week 9 - renal system

Question 1

role of kidneys?

Answer 1

blood filtration + urine production

Question 2

role of ureters?

Answer 2

transport of urine

Question 3

role of urinary bladder?

Answer 3

storage of urine

Question 4

role of urethra?

Answer 4

elimination of urine

Question 5

role of nephrons?

Answer 5

join to collecting ducts (ducts connect to renal pelvis via calices)

Question 6

role of glomerulus?

Answer 6

• FILTRATION: water, amino acids, glucose, urea
• REABSORPTION (proximal tubule, loop of henle, distal tubule, collecting duct)
• SECRETION (proximal tubule, loop of henle, distal tubule)

Question 7

What is the storage phase?

Answer 7

• efferent signals
• sympathetic NS
• somatic NS

Question 8

What is the urination reflex process?

Answer 8

• increased stretch signals from trigone
• parasympathetic stimulation: detrusor contracts
• sympathetic: internal sphincter relaxes
• somatic signaling inhibited: external sphincter relaxes