Unit 4 Prelab objectives

What are the components of the urinary system?

• Kidneys

• Ureters

• Urinary bladder

• Urethra

What is the functional unit of the kidney?

The nephron

Kidney

Ureter

Urinary bladder

Renal artery

Renal vein

What is the renal tissue composed of?

Cortex and medulla

What is another name for the medulla?

Renal pyramids

what is the function of the kidney?

• Remove waste from the blood

• Forms urine

• Regulates fluid and electrolytes

• Assists in acid—base balance

Where is urine collected?

Calyces

Renal capsule

Renal cortex

Medulla

Renal pyramid

Renal papilla

Renal column

Major calyx

Minor calyx

Renal pelvis

What is the function of the nephron?

This is where filtration of blood occurs as well as reabsorption and secretion that occurs in the formation of urine.

What is the glomerulus?

The glomerulus is a specialized capillary bed.

Nephron loop (of Henle)

Glomerulus

Glomerulus (Bowman’s) capsule

Renal corpuscle

Proximal convoluted tubule

Distal convoluted tubule

Descending limb of nephron

Ascending limb of nephron

Vasa recta

Collecting duct

Afferent arteriole

Efferent arteriole

Arcuate artery

Arcuate vein

Interlobular artery

Interlobular vein

Peritubular capillaries can

Proximal convoluted tube

Distal convoluted tube

Glomerulus

Glomerular (Bowman’s) capsule

Tubule