Flashcards in Excreatory System Review Deck (28):
What is the main function of the excretory system?
The excretory system is responsible for the elimination of wastes produced by homeostasis
List the organs associated with the excretory system and the substances that each excretes.
Kidney, ureter, urinary bladder, urethra - urine, urea, excess water, sodium
Draw and label the three parts of the kindney
From the inside first
Pelvis, medulla, cortex
In biology, what words refers to the kidney?
Approximately what size is one kidney and where in the human body are they located?
The size of your palm
Located near lower abdomen
Do #6 on the review
Do #6 on the review
Describe the pathway of the filtrate and blood thorough the kidney and the nephron and the specific substances associated along the pathway.
Renal artery - glomerulus -capillaries - renal vein = blood
Bowmans capsule - loop of Henley - collecting duct = filtrate
A process in which the blood is filtered in the glomerulus so that the substances that are important can be retained and selectively reabsorbed by the body
The process by which water and dissolved substances are put back into the blood
The process by which these metabolic wastes are eliminated to maintain homeostasis
Look at question number 9
Look at question number the on the review
Means to maintain a balance in the body
How does the urinary system maintain homeostasis?
-regulates water and liquids in the blood
-regulates a pit
What are the functions of the urinary system?
Their function is to remove liquid wastes from the blood in the form of urine and keep a stable balance of salts and other substances in the blood
What is micturition?
Fancy science terminology for “urination”
Describe the ureters?
-collapsible tubes that allow urine to flow though it
-valves to prevent backflow
Describe the bladder?
-muscle sac for the temporary storage of urine
-has fold (reggae) different sizes
-can hold 500ml of liquid comfortably and a maximum of 1000ml in an adult
Describe the urethra?
Short tube with an involuntary controlled sphincter leading urine out of the body
Describe the colour, odour, and turbidity of normal urine
-Transparent or clear
-light yellow to amber
Consumed food with blue dye, such as frosting or candy
Brown or black urine
Eating certain beans like fava beans causes darkening of the urine because of their dopamine content.
Cloudy or white urine
Indicates a bacterial infection or sometimes in happens after sex
Why might a healthcare professional take a urine sample?
Colour, odour, drugs
Usually ya use dialysis when your kidneys fail.
It removes water, salt, and extra water to prevent them from building up in the body.
Describe kidney stones
Substances such as calcium, magnesium, or uric acid salts in the urine crystallize and form kidney stones.
Where does a transplanted kidney get replaced?
The transplanted kidney gets placed into your lower abdomen.
Describe ADH and how it controls kidney function
An anti-divertic hormone is released by the pituitary gland (in the brain) directly into the blood.
It cause kidneys to absorb water and excrete less urine