Anatomy And Physiology Of Urinary Bladder Pdf

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anatomy and physiology of urinary bladder pdf

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Urinary System Anatomy and Physiology

In this article, we shall look at the anatomy of the bladder — its shape, vasculature and neurological control. The appearance of the bladder varies depending on the amount of urine stored. When full, it exhibits an oval shape, and when empty it is flattened by the overlying bowel. Urine enters the bladder through the left and right ureters, and exits via the urethra. Internally, these orifices are marked by the trigone — a triangular area located within the fundus. In contrast to the rest of the internal bladder, the trigone has smooth walls this is explained by the different embryological origin: the trigone is developed by the integration of two mesonephric ducts at the base of the bladder.

The ureter is a tube that carries urine from the kidney to the urinary bladder. There are two ureters, one attached to each kidney. The upper half of the ureter is located in the abdomen and the lower half is located in the pelvic area. The ureter is about 10 to 12 inches long in the average adult. The tube has thick walls composed of a fibrous, a muscular, and a mucus coat, which are able to contract. If any of these disorders occur, the passage of urine is blocked and can cause pyelonephritis inflammation of the kidney due to infection , loss of renal function, or renal calculi kidney stones. Treatment is possible through insertion of a catheter a special tube , a stent a support to keep vessels or tubes open , or through surgery.

Renal system , in humans , organ system that includes the kidneys , where urine is produced, and the ureters , bladder , and urethra for the passage, storage, and voiding of urine. In many respects the human excretory, or urinary, system resembles those of other mammalian species, but it has its own unique structural and functional characteristics. The terms excretory and urinary emphasize the elimination function of the system. The kidneys, however, both secrete and actively retain within the body certain substances that are as critical to survival as those that are eliminated. The system contains two kidneys, which control the electrolyte composition of the blood and eliminate dissolved waste products and excess amounts of other substances from the blood; the latter substances are excreted in the urine, which passes from the kidneys to the bladder by way of two thin muscular tubes called the ureters. The bladder is a sac that holds the urine until it is eliminated through the urethra.

Anatomy and Function of the Urinary System

Urinary bladder. The urinary bladder is a musculo-membranous hollow organ that acts as a reservoir for the urine. In the newborn it is ovoid and lies chiefly in the abdomen, adjacent to the ventral abdominal wall. Its base is located behind the symphysis pubis. With growth and development it assumes a lower position.

Urinary tract : The transport and removal of urine from the body follows the urinary tract. The organs, tubes, muscles, and nerves that work together to create, store, and carry urine are referred to as the urinary system, which is another name for the renal system. The renal system filters the plasma of blood and regulates blood volume by excreting excess water in the form of urine. Urine transport follows a path through the kidneys, ureters, bladder, and urethra, which are collectively known as the urinary tract. Urine is essentially water, ions, and secreted molecules that leave the collecting duct of the many nephrons of the kidney and flow into the ureters. The ureters are two tubes that drain urine from the kidneys to the bladder.

The urinary system consists of two kidneys, two ureters, a urinary bladder , and a urethra. The kidneys alone perform the functions just described and manufacture urine in the process, while the other organs of the urinary system provide temporary storage reservoirs for urine or serve as transportation channels to carry it from one body region to another. The kidneys, which maintain the purity and constancy of our internal fluids, are perfect examples of homeostatic organs. The urethra is a thin-walled tube that carries urine by peristalsis from the bladder to the outside of the body. Every day, the kidneys filter gallons of fluid from the bloodstream. The normal physiology that takes place in the urinary system are as follows:. In 24 hours, the marvelously complex kidneys filter some to liters of blood plasma through their glomeruli into the tubules.

The Urinary Bladder

Click Image to Enlarge. The body takes nutrients from food and changes them to energy. After the body has taken the food components that it needs, waste products are left behind in the bowel and in the blood. The kidney and urinary systems help the body to get rid of liquid waste called urea. Urea is produced when foods containing protein such as meat, poultry, and certain vegetables are broken down in the body.

То есть… как ты их вскрываешь. Сьюзан улыбнулась: - Уж ты-то мог бы это понять. Это все равно что изучать иностранный язык. Сначала текст воспринимается как полная бессмыслица, но по мере постижения законов построения его структуры начинает появляться смысл.

Physiology of urinary bladder and urethra, normal and pathological

Urinary Bladder

Всю ответственность я беру на. Быстрее. Хейл выслушал все это, не сдвинувшись с места и не веря своим ушам. Хватка на горле Сьюзан слегка ослабла.

У нее была высокая стройная фигура с пышной грудью и по-юношески плоским животом. Дэвид шутил, что она может стать первой моделью для рекламы купальников, имеющей докторскую степень по прикладной математике и теории чисел. Через несколько месяцев оба начали подозревать, что обрели нечто такое, что может продлиться всю жизнь.


Ureters: The ureters carry urine approximately cm from the kidneys to the bladder for elimination. Gravity and peristaltic waves within the ureters propel urine.


Urinary bladder

2 Comments

  1. Leonela M. 13.06.2021 at 14:08

    The urinary bladder , or simply bladder , is a hollow muscular organ in humans and other vertebrates that stores urine from the kidneys before disposal by urination.

  2. Harold B. 16.06.2021 at 12:01

    Urine produced by the kidneys flows through the ureters to the urinary bladder, where is it stored before passing into the urethra and exiting the body.

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