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15.5 The Structure and
Function of the Mammalian
Kidney
Class Bio
Created @Apr 29, 2021 12:31 PM
Date of Exam @May 10, 2021
Exam Questions done?
Reviewed
Teacher Mrs Batchelor
Type Sub-topic
Human kidneys are a pair of reddish-brown organs attached to
the back of the abdominal cavity. They are usually surrounded
by a thick, protective layer of fat and a layer of fibrous
connective tissue.
The kidneys play two important homeostatic roles in the body -
they are involved in excretion and osmoregulation. They filter
nitrogenous waste products out of the blood, especially urea.
15.5 The Structure and Function of the Mammalian Kidney 1
, They also help to maintain the water balance and pH of the
blood, and hence the tissue fluid that surrounds all the
cells.
the anatomy of the kidneys
The kidneys are supplied with blood at arterial pressure by
the renal arteries that branch off from the abdominal aorta.
Blood that has circulated through the kidneys is removed by
the renal vein that drains into the inferior vena cava. About
90-120cm3 of blood passes through the kidneys every minute.
All of the blood in the body passes through the kidneys about
once an hour. The kidneys filter 180dm3 of blood a day,
producing 1-2dm3 of urine. The final volume depends on many
different factors.
The kidneys are made up of millions of small structures called
nephrons that act as filtering units. The sterile liquid
produced by the kidney tubules is called urine. The urine
passes out of the kidneys down tubes called ureters. It is
collected in the bladder, a muscular sac that can store around
400-600cm3 of urine. When the bladder is getting full, the
15.5 The Structure and Function of the Mammalian Kidney 2
15.5 The Structure and
Function of the Mammalian
Kidney
Class Bio
Created @Apr 29, 2021 12:31 PM
Date of Exam @May 10, 2021
Exam Questions done?
Reviewed
Teacher Mrs Batchelor
Type Sub-topic
Human kidneys are a pair of reddish-brown organs attached to
the back of the abdominal cavity. They are usually surrounded
by a thick, protective layer of fat and a layer of fibrous
connective tissue.
The kidneys play two important homeostatic roles in the body -
they are involved in excretion and osmoregulation. They filter
nitrogenous waste products out of the blood, especially urea.
15.5 The Structure and Function of the Mammalian Kidney 1
, They also help to maintain the water balance and pH of the
blood, and hence the tissue fluid that surrounds all the
cells.
the anatomy of the kidneys
The kidneys are supplied with blood at arterial pressure by
the renal arteries that branch off from the abdominal aorta.
Blood that has circulated through the kidneys is removed by
the renal vein that drains into the inferior vena cava. About
90-120cm3 of blood passes through the kidneys every minute.
All of the blood in the body passes through the kidneys about
once an hour. The kidneys filter 180dm3 of blood a day,
producing 1-2dm3 of urine. The final volume depends on many
different factors.
The kidneys are made up of millions of small structures called
nephrons that act as filtering units. The sterile liquid
produced by the kidney tubules is called urine. The urine
passes out of the kidneys down tubes called ureters. It is
collected in the bladder, a muscular sac that can store around
400-600cm3 of urine. When the bladder is getting full, the
15.5 The Structure and Function of the Mammalian Kidney 2
