Chapter 17 Blood BIO202

Question 1

Functions of Blood (8)

Answer 1

1. Deliver Oxygen from lungs to tissues
2. Deliver nutrients from digestive tract to tissues
3. Transport Carbon Dioxide from tissues to lungs
4. Transport wastes from tissues to kidneys
5. Transport hormones
6. Maintain temperature, pH, and extracellular fluid levels
7. Clotting proteins close wounds
8. Defend against infection

Question 2

Blood pH

Answer 2

pH — 7.35- 7.45

Question 3

Blood Temperature

Answer 3

Temperature — 100.4 º F

Question 4

Blood Volume

Answer 4

• Volume
– Males♂ 5-6 L
– Females♀ 4-5 L

Question 5

Components of Blood

Answer 5

1. Plasma
   Formed elements:
2. Red blood cells
3. White blood cells/platelets

Question 6

Hematocrit

Answer 6

Take a sample of blood and spin it in a centrifuge; this will separate formed elements from plasma

Question 7

Plasma (% in blood)

Answer 7

~55% of blood by volume

Question 8

Buffy coat

Answer 8

Contains white blood cells & platelets <1% of blood volume

Question 9

Red blood cells

Answer 9

Hematocrit
– Males♂ 47% ± 5%
– Females♀ 42% ± 5%

Question 10

Plasma composition

Answer 10

90% water
Plasma proteins
Nitrogenous wastes, nutrients, electrolytes, respiratory gases, and hormones

Question 11

Plasma proteins

Answer 11

1. Albumin
2. Globulins (alpha, beta, gamma)
3. Fibrinogen (clotting factor)