Exchange Surfaces 4 Key Words

Question 1

Integumentary system

Answer 1

Organ system including skin and appendages, protect body from damage (dehydration, pathogen invasion)

Question 2

Oral side

Answer 2

Gill face closest to mouth

Question 3

Aboral side

Answer 3

Gill face furthest from mouth (closest to external environment)

Question 4

Operculum

Answer 4

Bony plate covering gills

Question 5

Primary lamellae (gill filaments)

Answer 5

Very thin filament found along gill arch. Surface folded into secondary lamellae

Question 6

Ventral aorta

Answer 6

Artery carrying blood from ventricles to arteries supplying gill arches

Question 7

Dorsal aorta

Answer 7

Major artery carries oxygenated blood from gill arches to body organs

Question 8

Buccal cavity

Answer 8

Cavity inside mouth, above gill arches, aka mouth cavity

Question 9

Counter current

Answer 9

mechanism of fluid flow in opposite directions, in fish important for O2 conc gradient maintenance

Question 10

Buccal-opercular pump

Answer 10

Aka respiratory pump. Caused by buccal and opercular cavity volume
changes, keeps oxygenated water flowing over gills