Lab: Urinary System

Renal capsule

Renal capsule

fibrous connective tissue that surrounds each kidney

Renal cortex

surrounds the medulla

Renal medulla

area of kidney where filtration takes place

Medullary pyramids

where the medulla splits into sections

Kidney papilla

location where medullary pyramids empty into minor calyx

Renal columns

structures between the pyramids and which anchor the cortex

Minor calyx

located directly below the renal papillae and collects urine from pyramid

Major calyx

minor calyces converge to form this calyx

Renal pelvis

center of the kidney where urine collects

Ureters

transports urine from kidneys to urinary bladder

Urinary bladder

expandable muscular sac, makes space for urine

Trigone

triangular region of the base of the urinary bladder

Kidney blood flow

renal arteries/veins to segmental arteries to interlobar arteries/veins to arcuate arteries/veins to cortical radiate arteries/veins

Urethra

contains internal and external urethral sphincter and micturition

Internal urethral spinchter

regulates involuntary control of urine

External urethral spinchter

regulates voluntary control of urine

Micturition

process where urine is expelled from the body

Kidney

the filtration system

In the loop of Henle the ascending limb is:

Impermeable

In the loop of Henle the descending limb is:

Permeable

DCT

responds to hormones (ADH and Aldosterone), causes homeostatic changes

ADH in the collecting ducts causes:

aquaporins to open