Urinary system Devlin marshall & DJ Taylor

What is the urinary system? A waste system that expels waste/urine from the body by filtering the blood and Excrete unwanted waste

Two bean shaped organs About the size of your fist Responsible for filtering the waste from the blood Inside the kidneys are the nephrons What are kidneys

Nephrons Removes most substances from the blood except larger molecules such as red blood cells or proteins The blood takes back what is needed and leaves waste to be sent to the ureters Functional unit for the kidneys

ureter Acts as the transport for waste from the kidneys to the bladder Averages from 10” to 12” in a adult male Is made of a mucous, muscular and a fibrous layer

Bladder A muscular sac in the pelvis that holds urine allowing urination to be voluntary and not as often Can contract to force urine out through the urethra Usually the size of a grapefruit but can hold much more if needed

Bladder cont. Is located posterior to the pubic symphysis and cradled by the other pelvic bones Formed of three layers, the mucosa (waterproof layer), the lamina propria (blood vessels), and the detrusor layer (muscle layer)

Characteristics of urine (also called collecting duct) White to yellow in color verage Ph balance of 6.0 Specific gravity of Approximately 95% water and 5% solutes Solutes include sodium, potassium calcium and magnesium with many more that are specific to the person

Difference Between Male and female The male urethra consists of penile and prostatic parts Male urethra is about 20cm in length and the female is about 4cm in length Male urethra carries semen as well as urine to the exterior (opens out the tip of the penis) Female urethra only carries urine to the exterior It opens by urinary aperture in front of vaginal aperture (aperture-An opening, hole, or gap)

Hypothalamus The hypothalamus controls the pituitary gland and thus body homeostasis Stimulates the ADH that is stored and released when the hypothalamus senses high osmotic pressure(low water in blood)

Question #1 Which of the following is a function of the kidney? A.Filters waste from the blood B.Detoxifies Chemicals C.Makes proteins important for blood clotting

A

Question #2 Which of the following is not considered part of the male urethra? A.Penile B.Prostatic C.Vasapore

C

Question #3 Ate what part is waste removed from the blood… A.nephrons B.bladder C.urethra

A

Question #4 Urine is expelled from the urine bladder by? A.Excretion B.Micturition C.Filtration

B

Question #5 The functional unit of the kidney is……… A.Nephron B.Ureter C.Kidney Stone

A

Question #6 Which system functions in the excretion of soluble nitrogenous waste? A.Urinary B.Pulmonary C.Integumentary

A

Question #7 ADH is produced in the? A.Adrenal Cortex B.Posterior Pituitary gland C.Hypothalamus

C

Question #8 The urinary bladder.... A.Is located posterior to the pubic symphysis B.Is connected to the ureter C.Have a bundle of skeletal muscle in its wall

A

Question #9 In which area can the term urine be correctly used? A.Collecting duct B.Nephron C.Loop of Henle

A

Question #10 The middle layer of the urinary bladder is identified as…? A.Mucous Coat B.Submucous Coat C.Muscular Coat

B