Lung Histology - Lots of practice pictures

Question 1

Type I alvolar tissue refers to:

Type II refers to:

Answer 1

Squamous tissue that lines the airways

Cells that secrete Surfactant

Question 2

To get O2 from the lungs to go into the RBC, how many plasma membranes must be crosed?

Answer 2

5!

2 from the Type 1 cell

2 From the Endothelial cell

1 from the RBC

Question 3

How do you distinguish between Bronchi, Bronchiole and respiratory bronchiole?

Answer 3

Bronchi and Tracheal Tissue:

• Ciliated Epithelial Cells
• Goblet Cells
• Cartillage
• Glands in submucosa

Bronchioles:

• Smooth muscle
• Ciliated and goblet cells
• NO CARTILLAGE
• IF teriminal (or respiratory) then look for Club Cells (See picture AKA Clara cell)

Question 4

What are each of the following Letters in this cross section of a trachea?

Answer 4

A. Chondrocyte

B. Cilia

C. Lamina Propria (small blood vessels and leukocytes

D. perichondrium

E. Capillary

F. Nerve

Question 5

Name the following labels.

Answer 5

This is a Bronchiole: NO CARTILAGE (unlike bronchus)

A. Alveolar Septum

B. Smooth Muscle

C. Epithelial Layer (Ciliated cells and Goblet cells when close to the bronchus)

D. Arteriole (runs with bronchioles)

Question 6

Name these labels:

Answer 6

Terminal Bronchiole

A. Club Cells (produce surface active material)

B. Smooth Muscle

C. RBC in capillary

D. Smooth muscle of Arteriole

Question 7

Name these Labels:

Answer 7

Small Bronchus

A. Alveolar Septum

B. Cartillage

C. Epithelium (ciliated and goblet)

D. Smooth muscle

Question 8

Name these Labels:

Answer 8

A. Lamina Propria

B. Epithelial Layer

C. Mucus

D. Smooth Muscle

E. Cartillage

F. Air pocket in alveolus

Question 9

Name these Labels:

Answer 9

A. Epithelial Layer

B. Cartillage (chondrocyte in lacunae)

C. Capillaries

Question 10

Name these labels:

Answer 10

Bronchiole closer to bronchi (more cilliated cells and goblet cells)

A. Smooth Muscle

B. Alveolar Septum

C. Epithelial layer

D. Smooth Muscle from Arteriole cut obliquely

Question 11

Name these Labels:

Answer 11

A and D. Air

C. RBC

Double headed arrows: Pores (allow for equilibration of pressure)

Question 12

What Layers make up the T?

Whats the big black thing in the bottom T?

Answer 12

T. Type 1 pneumocyte, basal lamina, endothelial cell

Big black thing: Nucleus

Question 13

Name the order that CO2 would pass through these cells1.

Answer 13

1. RBC membrane
2. Endothelial Cell Membrane
3. Basal Lamina
4. Type I Pneumocyte
5. Surfactant

Question 14

Name this cell

Answer 14

Type II pneumocyte:

Multilamellar layers

Question 15

What role does P play?

Answer 15

It is an alveolar/pulmonary macrophage. They eat nasties in the lungs.