"Discharge of Waste from the Human Body" PPT Courseware 3

Description

"Discharge of Waste from the Human Body" PPT Courseware 3

1. Excretion

Concept: The process of expelling waste products such as carbon dioxide, urea and excess water from the body when substances in the body are decomposed.

way:

1) Skin: excretes water, inorganic salts, and urea in the form of sweat

2) Respiratory system: excrete carbon dioxide and water in the form of gas

3) Urinary system: excretes water, inorganic salts, and urea in the form of urine

2. Excretion: the process in which feces formed from the residue after digestion of food is excreted from the body.

1. Function of urinary system

Kidneys (form urine)

Ureter (carries urine)

Bladder (temporarily stores urine)

urethra (discharge of urine)

tubular reabsorption

Substances useful to the human body, including most water, all glucose and some inorganic salts

The difference between blood, plasma, raw urine and urine

meaning of urination

Remove waste from the body

Regulate the balance of water and inorganic salts in the body

Maintain normal physiological functions of tissue cells

practice

1. The following table shows the components of final urine, plasma, and original urine (grams/100 ml). Please answer:

1. A is _____, B is _____, C is _____

A Original urine Final urine Plasma

B final urine original urine plasma

C plasma original urine final urine

2. The following table shows the components of final urine, plasma, and original urine (grams/100 ml). Please answer:

2. A’s protein is 8, while B’s is 0. This is because______________

3. The following table shows the components of final urine, plasma, and original urine (grams/100 ml). Please answer:

3. B’s glucose is 0.1, while C’s glucose is 0. This is because_____________

4. The following table shows the components of final urine, plasma, and original urine (grams/100 ml). Please answer:

4. B’s urea is 0.03, while C’s urea is 2. This is because_____________

power enhanced

The picture below is the schematic diagram of an artificial kidney dialysis machine. Which of the following structures do you think the dialysis membrane in the picture corresponds to ( )

A. Glomerulus B. Renal tubule C. Renal artery D. Renal vein

The picture on the right shows the changes in the percentage content of several components in their respective liquids during the process of blood flowing through the kidneys to form urine. The letters A to E represent related structures (A is known to be the glomerulus). Answer based on the picture:

(1) Which of the substances represented by curves A and B are glucose and urea respectively? A______, B_______.

(2) The liquid in B________ is called___________. (3) The reason why the concentration of A in C_________ increases is ____________________.

As shown in the picture on the right, if c is a capillary and A and B are the blood vessels connected to it, fill in the blanks according to the picture:

(1) If C is the capillary blood vessel in the small intestine, the main component of the blood in B compared to the blood in A is __________.

(2) If C is the capillary blood vessel around the lungs, then the blood flowing at B contains more __________ and belongs to __________ blood.

(3) If C is a glomerulus, then the blood flowing at B is _____ blood, and the components in B that have not changed compared with those at A are _______ and ____________.

(4) If C is the capillary around the tissue cells, the blood flowing at B is __________ blood.

The picture below shows what happens when blood flows through capillaries in a certain part of the body. Analysis and answer:

1. If ② represents the glomerulus, then the name of ① is ______,

③The name is ______, and it bleeds ______. The ______ action of blood occurs at ②.

2. If ② represents the capillary network of the lungs, then ① is ______, which contains ______ blood.

3. If ② represents the capillary network around the renal tubule, then the name of ① is ______, and the internal flow of blood is ______.

4. If ② represents the capillary network within the villi of the small intestine, then the characteristics of the blood component in ③ are _____________.

Summary: After blood flows through the lungs, it becomes ____________ blood; after blood flows through the small intestine, it becomes ____________ blood; after blood flows through the kidneys, it becomes ___________ blood.

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Update Time: 2024-11-21

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

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