Question

lo 6.1. what are the ureters? thin tubes that connect the urinary bladder to the urethra. tiny blood vessels that filter the blood in the kidneys. small sacs in the kidneys that filter urine. thin tubes that connect the kidneys to the urinary bladder. flexible tubes that carry urine from the bladder to the outside of the body.

Explanation:

The ureters are thin tubes that connect the kidneys to the urinary bladder. This is a basic anatomical fact in the study of the urinary system. The other options describe different parts: the thin tubes connecting the bladder to the urethra are not ureters; tiny blood vessels filtering blood in the kidneys are part of nephrons; small sacs filtering urine in kidneys are not ureters; and the flexible tubes carrying urine from the bladder to outside the body is the urethra.

Answer:

Thin tubes that connect the kidneys to the urinary bladder.