Life Sciences Topic 8 Unit 2

The main organs of the urinary system are the kidneys.

• true

• false

The kidneys receive oxygenated blood from the aorta via the renal arteries.

• true

• false

Renal veins carry deoxygenated blood from the kidneys to the inferior vena cava.

• false

• true

A narrow tube called the ureter transports the urine from each kidney to the bladder where the urine is stored.

• true

• false

The bladder is not a muscular bag.

• true

• false

The urine passes through a wider tube called the

• urethra

• ureter

Sphincter muscles (circular muscles) contract to close the urethra and relax to allow urine to flow out of the body in the process of urination.

• true

• false

is surrounded by a membrane called the renal capsule.

• kidney

• liver

Near to the centre of the concave side of the kidney is the hilum where the ureter leaves the kidney.

• true

• false

The renal artery enters the kidney and the renal vein leaves the kidney via the hilum.

• true

• false