Bio Lab 242 Quiz #8 (Urinary System)

removal or nitrogenous waste

1st function in the urinary system

maintain electrolyte, pH, and fluid balances in blood

2nd function of the urinary system

kidney

ureter

urinary bladder

urethra

renal artery

renal vein

adrenal gland

ureters

urinary bladder

internal urethral sphincter

external urethral sphincter

involuntary

is the internal urethral sphincter voluntary or involuntary?

voluntary

is the external urethral sphincter voluntary or involuntary?

stimulated by stretching of the bladder walls, activating stretch receptors

what stimulus triggers the micturition reflex?

renal cortex

renal pyramid of the medulla

papilla of pyramid

renal column

renal pelvis

major calyx

minor calyx

ureter

Aorta

1st step kidney blood flow

renal artery

2nd step kidney blood flow

segmental artery

3rd step kidney bloodflow

interlobar artery

4th step kidney blood flow

arcuate artery

5th step kidney bloodflow

cortical radiate artery

6th step kidney blood flow

afferent arteriole

7th step kidney bloodflow

glomerulus (capillaries)

8th step kidney blood flow

efferent arteriole

9th step kidney bloodflow

peritubular capillaries and vasa recta

two 10th step kindey bloodflow

cortical radiate vein

after peritubular capillaries

either cortical radiate vein or arcuate vein

after vasa recta

arcuate vein

after cortical radiate vein

interloper vein

13th step kidney blood flow

renal vein

14th step kidney blood flow

inferior vena cava

15th step kidney blood flow

functional unit of the kidney

what is a Nephron?

consists of a glomerulus and renal tubules

what 2 structures make up a nephron?

filtration, tubular secretion, tubular reabsorption

what are the processes of urine formation?

passive process in which blood passes from the glomerular bed into the glomerular capsule

filtration urinary def

filtrate components move through the tubule cells and return to blood in capillaries

tubular reabsorption urinary def

substances move from blood of capillaries through tubular cells into filtrate (reverse of reabsorption)

tubular secretion urinary def

Loop of Henle

descending limb

M

proximal convoluted tubule

afferent arteriole

to the right of I, going down

efferent arteriole

right below G, going up

glomerulus

H

glomerular capsule

G

distal convoluted tubule

collecting duct

R

cortex

J

medulla

K