vitamin B12, bile salts, and other ...

 The skin is an incredible and multifunctional organ that serves as the body’s first line of defense. It protects internal organs, regulates temperature, and provides sensory information about the world around us. As the largest organ of the human body, the skin is not just a barrier but also a vital component of overall health and well-being. Anatomy of the Skin The skin is composed of three main layers, each with distinct roles: Epidermis (Outer Layer): The outermost layer, providing a waterproof barrier and creating the skin’s tone. Contains keratinocytes , which produce keratin, a protein that strengthens the skin. Includes melanocytes , which produce melanin, the pigment responsible for skin color. Acts as the body’s first defense against harmful microorganisms. Dermis (Middle Layer): Located beneath the epidermis, this layer contains connective tissues, blood vessels, nerves, hair follicles, and glands. Contains: Sweat Glands: Help regulate body temperature through perspirat...

 The stomach is a key organ in the digestive system, responsible for breaking down food into a form that the body can absorb and use for energy and nutrition. This muscular, hollow organ plays a central role in digestion, serving as a temporary food reservoir and chemical processor. Anatomy and Location of the Stomach The stomach is a J-shaped organ located in the upper abdomen, beneath the diaphragm and to the left of the liver. It connects the esophagus to the small intestine. Structurally, it can be divided into four main regions: Cardia: The area where food enters the stomach from the esophagus. Fundus: The upper, curved part that stores undigested food and gas. Body: The largest section, where most of the digestive activity takes place. Pylorus: The lower part, which connects to the small intestine and regulates the passage of partially digested food (chyme). The stomach wall consists of multiple layers: Mucosa: The innermost layer that secretes gastric juices. Muscularis...

 Blood is a vital fluid that circulates throughout the human body, delivering oxygen and nutrients to tissues, removing waste products, and playing a key role in immunity and homeostasis. It is often referred to as the "lifeline" because it sustains the body's essential functions. Composition of Blood Blood is a complex tissue made up of different components, each serving a unique purpose. It consists of: Plasma (55%): The liquid portion of blood, making up about 55% of its volume. Composed mostly of water (90%) and contains dissolved proteins, electrolytes, hormones, nutrients, and waste products. Functions as a medium for transporting substances throughout the body. Red Blood Cells (RBCs): Also known as erythrocytes, they make up about 40-45% of blood volume. Contain hemoglobin, a protein that binds oxygen and carries it to tissues. Lifespan: About 120 days. White Blood Cells (WBCs): Also known as leukocytes, they make up less than 1% of blood volume. Play a critical ro...

 Fat often gets a bad reputation, but it is an essential nutrient that plays a critical role in the human body. It provides energy, supports cell function, and helps absorb certain vitamins. Understanding the role of fat and its types can help promote a balanced diet and overall health. What is Fat? Fat is one of the three main macronutrients, alongside carbohydrates and proteins. It is a concentrated source of energy, providing 9 calories per gram—more than double the calories of carbohydrates or protein. Fat is stored in the body as adipose tissue, which serves various purposes, including insulation, protection of vital organs, and energy reserves. Types of Fat Not all fats are created equal. They can be broadly categorized into four main types, each with different effects on health: Saturated Fat: Found in animal products such as butter, cheese, and fatty meats, as well as tropical oils like coconut oil and palm oil. Can raise LDL (bad cholesterol) levels, increasing the risk of...

 The kidneys are remarkable bean-shaped organs that play a vital role in maintaining the body's internal balance. Located on either side of the spine, just below the rib cage, the kidneys perform several crucial functions to ensure overall health and homeostasis. Anatomy and Structure of the Kidneys Each kidney is about the size of a fist, measuring approximately 10–12 centimeters in length. Despite their relatively small size, the kidneys filter around 50 gallons of blood daily to remove waste and excess substances. The primary components of the kidneys include: Renal Cortex: The outer layer that contains nephrons, the functional units of the kidney. Renal Medulla: The middle region containing structures called renal pyramids, which collect filtered fluid. Renal Pelvis: The innermost part where urine is collected before being transported to the bladder via the ureters. Key Functions of the Kidneys The kidneys perform a wide array of essential functions, including: Filtration of...

 The liver is one of the most essential organs in the human body, playing a crucial role in metabolism, detoxification, and overall health. It is the body’s largest internal organ, performing over 500 vital functions every day. Without the liver, survival would be impossible. Anatomy and Location of the Liver The liver is a reddish-brown, wedge-shaped organ located in the upper right side of the abdomen, just beneath the diaphragm and above the stomach. It weighs approximately 1.4 to 1.6 kilograms in adults and is divided into two main lobes: the right lobe and the smaller left lobe. The liver receives blood from two sources: Hepatic Artery: Supplies oxygen-rich blood. Portal Vein: Brings nutrient-rich blood from the digestive organs. These blood supplies enable the liver to carry out its diverse range of functions efficiently. Key Functions of the Liver The liver is a multitasking powerhouse, responsible for numerous processes critical to maintaining the body’s balance and healt...

 The human heart is a vital organ that serves as the powerhouse of the circulatory system. It beats approximately 100,000 times a day, pumping blood throughout the body to deliver oxygen and nutrients to tissues while removing carbon dioxide and waste products. This constant process is essential for maintaining life. Anatomy of the Heart The heart is a muscular organ located slightly to the left of the chest, protected by the ribcage. It is roughly the size of a fist and weighs about 250-350 grams in adults. The heart is divided into four chambers: Right Atrium: Receives deoxygenated blood from the body via the superior and inferior vena cava. Right Ventricle: Pumps the deoxygenated blood to the lungs for oxygenation through the pulmonary arteries. Left Atrium: Receives oxygen-rich blood from the lungs via the pulmonary veins. Left Ventricle: Pumps oxygen-rich blood to the rest of the body through the aorta. These chambers are separated by valves that ensure blood flows in the ...

 The human eyeball is one of the most fascinating and complex organs in the body. It functions as a highly specialized optical device that allows us to perceive the world around us. From appreciating the colors of a sunset to reading a book, the eye plays an essential role in daily life. Structure of the Eyeball The eyeball is a spherical structure approximately 24 millimeters in diameter. It consists of three main layers: Outer Layer : The sclera and cornea form the outermost layer. The sclera is the white, protective part of the eye. The cornea is a transparent, dome-shaped structure at the front that helps focus light into the eye. Middle Layer : This includes the choroid, ciliary body, and iris. The choroid is a vascular layer that supplies oxygen and nutrients to the retina. The ciliary body controls the shape of the lens for focusing. The iris is the colored part of the eye that regulates the amount of light entering the eye through the pupil. Inner Layer : The retina is...