renal system. urogenital system functions filtering of blood, removal of wastes and metabolites ...
TRANSCRIPT
Renal system
Urogenital System FunctionsFiltering of blood, Removal of wastes and
metabolitesRegulation of – blood volume and composition– blood cell synthesis
Synthesis of Vitamin DReproduction and sexual function
URINARY SYSTEM ORGANS
• KIDNEYS (2)• URETERS (2)• URINARY BLADDER• URETHRA
Urinary System
Based on: Mader, S., Inquiry Into Life, McGraw-Hill
KIDNEYS (2)
URETERS (2)
URINARY BLADDER
URETHRA
Kidney External AnatomyIt is bean-shaped.RetroperitonealExtend from T12 – L3The right kidney is lower than the left.At its hilum; ureters, renal blood vessels, lymphatics, and nerves enter and exit.At its superior end lies the adrarenal gland.
Right kidney
Left kidney
26-7
Internal Anatomy of Kidneys
Cortex: Outer area– Renal columns
Medulla: Inner area– Renal pyramids
Calyces– Major: Converge to form
pelvis– Minor: Papillae extend
Nephron: Functional unit of kidney.
Ureters
Muscular tubes through which urine flow from kidneys to urinary bladder.Lie on the posterior abdominal wall, Descend at tips of transverse process of lumber vertebrae.
Urinary bladder
Muscular organ pyramidal in shape.Lies in the pelvic cavity.Ureters are attached to it at the junction of superior wall and posterior wall (base).Inferiorly it is continuous with the urethra.
Urenary bladder
urethra
UrethraTransports urine from bladder to outside of bodyThe female urethra is about 4 cm. long, placed behind the symphysis pubis.Opens in the vestibule anterior to vaginal orifice. The male urethra varies from 17.5 to 20 cm., it is divided into three portions, the prostatic, membranous, and penile.It transmits urine and semen
urethra