Final answer:
Yes, a fistula, specifically an arteriovenous fistula, can be used to obtain blood for treatments like hemodialysis.
Step-by-step explanation:
Can a fistula be used to obtain blood? Yes, a fistula, specifically an arteriovenous fistula (AV fistula), is often created surgically for patients undergoing hemodialysis, a treatment for kidney failure. An AV fistula connects an artery and a vein directly, which helps the vein grow larger and stronger so it can handle repeated needle insertions for blood withdrawal and dialysis treatment.
As for the additional statements provided for reference:
- A fetus can produce urine: True. Fetal urination starts around the 10th to 12th week of gestation and plays a role in maintaining the amniotic fluid balance.
- The umbilical artery carries oxygenated blood to the fetus: False. The umbilical artery actually carries deoxygenated blood and waste products from the fetus to the placenta.