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Please help on respiratory system!

1) All exhalation is caused by:
A- contraction of the the diaphragm
B- contraction of abdominal muscles
C- elastic recoil of the lungs
D- contraction of internal intercostals

2) Which is a greater driving force for breathing: O2 or CO2?

3) What muscles are primarily responsible for quiet (normal, relaxed) inspiration?
A- diaphragm
B- internal intercostals
C- scalenes
D- abdominal muscles

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Nestor Rutherford
Nestor RutherfordLv2
28 Sep 2019
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Related questions

QUESTION 1

Cellular respiration uses________to produce energy and releases ________as a waste product.

O2; CO2

CO2; O2

ATP; G3P

G3P; ATP

5 points

QUESTION 2

Select all of the following that compose the conducting pathways in the respiratory system.

nasal cavity

Pharynx

Larynx

Trachea

Bronchi

Alveoli

5 points

QUESTION 3

Match each structure with its' function.

- A. B. C. D. E. F. G.

Nasal Cavity
- A. B. C. D. E. F. G.

Alveoli
- A. B. C. D. E. F. G.

Larynx
- A. B. C. D. E. F. G.

Trachea
- A. B. C. D. E. F. G.

Bronchi
- A. B. C. D. E. F. G.

Bronchioles
- A. B. C. D. E. F. G.

Pharynx
A.

Throat
B.

Very small branches of bronchi within the lungs.
C.

Larger branching passages for air within the lungs.
D.

Location of gas exchange with the blood.
E.

Carries air from larynx and branches into bronchi.
F.

Location of the voice box, earliest location where only air passes.
G.

Carry air into the pharynx, earliest location of cleaning, warming, and humidifying the air.

8 points

QUESTION 4

Mammals are able to inhale because increasing the volume of the thoracic cavity will decrease the pressure within the lungs. This is called_____

pump-controlled breathing

forced inflation breathing

negative-pressure breathing

stretch breathing

6 points

QUESTION 5

Indentify which muscles are primarily responsible for quiet (normal, relaxed) inspiration?

diaphragm

internal intercostals

sclaenes

abdominal muscles

12. Passive expiration is preceded by the:

a. recoil of the lungs

b. contraction of the internal intercostals muscles.

c. contraction of the diaphragm.

d. increase in atmospheric pressure.

e. increase in CO2 in the blood

14. Type I alveolar cells:

a. secrete surfactant.

b. are squamous epithelial cells.

c. are macrophages.

d. function mainly in the diffusion of gases.

e. Both B and D.

15. Which of the following structures is NOT a part of the respiratory system?

a. external nares

b. uvula

c. epiglottis

d. choanae

e. mouth

19. Which of the following is NOT considered a function of the respiratory system?

a. Regulation of acid-base balance

b. Production of sound

c. Filtering inspired air

d. Transport of oxygen and carbon dioxide to tissue cells

e. Intake of oxygen and elimination of carbon dioxide

20. Breathing is more difficult in higher altitudes because the

a. air weighs less

b. partial pressure of atmospheric oxygen is lower

c. partial pressure of atmospheric carbon dioxide is higher

d. partial pressure of atmospheric nitrogen is lower

e. partial pressure of atmospheric oxygen is higher

27. During expiration a decrease in thoracic cavity size causes a (an) in pressure thus causing the lungs to recoil resulting in a (an) in pressure respectively.

a. decrease intraplueral; decrease intrapulmonary

b. decrease intraplueral; increase intrapulmonary

c. increase intraplueral; decrease intrapulmonary

d. decrease intrapulmonary; increase intraplueral

e. increase intrapleural ; increase intrapulmonary

66. During _____________ ______________, oxygen enters the blood and carbon dioxide leaves the blood, and enters the alveoli.

68. Hemoglobin buffers the pH of the cytosol of RBC by combining with ______ions

The minimum time it takes a normal person to go from residual volume (RV) to total lung capacity (TLC) is less than the minimum amount of time to go from TLC to RV. The most probable explanation for this effect is: A. the chest wall tends to spring outward when the respiratory system is at RV. B. the chest wall is less compliant at RV. C. inspiratory muscles are stronger than expiratory muscles. D. the lungs have less recoil at TLC. E. the airways tend to collapse during forced expiration. (can you please explain why this is the answer)

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