"Discharge of Waste from the Human Body" PPT Courseware 6

Description

"Discharge of Waste from the Human Body" PPT Courseware 6

1. The way waste is discharged from the human body

Definition: The process of excreting metabolites from the body

Organs: Kidneys, lungs and skin

Pathway: Respiration: carbon dioxide and a small amount of water

Skin: part water, inorganic salts and a small amount of urea

Urinary: Most water, inorganic salts and urea

Definition: The process of removing undigested food residues and other substances from the body

elimination

Organs: Large intestine and anus

Route: formed in the large intestine and excreted in the form of feces from the anus

3. Formation and discharge of urine

Kidneys are the organs that make urine

1. The kidney is the organ that forms urine. Each kidney consists of approximately ( ) structural and functional units, called ( ).

2. Each nephron is composed of ( ), ( ) and ( ).

3. ( ) is a blood vessel glomerulus. The renal glomerulus is covered by the renal capsule and is connected to ( ) below.

feedback exercise

1. The blood vessels entering and exiting the glomerulus are called ( )

A. Efferent arteriole, afferent venule B. Efferent venule, afferent arteriole

C. Efferent arteriole, afferent arteriole D. Efferent venule, afferent venule

2. The basic unit of kidney structure and function is ( )

A. Renal capsule B. Renal tubule C. Glomerulus D. Nephron

3. Among the following substances, which one can be completely reabsorbed by the renal tubules ( )

A.Water B.Inorganic salts C.Glucose D.Urea

4. When blood cells and proteins appear in the urine of patients with acute nephritis, the disease occurs in ( )

A. Glomerulus B. Renal tubule C. Renal capsule D. Collecting duct

5. The formation process of urine can be summarized as the _____ function and _____ function of the kidney.

Practice it

1. The formation of urine is mainly related to ( ). The glomerulus and glomerular cyst wall play the role of ( ). When blood flows through the glomerulus and glomerular cyst wall, in addition to blood cells and macromolecular proteins, ( ) in the plasma ), ( ) ( ) and ( ) and other substances are filtered through the glomerulus and renal capsule wall into the renal capsule to form ( ). When the original urine flows through the renal tubule, most of the water and some inorganic salts are absorbed by the renal tubule. After being newly absorbed, the remaining ( ), ( ), ( ), etc. become urine.

2. The urine formed in the kidneys flows into ( ) through ( ) and is temporarily stored in ( ). During urination, urine is excreted from the body through ( ).

ANALYSE information

The plasma in the renal artery, the fluid in the renal capsule and the urine of a healthy person were analyzed and compared, and the following data were obtained. Please analyze this data.

discuss

1. Compare what has happened to the composition of urine and plasma? What substances do you think are mainly excreted during urination?

2. What do the changes in liquid components in plasma and renal capsule indicate about the functions of glomerulus and renal capsule wall?

3. Glucose appears in the renal capsule but not in the urine. What does this mean about the function of the renal tubules?

test you

The following table is a comparison table of the components of plasma, raw urine, and urine. Please answer the following questions: (g/L)

(1) Determine the names of the three liquids A, B, and C: A______, B______, C______.

(2) The protein of A is 70-80, while the protein of B is trace. This is due to ____________.

(3) B’s glucose is 1, while C’s glucose is 0. This is due to ____________________.

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Update Time: 2024-11-19

This template belongs to biology courseware People's Education Press seventh grade biology book volume 2 industry PPT template

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