Excretory system

04/11/2020

Excretory system

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ramon leyva, allan vazquez, yahir martinez

Video

Pre-Explication

¿Whats about?

The excretory system consists of organs which remove metabolic wastes and toxins from the body. In humans, this includes the removal of urea from the bloodstream and other wastes produced by the body.

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Major Functions

-The excretory system functions as the bulwark and balance to the digestive system. -The excretory system ensures that homeostasis is maintained. -Regulates the fluid balance of the body, maintaining adequate salt and water levels. -Remove metabolic wastes and toxins from the body.(carbon dioxide, water, salts, urea , uric and acid ammonia)

-structure-

Kidney structure

Is one of the most important parts of the excretory system, his main role is to mantain the homeostasis. Remove urea, which results from the breakdown of proteins and uric acid from the breakdown of nucleic acids

NEPHRON

Formation of the Urine

WHAT IS IT?

Filtration involves the transfer of soluble components, such as water and waste, from the blood into the glomerulus. Reabsorption involves the absorption of molecules, ions, and water that are necessary for the body to maintain homeostasis from the glomerular filtrate back into the blood.

URINE EXCRETION

Second Step

First Step

Third Step

The function of the bladder is to collect and store urine from the kidneys before the urine is eliminated through urination. Filling of the bladder triggers the sensation of needing to urinate. When a conscious decision to urinate is made, the detrusor muscle in the bladder wall contracts and forces urine out of the bladder and into the urethra.

Ureters are tube-like structures that connect the kidneys with the urinary bladder. Each ureter arises at the renal pelvis of a kidney and travels down through the abdomen to the urinary bladder.

Somatic nerves control the sphincter at the distal end of the urethra. This allows the opening of the sphincter for urination to be under voluntary control.

SECONDARY EXCRETORY ORGANS

Working with other systems

Digestive

Circulatory

Nervouse

Blood traveling back to the heart passes through the kidneys in the urinary system. The kidneys clean the blood and control the amount of salt, water, and other substances in the blood.

Then the -nervous system- indicates the need to expel these substances, such as urine.

The digestive system digests food and absorbs nutrients. These nutrients reach cells throughout the body through the blood. The wastes are transferred to the blood, where they travel to the kidneys

Complete Excretory system

Infections

Renal insufficiency is poor function of the kidneys that may be due to a reduction in blood-flow to the kidneys caused by renal artery disease. Proper kidney function may be disrupted, however, when the arteries that provide the kidneys with blood become narrowed, a condition called renal artery stenosis. Some patients with renal insufficiency experience no symptoms or only mild symptoms. Others develop dangerously high blood pressure, poor kidney function, or kidney failure that requires dialysis. Can usually be diagnosed via duplex ultrasound scanning and other non-invasive tests.

INFO

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Fun Facts

-The kidneys filter all the blood in the body every 5 minutes. -Eliminate solid waste that remains after food is digested and water is extracted from the indigestible matter. -Kidney stones can be the size of a golf ball -The right kidney in your body, typically, sits a bit lower than its left counterpart. -The number of blood filters or nephrons inside your kidney may be as many as 6.487 billion or even more!

Links

-Datos curiosos sobre el sistema excretor. (n.d.). Retrieved November 04, 2020, from https://leftwomenut.ru/cocina/21682-datos-curiosos-sobre-el-sistema-excretor.html-Foundation, C. (n.d.). 12 Foundation. Retrieved November 04, 2020, from https://flexbooks.ck12.org/cbook/ck-12-college-human-biology-flexbook-2.0/section/18.2/primary/lesson/organs-of-excretion-chumbio -Excretory System: Organs, Functions, Videos with Questions. (2020, May 19). Retrieved November 04, 2020, from https://www.toppr.com/guides/biology/excretory-products/human-excretory-system/ -Admin. (2020, October 12). Excretion And Its Importance: Why is it important and how does it happen. Retrieved November 04, 2020, from https://byjus.com/biology/excretion-and-its-importance/ -Excretory System Facts, Worksheets & Functions For Kids. (2019, December 09). Retrieved November 04, 2020, from https://kidskonnect.com/science/excretory-system/ -Libretexts. (2020, October 28). 19.4: Ureters, Urinary Bladder, and Urethra. Retrieved November 04, 2020, from https://bio.libretexts.org/Bookshelves/Human_Biology/Book:_Human_Biology_(Wakim_and_Grewal)/19:_Urinary_System/19.4:_Ureters_Urinary_Bladder_and_Urethra -Libretexts. (2020, August 14). 24.2D: Nephron, Parts, and Histology. Retrieved November 04, 2020, from https://med.libretexts.org/Bookshelves/Anatomy_and_Physiology/Book:_Anatomy_and_Physiology_(Boundless)/24:__Urinary_System/24.2:_The_Kidneys/24.2D:_Nephron_Parts_and_Histology

Links

-Boundless. (n.d.). Boundless Anatomy and Physiology. Retrieved November 04, 2020, from https://courses.lumenlearning.com/boundless-ap/chapter/physiology-of-the-kidneys/-Datos curiosos sobre el sistema excretor. (n.d.). Retrieved November 04, 2020, from https://leftwomenut.ru/cocina/21682-datos-curiosos-sobre-el-sistema-excretor.html-CURIOSIDADES SOBRE EL APARATO EXCRETOR. (2012, October 10). Retrieved November 04, 2020, from https://elblogdetercerciclomd.wordpress.com/2012/10/10/curiosidades-sobre-el-sistema-excretor/ -UC Davis Health, V. (n.d.). Renal insufficiency. Retrieved November 04, 2020, from https://health.ucdavis.edu/vascular/diseases/renal_insufficiency.html

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