-
Kemrick Tiu posted an update in the group
(MT 30) Medical Histology – F (LAB) 1 year, 11 months ago KEMRICK C. TIU
BSMT – II
MT 30 LAB – F
—————–
Good Day, everyone!! Attached below is a picture of my Activity 6 (The Urinary System). Included in this post are descriptions and some functions of the urinary system posted.
—————–
URINARY SYSTEM
The urinary system serves as the body’s filtration system, eliminating toxins and waste products through urine. It comprises several organs, including the kidneys, ureters, bladder, and urethra. The kidneys filter blood, separating waste from nutrients, while the ureters carry urine from the kidneys to the bladder. The bladder stores urine until it is expelled through the urethra. Each organ plays a vital role in filtering, storing, and removing liquid waste from the body. Dysfunction at any stage of this process can affect normal urination (Cleveland Clinic, 2023).
——————
––KIDNEY––
The kidneys, two bean-shaped organs located below the rib cage, filter about a half cup of blood every minute to remove wastes and extra water, creating urine. Urine flows to the bladder through the ureters. The kidneys help balance water, salts, and minerals, remove acid, and produce hormones that control blood pressure, create red blood cells, and maintain strong bones. Each kidney contains about a million nephrons, which filter blood through the glomerulus and reabsorb needed substances while removing wastes. Blood enters the kidneys via the renal artery and exits through the renal vein, with about 150 quarts of blood filtered daily, resulting in 1 to 2 quarts of urine (National Institute of Diabetes and Digestive and Kidney Diseases, 2018).––URETER––
Each ureter is a 25 cm long tube that transports urine from the renal pelvis to the urinary bladder, running along the posterior abdominal wall. The ureter’s wall has three layers: an outer fibrous coat of connective tissue for support, a middle muscular coat with smooth muscle for peristalsis, and an inner mucosa layer of transitional epithelium that secretes mucus to protect its surface (National Cancer Institute, n.d.).
––URINARY BLADDER––
The urinary bladder is a temporary storage reservoir for urine located in the pelvic cavity. Its inner lining is a mucous membrane of transitional epithelium with folds called rugae that allow expansion. The submucosa layer supports the mucous membrane with connective tissue and elastic fibers. The muscularis layer, composed of smooth muscle called the detrusor muscle, expels urine through contraction. The bladder’s outer layer is parietal peritoneum on the top and fibrous connective tissue elsewhere. The trigone, a triangular area on the bladder floor, has openings from the ureters and the urethra, with flaps of mucosa acting as valves to prevent urine backflow and the internal urethral sphincter controlling urine release (National Cancer Institute, n.d.).
——————–
REFERENCES:—–Cleveland Clinic. (2023, June 13). Urinary system. https://my.clevelandclinic.org/health/body/21197-urinary-system
—–National Cancer Institute. (n.d.). Ureters. https://training.seer.cancer.gov/anatomy/urinary/components/ureters.html
—–National Cancer Institute. (n.d.). Urinary bladder. https://training.seer.cancer.gov/anatomy/urinary/components/bladder.html
—–National Institute of Diabetes and Digestive and Kidney Diseases. (2018, June). Your kidneys & how they work. https://www.niddk.nih.gov/health-information/kidney-disease/kidneys-how-they-work
Recently Active Members
