turtles - chap 16

turtle respiration

no intercostal muscles - no intercostal breathing

ribs fused to shell, gut-lung attachment

gut pushes up on inhale to expand lungs, gut pushes down on exhale to compress lungs

underwater respiration

pharyngeal: throat, vascular fringes

cloacal: villi lined cloacal chambers

circulation

system > pulmonary

2 atria

1 incomplete ventricle

right to left shunting

bypasses lungs for diving and basking

left to right shunting

gives extra oxygen to the heart for exercising

ESD type Ia

hot chicks and cool dudes

ESD type II

intermediate temps male (middle)

extreme temps female

aquatic shell

flat, streamlined

terrestrial shell

domed

river shell versus lake

more streamlined to fight current

Softshell/pig-nosed/leatherback

skin, NOT scutes

tortoises

elephantine feet

freshwater turtles

webbed feet

sea turtles

flippers