The big number one
on the upper back, either side of the spine.
what are the kidneys shaped like?
BEANS!
How does SA:V ratio relate to the excretory system?
It increases the efficiency in which it gets rid of waste
What is the main function/purpose of the excretory system?
to remove excess and unwanted substances from the body and to maintain a stable internal environment.
This tube carries urine from the kidneys to the bladder
Ureter
what is the function of the kidneys?
Their role is to filter blood, reabsorb useful substances and secrete the unuseful ones. as well as to mix the urea with water and other solutes, forming urine.
what is mixed with urea to create urine?
water
What are the additional excretory system organs––not including those within the the urninary tract?
liver, lungs and digestive tract.
Someone is very dehydrated, what happens to their urine?
Becomes more highly concentrated, and a deeper colour
the urine remains here until its ready to be emptied
Bladder
What is an epithelial cell?
foundational cells that form tissues covering all external and internal surfaces of the body, including skin, organs, and cavities
what is the main functions of a nephron?
filtration, reabsorption, or secretion
Explain how skin is a part of the excretory system
eliminates waste through sweat––excess water and salts. Helps with temperature regulation as sweat evaporates from the skin it lowers the body temperature
Function of the liver within the excretory system?
function of the liver is to convert excess amino acids into ammonia through the process of deamination.
where does the urine travel out of when excreted from the body?
Urethra
what is the function of the Bowmans capsule?
Filtration
What waste does the body produce during cellular processes?
carbon dioxide from respiration, toxins, and nitrogenous waste from protein breakdown
What does the urinary tract consist of?
kidneys, ureters, bladder, urethra.
What is a nephron?
a functional unit of the kidney consisting of a glomerulus and tubule system through which filtrate passes and urine is produced
Blood is delivered into the kidneys by a pair of blood vessels called _____ __________
renal arteries
what is the digestive tract?
The pathway of organs that food and liquids travel through after being swallowed, leading to digestion and elimination. In this organ, waste materials are released from the body in the form of faeces.
What is the difference between efferent and afferent capillaries?
Efferent–Outgoing capillaries that carry blood away from the glomeruli of nephrons( ie Deliver/take blood away from the nephron)
afferent–Incoming capillaries that deliver blood to the glomeruli of nephrons ( ie deliver/take blood to the nephron)
______ is toxic to cells and thus unable to travel through the bloodstream, the liver breaks this down into urea, which is then safely transported through the bloodstream to the kidneys.
Ammonia
What structure surrounds the glomerulus?
Bowman's capsule
What's the function of the liver?
The function of the liver is to convert excess amino acids into ammonia through the process of deamination.