Lesson 2 Quarter 4 Bio 2

Excretory System

death

without the excretion of poisonous wastes build up in blood cells, and tissues, it could lead to serious illness and eventually ?

Skin, Lungs, Liver, Large Intestine, Urinary System

what is the structures of the excretory system?

Skin

Where does this happen? Wastes such as excess water, salt, urea, and uric acid are removed from the body in sweat

water, salt, urea, uric acid

what are some examples of waste found in the skin

sweat

Wastes such as excess water, salt, urea, and uric acid are removed from the body in the form of ?

Lungs

In which part does this happen? Excess carbon dioxide waste is removed from the body when we exhale

Carbon dioxide

What type of air is removed from the body due to its excessive amount?

Liver

detoxifies blood

Liver

Excretes bile

Liver

filters bacteria, alcohol, drugs, toxic substances

Liver

changes the toxic subtances into inactive or less toxic forms

Bile

contains worn-out RBC, bile salts, and cholesterol

Large Intestine

removes solid, undigested food from the body after it passes through the digestive system

rectum

waste is stored in ? until it is excreted from the body as solid waste

Urinary System

eliminates nitrogenous or liquid waste of the body in the form of urine

urine

the body eliminates nitrogenous or liquid waste in the form of what ?

Urinary System

maintains fluid and electrolyte balance

Urinary System

regulates the composition and volume of the blood and regulates blood pressure

Kidney

formation of urine by filtration, reabsorption, and secretion

Kidney

bean-shaped structure lying against the posterior abdominal wall at the level of the last thoracic and first three lumbar vertebrae

Nephron

waste filtering unit of the kidney

cortex and medulla

Nephron is found in the ?

Nephron

functional unit of the kidney

urine

Nephron forms ?

1.25 million

there are ? nephrons in each kidney

urine

final waste fluid excreted

urine

made up of water, urea, and various salts

1-1.5

how many liters of urine are produced every day?

1.5

how many liters is the average water intake per day

urea

waste product of protein and amino acid metabolism

uric acid

waste product of muscle metabolism purines by liver

creatine

waste product of muscle metabolism

Electrolytes

K, Na, Ca, Cl

water-soluble Vitamin B and C

what particular vitamins are part of the composition of urine?

aspirin, penicillin, sulfa

what drugs are included in the composition of urine?

Ureters

A pair of tubes extending from the kidneys to the urinary bladder for the passage of urine

Urinary Bladder

collapsible bag of smooth muscle lined with mucosa for the temporary storage of urine

Urethra

muscilo-membranous tube lined with mucosa with an opening to the exterior

urinary meatus

in urethra, there is an opening to the exterior called ?

longer

urethra is ? in males

shorter

urethra is ? in females

urine and semen

urethra functions as passage of ? in males

urine

urethra functions as passage of ? in females

Kidney stones

crystallization of mineral salts and uric acid that block passage of urine

Gout

form of arthritis where excess production of uric acid leads to deposits of crystals in joints

Bladder and Kidney Infections

caused by bacteria from colon/rectum entering urethra

heat, water, salts, CO2, urea

what are some examples of cellular waste?

Excretory System

responsible for removing waste products and excess substances (like water, salts, and urea) from the body, maintaining homeostasis and electrolyte balance.

Kidney

Primary organs for filtering blood and producing urine.

KIdney

They regulate blood pressure, electrolyte balance, and acid-base balance.

Kidney

Remove urea, excess water, and other metabolic waste.

Ureters

tubes that carry urine from the kidneys to the bladder.

Bladder

Stores urine until it is ready to be excreted.

Urethra

The tube through which urine is excreted from the bladder to the outside of the body.

Nephron

filter blood and form urine

glomerulus

filters blood to form urine