PNB 2265 lab 9: urinary system
Practice Questions and Answers.
functions of the urinary system - Answer removal of waste from the body
regulation of water and electrolyte balance: by regulating urine output
what are the organs in the urinary system - Answer kidneys
ureters
urinary bladder
urethra
structure of the kidneys - Answer vessels, ureter, and nerves connect to the medial surface
blood comes in via renal artery and leaves via renal vein
has an outer fibrous renal capsule
cortex and medulla
renal columns project into the medulla and subdivide it into renal pyramids
renal pelvis: where the ureter attaches
minor and major calyx
ureter structure - Answer fibromuscular tube that conducts urine from the kidneys to the
bladder
begins at the renal pelvis
how is urine propelled along the ureter? - Answer peristaltic contractions
, urinary bladder structure and function - Answer function: reservoir for urine
3 layers of expandable smooth muscle
- called detrusor muscle
-during urination, the detrusor contracts to expel urine
ureters enter each side via ureteral openings
urethra structure: male vs female - Answer fibromuscular tube that conveys urine out of the
body
male: longer and has urinary and reproductive function
female: shorter and only urinary function
nephron: what is it and what is the structure? - Answer the functional filtration unit of the
kidney
consist of renal corpuscle and renal tubule
corpuscle:
- glomerulus and bowman's capsule
renal tubule:
- proximal and distal convoluted tubule, and loop of henle
renal corpuscle - Answer glomerulus and bowman's capsule
glomerulus - Answer tiny ball of capillaries in the kidney. blood filters out of this into
bowman's capsule
3 components:
-fenestrations: small pores in the capillary endothelium
- basement membrane
-filtration slits: narrow spaces
Practice Questions and Answers.
functions of the urinary system - Answer removal of waste from the body
regulation of water and electrolyte balance: by regulating urine output
what are the organs in the urinary system - Answer kidneys
ureters
urinary bladder
urethra
structure of the kidneys - Answer vessels, ureter, and nerves connect to the medial surface
blood comes in via renal artery and leaves via renal vein
has an outer fibrous renal capsule
cortex and medulla
renal columns project into the medulla and subdivide it into renal pyramids
renal pelvis: where the ureter attaches
minor and major calyx
ureter structure - Answer fibromuscular tube that conducts urine from the kidneys to the
bladder
begins at the renal pelvis
how is urine propelled along the ureter? - Answer peristaltic contractions
, urinary bladder structure and function - Answer function: reservoir for urine
3 layers of expandable smooth muscle
- called detrusor muscle
-during urination, the detrusor contracts to expel urine
ureters enter each side via ureteral openings
urethra structure: male vs female - Answer fibromuscular tube that conveys urine out of the
body
male: longer and has urinary and reproductive function
female: shorter and only urinary function
nephron: what is it and what is the structure? - Answer the functional filtration unit of the
kidney
consist of renal corpuscle and renal tubule
corpuscle:
- glomerulus and bowman's capsule
renal tubule:
- proximal and distal convoluted tubule, and loop of henle
renal corpuscle - Answer glomerulus and bowman's capsule
glomerulus - Answer tiny ball of capillaries in the kidney. blood filters out of this into
bowman's capsule
3 components:
-fenestrations: small pores in the capillary endothelium
- basement membrane
-filtration slits: narrow spaces
