activity 4

  Correct answers will be available on Jun 14 at 8am.

Score for this attempt: 12 out of 16 *

Submitted Jun 13 at 9:55pm

This attempt took 38 minutes.

 

Question 1

1 / 1 pts

What is the overarching "rule" for how gases like oxygen and carbon dioxide flow??

 

(This is a variation of the same rules you know regarding concentration gradients & blood flow!)

  

Gases travel from low to high pressure

 

  

Gases travel from low concentration to high concentration

 

  

Gases travel when pressure is the same

 

  

Gases travel from high to low pressure

 

 

Question 2

0.5 / 0.5 pts

  

C

 

  

B

 

  

A

 

 

Question 3

5 / 5 pts

Please match the number below (1-10) with the correct gas

Step	Gas	Step	Gas
1	[ Select ]      ["oxygen (O2)", "carbon dioxide (CO2)"]	6	[ Select ]      ["carbon dioxide (CO2)", "oxygen (O2)"]
2	[ Select ]      ["carbon dioxide (CO2)", "oxygen (O2)"]	7	carbon dioxide (CO2)
3	[ Select ]      ["oxygen (O2)", "carbon dioxide (CO2)"]	8	[ Select ]      ["oxygen (O2)", "carbon dioxide (CO2)"]
4	[ Select ]      ["oxygen (O2)", "carbon dioxide (CO2)"]	9	[ Select ]      ["carbon dioxide (CO2)", "oxygen (O2)"]
5	[ Select ]      ["oxygen (O2)", "carbon dioxide (CO2)"]	10	[ Select ]      ["oxygen (O2)", "carbon dioxide (CO2)"]

 

Answer 1:

oxygen (O2)

 

Answer 2:

carbon dioxide (CO2)

 

Answer 3:

oxygen (O2)

 

Answer 4:

carbon dioxide (CO2)

 

Answer 5:

oxygen (O2)

 

Answer 6:

carbon dioxide (CO2)

 

Answer 7:

oxygen (O2)

 

Answer 8:

carbon dioxide (CO2)

 

Answer 9:

oxygen (O2)

 

Answer 10:

carbon dioxide (CO2)

 

 

Look at the diagram below. Then, answer the next few questions.

 

PartialQuestion 4

Question 4

3 / 3 pts

Why does Oxygen travel into the blood of pulmonary capillaries?

 

Oxygen travels from the         [ Select ]      ["alveoli", "tissues"]  into the blood of pulmonary capillaries because the pressure of         [ Select ]      ["oxygen (O2)", "carbon dioxide (CO2)"]  is greater in the alveoli than in the capillaries.

Answer 1:

alveoli

 

Answer 2:

oxygen (O2)

 

Answer 3:

greater

 

 

Question 5

3 / 3 pts

Why does carbon dioxide travel into the blood of systemic capillaries?

 

Carbon dioxide travels from the         [ Select ]      ["alveoli", "peripheral tissues"]  into the blood of systemic capillaries because the pressure of         [ Select ]      ["oxygen (O2)", "carbon dioxide (CO2)"]  is greater in the tissues than in the capillaries.

Answer 1:

peripheral tissues

 

Answer 2:

systemic

 

Answer 3:

carbon dioxide (CO2)

 

Answer 4:

greater

 

 

Question 6

0.5 / 0.5 pts

Look at the following graph that demonstrates the relative solubility of various gases in water. Then answer the question.

 

Which gas is most soluble in water at all temperatures?

  

carbon dioxide (CO2)

 

  

nitrogen (N2)

 

  

oxygen (O2)

 

  

Helium (He)

 

 

Question 7

Not yet graded / 3 pts

Look at the same graph from above again. Then, answer all 3 questions briefly.

1. Which gas is more soluble in water: oxygen or carbon dioxide?

2. What problem might that present for gas transport through the blood?

3. What cells and proteins do we have to counteract this problem?

 

Your Answer:

1.Carbon dioxide is more soluble than oxygen.

2. if the CO2 level increase it could affect the oxygen transport in blood. 

3. Hemoglobin found in red blood cell which carry oxygen in blood. Insufficient hemoglobin or RBCs could cause deviation of oxygen level in body system.

 

Quiz Score: 12 out of 16

Previous

ACTIVITY 3

Question 1

4 / 4 pts

When the diaphragm and         [ Select ]      ["The internal intercostal muscles", "The abdominal muscles", "The external intercostal muscles"]  muscles contract, the volume of the lungs         [ Select ]      ["increases", "decreases"]  . As a result, the alveolar pressure         [ Select ]      ["decreases", "increases"]  . Air rushes in because the atmospheric pressure is now         [ Select ]      ["less", "greater"]  than the alveolar pressure.

Answer 1:

The external intercostal muscles

 

Answer 2:

increases

 

Answer 3:

decreases

 

Answer 4:

greater

 

 

UnansweredQuestion 2

Question 2

4 / 4 pts

When the         [ Select ]      ["The diaphragm", "The internal intercostal muscles", "The abdominal muscles"]  and the external intercostal muscles relax, the volume of the lungs         [ Select ]      ["increases", "decreases"]  . This results in a         [ Select ]      ["increase", "decrease"]  in alveolar pressure. Air flows out of the body because the atmospheric pressure is now         [ Select ]      ["less", "more"]  than the alveolar pressure.

Answer 1:

The diaphragm

 

Answer 2:

decreases

 

Answer 3:

increase

 

Answer 4:

less

 

 

activity 2 week 10

 Score for this attempt: 6 out of 6

Submitted Jun 13 at 7:44pm

This attempt took 2 minutes.

 

Question 1

2 / 2 pts

Which TWO of the following choices are the primary inspiratory muscles involved in pulmonary ventilation? These are the ones you use during a normal inspiration.

  

The internal intercostal muscles

 

  

The external intercostal muscles

 

  

The diaphragm

 

  

The abdominal muscles

 

 

Question 2

2 / 2 pts

Which muscles relax during a normal expiration?

  

The external intercostal muscles

 

  

The abdominal muscles

 

  

The diaphragm

 

  

The internal intercostal muscles

 

 

Question 3

2 / 2 pts

The external intercostals and internal intercostals contract, while the diaphragm and abdominal muscles relax during forced expiration.

  

True

 

  

False