Prac Test 2

1.

1 point

Excess fluid from circulation is returned by the lymphatic system

True

False

2.

1 point

Which of the following are factors that promote tissue edema (swelling)

Increased capillary blood pressure

decreased plasma colloid pressure

increased capillary permeability

blocked lymphatic vessels

all of the above

3.

1 point

Which of the following causes elephantiasis?

decreased plasma colloid pressure

increased capillary blood pressure

blocked lymphatic vessels

increased capillary permeability

4.

1 point

How many chambers are in most fishes hearts?

3

4

1

2

5.

1 point

How many circuits are there in an amphibian circulatory system?

4

1

3

2

6.

1 point

How many chambers are in a reptile heart (excluding birds)

1

4

3

2

7.

1 point

How many chambers are in mammalian and avian hearts

2

1

4

3

8.

1 point

Humans have positive pressure breathing

True

False

9.

1 point

Adult Bullfrogs have positive pressure breathing

True

False

10.

1 point

Pressure and volume are inversely related

True

False

11.

1 point

As thoracic cavity expands during inspiration (inhaling), pressure increases

True

False

12.

1 point

Why do some premature babies lungs collapse after birth?

they lack the enzyme surfactant

they aren't properly birthed

they have too much surfactant

they have yet to develop a diaphragm

13.

1 point

What is the average composition of the atmosphere?

N2 : 79% O2: 21% CO2 : .03% H20: 15%

O2: 100%

N2 : 79% O2: 21% CO2 : .03% H20: .5%

N2 : 21% O2: 79% CO2 : .03% H20: .5%

14.

1 point

What is the partial pressure of Oxygen in the atmosphere?

160 mm Hg

80 mm Hg

140 mm Hg

500 mm Hg

15.

1 point

Henry's Law:

Concentration (gas) = solubility * Pgas

True

False

16.

1 point

The medulla oblongata maintains the Partial pressure of O2 and CO2 in the blood

True

False

17.

1 point

How many molecules of O2 can one hemoglobin bind?

8

6

4

2

18.

1 point

What is the carrying capacity of oxygen in blood?

Blood contains about 15 grams of Hb per 100 ml of blood
1.34 ml of O2 can bind with each gram of Hb

60 ml of O2 / 100 ml of blood

40 ml of O2 / 100 ml of blood

10 ml of O2 / 100 ml of blood

20 ml of O2 / 100 ml of blood

19.

1 point

Anemia is a decrease in the concentration of Hb

True

False

20.

1 point

Polycythemia is a decrease in the concentration of Hb

True

False

21.

1 point

%Saturation = (O2 content/ O2 Capacity) * 100

True

False

22.

0 points

KNOW THE O2- Hb DISSOCIATION CURVE LOOK OVER LECTURE 11 IT IS AVAILABLE ON BLACKBOARD. THIS IS GOING TO BE AN EXTREMELY IMPORTANT ASPECT OF THIS TEST. PLEASE LOOK IT OVER. IT IS CRITICAL THAT YOU UNDERSTAND THIS CURVE. ASK DR. HEDRICK, YOUR TA'S, OR YOUR SI QUESTIONS ABOUT IT IF YOU ARE CONFUSED. the answer to this question is true

True

False

23.

0 points

The binding of 1 O2 molecule to a Hb decreases the probability of that Hb binding a second oxygen molecule

True

False

24.

0 points

the P50 is: the partial pressure at which the Hb is 50% saturated with 02

True

False

25.

0 points

What is the volume of O2 delivered:

Heat is beating at 70 beats/min
50 ml of blood is moved per beat
the Arterio O2 concentartion is 20 ml of O2 / 100 ml of blood
the Venus O2 concentration is 15 ml of O2 / 100 ml of blood

200 ml O2/ min

80 ml O2/ min

300 ml O2/ min

175 ml O2/ min

26.

0 points

Ficks principle:

Volume of Oxygen delivered = Cardiac Output * (arterior-venous O2 difference)

True

False

27.

0 points

An increase in temperature yields a decrease in the volume of blood delivered to the tissue

True

False

28.

0 points

A decrease in temperature yields a decrease in the volume of oxygen delivered to the tissue

True

False

29.

0 points

An increase in the concentration of CO2 in the blood leads to an increase in the volume of oxygen delivered to the tissue

True

False

30.

0 points

Which of the following are factors that decrease hemoglobins affinity for oxygen?

increased temperature

increased partial pressure of CO2 in the blood

decrease in pH

all of the above

31.

0 points

Which of the following increases hemoglobins affinity for oxygen?

decrease in the concentration of H+

decrease in pH of the blood

increased partial pressure of CO2

decreased temperature

32.

0 points

Why does carbon monoxide poison you?

because hemoglobin has a higher affinity for CO than it does for O2

because it causes RBC to rupture

because it degrades hemoglobin

33.

0 points

How is CO2 carried away from tissues?

Dissolved in the blood

bound to Hb

in the form of bicarbonate ion

all of the above

34.

0 points

Which of the following ways of CO2 transportation is used most frequently?

Bicarbonate Ion

dissolved CO2 in the blood

binding to Hb

35.

0 points

What is the intermediate molecule create in the formation of bicarbonate ions?

Carbonic Acid

Sodium Bicarbonate

Catabolic Acid

Carbon Monoxide

36.

0 points

The enzyme Carbonic Anhydrase slows down the formation of Bicaronate ions from CO2

True

False

37.

0 points

Hyperventilation causes a decrease in pH

True

False

38.

0 points

Hypo-ventilation causes a decrease in pH

True

False

39.

0 points

Water moves (through osmosis) to an area of high solute concentration to an area of low solute concentration

True

False

40.

0 points

Hypersosmotic means higher solute concentration and lower free H2O concentration

True

False

41.

0 points

A cell will swell in a hypertonic solution

True

False

42.

0 points

Facillitated diffusion has a transport maximum because all of the carriers can become saturated with solute

True

False

43.

0 points

Co-transport is ions and molecules moving in the same direction

True

False

44.

0 points

Dehydration is not a problem for terrestrial animals

True

False