Respiratory membrane anatomy and gas diffusion

1.      Oxygen and carbon dioxide move through the respiratory membrane and into and out of cells by the process of

a)      Diffusion

b)     Active transport

c)      Osmosis

d)     Phagocytosis

2.      What is the barrier between which gases are exchanged by alveolar air and blood?

a)      Blood brain barrier

b)     Placenta

c)      Respiratory membrane

d)     Nuclear membrane

e)      Mitochondrial membrane

3.      What is a component of the fluid coating the respiratory membrane that reduces surface tension and prevent each alveolus from collapsing during respiration?

a)      Lymph

b)     CSF

c)      Plasma

d)     Surfactant

e)      Cytosol

f)       Water

4.      What consists of alveolar epithelium, capillary endothelium, and their joined basement membranes?

a)      Alveoli

b)     Bronchi

c)      Cell membrane

d)     Respiratory membrane

e)      Placenta

f)       Meninges 

5.      The thin respiratory membrane consists of what type of tissue

a)      Dense connective

b)     Osseous

c)      Stratified squamous

d)     Simple squamous

e)      Pseudo stratified

f)       Ciliated columnar

g)      Keratinized epithelium

6.      Pulmonary edema __________ the thickness of the pulmonary membrane resulting in __________ gas exchange.

a)      Increases; less

b)     Increases; more

c)      Decreases; less

d)     Decreases; more

7.      The cell in the alveolus that secretes surfactant is called a __________.

a)      Type I pneumocytes

b)     Type II pneumocytes

c)      Macrophages

d)     Surfactantocytes