Seventh Grade Science Chapter 25

Front 1

Label Excretory System

Back 1

see handout 25-13b

Front 2

What is anthromorphism for?

Back 2

red blood cells
white blood cells

Front 3

What are the three parts of the blood?

Back 3

1. PLASMA
2. WHITE BLOOD CELL/PLATELETS
3. RED BLOOD CELLS

Front 4

Define plasma.

Back 4

Plasma is top layer of blood. It makes up more than half of the blood. It is straw colored.

Front 5

What is the proper name for red blood cells?

Back 5

ERYTHROCYTES

Front 6

What is the main function of red blood cells?

Back 6

To carry oxygen to the brain and other organs AND then to return to lungs to exchange carbon dioxide (waste) for more oxygen. P. 25 - B3

Front 7

Where are the red blood cells formed?

Back 7

in bone marrow

Front 8

What substances makes red blood cells the color red?

Back 8

HEMOGLOBIN

Front 9

What is hemoglobin?

Back 9

Hemoglobin is an IRON containing PIGMENT that makes erythrocytes appear a red color.

Front 10

List characteristics of ERYTHROCYTES (red blood cells.)

Back 10

1. concave disc shaped cell (has dent)
2. NO Nucleus
2. transport oxygen
3. contain hemoglobin

Front 11

What is the main function of red blood cells?

Back 11

To carry oxygen to the brain and other organs AND then to return to lungs to exchange carbon dioxide (waste) for more oxygen. P. 25 - B3

Front 12

Where are the red blood cells formed?

Back 12

in bone marrow

Front 13

What substances makes red blood cells the color red?

Back 13

HEMOGLOBIN

Front 14

What is hemoglobin?

Back 14

Hemoglobin is an IRON containing PIGMENT that makes erythrocytes appear a red color.

Front 15

List characteristics of ERYTHROCYTES (red blood cells.)

Back 15

1. concave disc shaped cell (has dent)
2. NO Nucleus
2. transport oxygen
3. contain hemoglobin

Front 16

Label Excretory System

Back 16

see handout 25-13b

Front 17

What is anthromorphism for?

Back 17

red blood cells
white blood cells

Front 18

What are the three parts of the blood?

Back 18

1. PLASMA
2. WHITE BLOOD CELL/PLATELETS
3. RED BLOOD CELLS

Front 19

Define plasma.

Back 19

Plasma is top layer of blood. It makes up more than half of the blood. It is straw colored.

Front 20

What is the proper name for red blood cells?

Back 20

ERYTHROCYTES

Front 21

What is the main function of red blood cells?

Back 21

To carry oxygen to the brain and other organs AND then to return to lungs to exchange carbon dioxide (waste) for more oxygen. P. 25 - B3

Front 22

Where are the red blood cells formed?

Back 22

in bone marrow

Front 23

What substances makes red blood cells the color red?

Back 23

HEMOGLOBIN

Front 24

What is hemoglobin?

Back 24

Hemoglobin is an IRON containing PIGMENT that makes erythrocytes appear a red color.

Front 25

List characteristics of ERYTHROCYTES (red blood cells.)

Back 25

1. concave disc shaped cell (has dent)
2. NO Nucleus
2. transport oxygen
3. contain hemoglobin

Front 26

Define anemia.

Back 26

Anemia is a condition when a perosn can not carry enough oxygen rich blood to the body either because they breathed in carbon dioxide or they lack iron.

Front 27

What is the proper name for white blood cells?

Back 27

LEUKOCYTES

riddle:
Luke was white - LEUKOCYTES

Front 28

What is the function of white blood cells (Leukocytes)?

Back 28

1. fighting off foreign
substances/disease
2. producing antibodies that fight
disease

Front 29

Define ANTIBODIES.

Back 29

ANTIBODIES are chemicals that attack invading organisms or poisons.

Front 30

Define ANTIGENS.

Back 30

ANTIGENS are molecules that do not belong in the body. They are recognized by special white blood cells called macrophages that attack them.

Front 31

What type of white blood cell is used by the immune system?

Back 31

LYMPHOCYTES - are used by the immune system to fight off pathogens.

Front 32

Define Pathogens.

Back 32

bacteria, viruses, and other organisms that can cause sickness and death

Front 33

NAME THE 2 TYPES OF LYMPHOCYTES of the immune system:

Back 33

T CELLS - job: identify antigens
(killer T cells attack/helper T cells go get B cells)
B CELLS - JOB: Produce plasma which produce more antibodies to destroy pathogen

Front 34

What is the primary function of the excretory system?

Back 34

Remove wastes form the blood and to eliminate the wastes from the body.

Front 35

What is the main organ of the excretory system?

Back 35

kidneys

Front 36

Function of kidney:

Back 36

filters waste from the blood

(reddish brown, bean shaped organs located in lower back)

Front 37

Function of ureters:

Back 37

tubes that carry wastes from kidney to bladder

Front 38

Function of urinary bladder:

Back 38

muscular bag that temporarily stores fluid wastes from the kidneys

Front 39

Function of the urethra:

Back 39

muscular tube that carries wastes from bladder to outside of body

Front 40

What is a NEPHRON?

Back 40

a unit in the kidney that filters the blood; about one million nephrons in each kidney

Front 41

Function of kidney:

Back 41

filters waste from the blood

(reddish brown, bean shaped organs located in lower back)

Front 42

Function of ureters:

Back 42

tubes that carry wastes from kidney to bladder

Front 43

Function of urinary bladder:

Back 43

muscular bag that temporarily stores fluid wastes from the kidneys

Front 44

Function of the urethra:

Back 44

muscular tube that carries wastes from bladder to outside of body

Front 45

What is a NEPHRON?

Back 45

a unit in the kidney that filters the blood; about one million nephrons in each kidney

Front 46

the internal balance an organism must maintain for good health

Back 46

homeostatsis

Front 47

small structures found in the blood (a part of white blood cell) involved in forming blood clots

Back 47

platelets