Urinary System (Functions)

Question 1

kidney

Answer 1

main function - filter blood

Question 2

blood pressure

Answer 2

regulates blood to nephrons

increas in BP increases amount of filtrate and vice versa

Question 3

membrane condition

Answer 3

condition of bowmans capsule

membrane inflammed = less filtrate

Question 4

glomerular filtrate

Answer 4

product of filtration

includes water, sugars, salts, toxins, urea, and acid

Question 5

active re-absorption

Answer 5

accomplished by enzymes in the peritubular capollaries

Question 6

passive re-absorption

Answer 6

diffusion

osmosis

Question 7

ureters

Answer 7

transport urine from the pelvis to the bladder

Question 8

methods of transportation

Answer 8

peostaltic contractions of the muscular walls of the ureters (paristalis)
hydrostatic pressure
gravity

Question 9

bladder

Answer 9

function is to store urine prior to micturition

Question 10

micturition

Answer 10

commonly known as urination

controlled by a combination of voluntary and involuntary activities

Question 11

urethra

Answer 11

the terminal portion of the urinary system
passageway for discharging urine from the body
male urethra also serves as duct for various reproductive secretions

Question 12

urine

Answer 12

composed of about 95% water

remaining 5% consists of solutes derived from cellular metabolism and outside such as drugs

Question 13

remaining 5%

Answer 13

urea, creatinine, uric acid, urobilinogen

Question 14

urea

Answer 14

composes 60-90% of all nitrogen - containing material in urine

Question 15

creatinine

Answer 15

derived from the breakdown of creatine phosphate in muscle tissue

Question 16

uric acid

Answer 16

product of catabolism of nucleic acids derived from food or cellular destruction

Question 17

urobilinogen

Answer 17

bile pigment derived from the breakdown of hemoglobin

Question 18

urine volume

Answer 18

affected by fluid intake, blood pressure, blood osmotic pressure, diet temperature, diruetics, mental state and health