ch 18 pt 2 anatomy

Question 1

What does leukocytes (white blood cells) do?

Answer 1

Defend against pathogens (infection)

Question 2

Blood pH

Answer 2

7.35-7.45

Question 3

What does water like to do?

Answer 3

Follow proteins

Question 4

How do we get body temp?

Answer 4

Blood absorbs heat from body cells

Question 5

Oxygen-rich blood is

Answer 5

Bright red

Question 6

Oxygen-poor blood is

Answer 6

Dark red

Question 7

Volume of blood

Answer 7

5 liters

Question 8

What is the viscosity?

Answer 8

Blood is 4-5 times thicker than water for resistance to flow

Question 9

Viscosity increases if

Answer 9

Erythrocyte number increases or amount of fluid decreases

Question 10

What is plasma concentration?

Answer 10

Determines the direction of osmosis across capillary walls

Question 11

Whole blood separated is

Answer 11

Erythrocytes (most dense), buffy coat, plasma (least dense)

Question 12

What is in the buffy coat?

Answer 12

Leukocytes and platelets

Question 13

What is hematocrit?

Answer 13

Percentage of volume of all formed elements (45%)

Question 14

Why don’t red blood cells have nucleus?

Answer 14

To carry oxygen

Question 15

Why is plasma an extracellular fluid?

Answer 15

It is outside the cell

Question 16

What is colloid?

Answer 16

Plasma contains dispersed proteins

Question 17

What is colloid osmotic pressure?

Answer 17

Prevents loss of fluid from blood to help maintain blood volume and pressure