structure of kidney label parts
Answers
Answer:
The kidneys are highly vascular (contain a lot of blood vessels) and are divided into three main regions: renal cortex (outer region which contains about 1.25 million renal tubules), renal medulla (middle region which acts as a collecting chamber), and renal pelvis (inner region which receives urine through the major
Explanation:
The kidneys are at the back of the abdominal cavity, with one sitting on each side of the spine.
The right kidney is generally slightly smaller and lower than the left, to make space for the liver.
Each kidney weighs 125–170 grams (g) in males and 115–155 g in females.
A tough, fibrous renal capsule surrounds each kidney. Beyond that, two layers of fat serve as protection. The adrenal glands lay on top of the kidneys.
Inside the kidneys are a number of pyramid-shaped lobes. Each consists of an outer renal cortex and an inner renal medulla. Nephrons flow between these sections. These are the urine-producing structures of the kidneys.
Blood enters the kidneys through the renal arteries and leaves through the renal veins. The kidneys are relatively small organs but receive 20–25 percent of the heart’s output.
Each kidney excretes urine through a tube called the ureter that leads to the bladder.