Histology

Question 1

What type of mucosa is this?

Answer 1

Respiratory mucosa

Question 2

Name A

Answer 2

A: Long, non-motile cilia of olfactory neurons

Question 3

Name B

Answer 3

B: Sustentacular (support) cells

Question 4

Name C

Answer 4

C: bipolar olfactory neuron

Question 5

Name D

Answer 5

D: Basal cell

Question 6

Name E

Answer 6

Bowmans glands

Question 7

What type of secretion is produced by E?

Answer 7

seromucous

Question 8

Name F

Answer 8

F; filum olfactorum (axons of olfactory nerves)

Question 9

Name G

Answer 9

G: pseudostratified columnar epithelium

Question 10

Name H

Answer 10

H: lamina propria

Question 11

Name I

Answer 11

I: cartilage (neonate ethmoid)

Question 12

Name A

Answer 12

A: oesophagus

Question 13

Name B

Answer 13

B: thyroid gland

Question 14

Name C

Answer 14

C: trachealis muscle

Question 15

Is C the dorsal or ventral aspect? Why?

Answer 15

Dorsal: trachealis m, oesophagus

Question 16

Name D

Answer 16

D: incomplete cartilaginous tracheal rings

Question 17

Which species is this? Why?

Answer 17

Carnivore: trachealis m. external to cartilage

Question 18

Name A

Answer 18

A: ciliated pseudostratified columnar respiratory epithelium

Question 19

Name B

Answer 19

B: lamina propria

Question 20

Name C

Answer 20

C: tracheal gland

Question 21

Name D

Answer 21

D: goblet cell (PAS stain)

Question 22

Name A

Answer 22

A: ciliated pseudostratified columnar respiratory epithelium

Question 23

Name B, H

Answer 23

B, H: Incomplete cartilages (of bronchi)

Question 24

Name C

Answer 24

C: Bronchial (smooth) muscle

Question 25

Name D

Answer 25

D: Goblet cell

Question 26

Name E

Answer 26

E: Bronchial artery (smooth muscle)

Question 27

Name F

Answer 27

F: Bronchial gland

Question 28

Name G

Answer 28

G: alveolus

Question 29

Name A

Answer 29

A: conducting bronchiole (no cartliage, complete walls)

Question 30

Name B

Answer 30

B: Bronchiolar artery

Question 31

Name C

Answer 31

C: mucous: NB NO GOBLET CELLS IN BRONCHIOLES

Question 32

Name D

Answer 32

D: Simple columnar epithelium, mostly unciliated, with CLARA cells (not easily visible)

Question 33

Name E

Answer 33

E: bronchiolar smooth muscle

Question 34

Name F

Answer 34

F: gland (NB significantly less glands than bronchi)

Question 35

Name A

Answer 35

A: bronchiole (no cartilage)

Question 36

Name B

Answer 36

B: alveolar sac

Question 37

Name C

Answer 37

C: holes in bronchiole wall leading to alveoli

Question 38

Name D

Answer 38

D: terminal bronchiole (leading to respiratory bronchiole)

Question 39

Name E

Answer 39

E: respiratory bronchiole (incomplete walls)

Question 40

Name A

Answer 40

A: Type 1 pneumocyte (nucleus)

Question 41

Name and describe B

Answer 41

B: Blood-gas barrier: type 1 pneumocyte + basement membrane + endothelial cell of capillary

Question 42

Name and describe C

Answer 42

C: Type 2 pneumocyte (surfactant producing)