Lab Urinary
medulla
collects urine and excretes urine
deep in cortex
medulla
contains collecting ducts
medulla
Major calyx
receives urine from minor calyces and drains uring into renal pelvis
Column
medullary extensions of the renal cortex in between the renal pyramid
consists of lines of blood vessels and urinary tubes and fibrous material which allows cortex to better anchored
column
Hilum
where nerves enters and exits
vertical fissure in concave surface of the kidney
hilum
Renal pelvis
single large cavity that receives urine from the major calyces
drains urine into uterers
renal pelvis
Cortex
outermost region of kidney
uses filtration to form filtrate; contains renal corpulses
cortex
1. Rena corpuscle lies in the outer portion of cortex
2. Short nephron loop-extends to outer medulla
3. blood supply from peritobular capillaries that arise from efferent arterioles
4. creates urine with osmolarity
cortical nephron
1. Renal corpuscle lies deep in renal cortex close to medulla
2. long nephron loops-deepest region of medulla
3. blood supply from peritotubular caps and vasa recta
4. has thin ascending limb followed by thick ascending limb
5. secretes very diluted or very concentrated urine
Juxtamedullary nephron
Micturition
act of emptying the bladder
requires actions from voluntary and involuntary muscles
micturition
Superficial layer of Kidney
Renal fascia-dense CT; anchors kidney to abdominal cavity
Middle Kidney structure
Adipose layer-protects kidney from trauma; holds it in place
Deep kidney structure
renal capsule-dense irregular tissue that runs continuous with the uterer
Trigone
sm triangular area on the floor of the bladder that contains 3 openings; 2 utereral opeings and internal urethral orfice
Urethra
small tube leading from internal urethral orfice on the bladder floor to the exterior
Ureters
transports urine from the renal pelvis to the bladder using peristatic waves, hydrostatic pressure adn gravity to move urin
Detrusor Muscle
contracts when it receives impulses from the PNS from mictruition center
internal and external sphincter
when dentrusor contracts, internal sphincter urethral relaxes to allow urination and at the same time the mictruition center inhibits somatic motor neurons that innervate the skeletal muscle in external urtheral sphincter