Renal System - Introduction + Homeostasis

Question 1

What is homeostasis

Answer 1

Maintaining internal environment despite external changes

Question 2

What system is involved with homeostasis

Answer 2

Receptors - detect change
Co-ordinator - receive info and send a signal
Effector - trigger a response for condition to return to normal

Question 3

Negative + positive feedback

Answer 3

Negative - body detect change in level, does something to revert this change (blood glucose)

Positive - body detect change, but promote change (labour where more oxytocin produce when baby head touch cervix)

Question 4

Role of kidney

Answer 4

Removal of nitrogenous waste
Osmoregulation

Question 5

All component in urinary system

Answer 5

Renal artery - deliver unfiltered blood to kidney for filtration
Renal vein - deliver filtered blood to rest of body

Ureter - deliver urine produce in kidney to bladder
Bladder - hold onto urine until excreted at conscience
Urethra - deliver urine store in bladder out of body

Question 6

All component in kidney

Answer 6

Renal capsule - protection to kidney

Cortex - start of nephron, ultrafiltration + reabsorption of glucose, amino acid, etc

Medulla + renal pyramid - osmoregulation

Renal pelvis - collects urine from all renal calyx from collecting duct

Question 7

Structure of nephron

Answer 7

Glomerulus, Bowman’s capsule
Proximal convoluted tubule
Loop of Henle, (ascending + descending limb)
Distal convoluted tubule
Collecting duct

Question 8

How glomerulus + collecting duct look under microscope

Answer 8

Glomerulus - has many black lines + very visible
-also has large space around as bowman capsule

Collecting duct - large lumen