INTEGBI 175LF Lecture Notes - Lecture 25: Viperidae, Midbrain Tectum, Nostril
1 May 2018
School
Department
Course
Professor
-Cmurhna :low -frit surfaces
;
tunnels /climbing
post .body is anchored
,ant stretched forward
,rpt
-rectilinear :
by ly .bodied
,
walk on ribs lmtthn
,
boas
,pythons)
.body in straight line
.lift ventral sales
,
ndj .forward
,pulled dmtbmtwwd
.hilt .
w/ abstmk causes body to move forward
tide
winding :low -fnih shifting surfaces (
sand v. pad
set . of body At .
lifted
,
moved forward
,set down
.2section ,placed in static fit →fore vertical
.talk prop .to length
.
Chemoreception :
-Used in foraging +communication
-
pheromones are important
;
Hearing:not well .developed (no #middle ears ),
detect sixty airborne sound
Vision :
-not dlv.in foss
-remnant features
:
.
no oil droplet in cells
.
no sdaad ossicks
;
no nudes in ciliavary muscles
fobs by moving lens forward .ibkwavd rather than aawmodntim (shape D)
.spectacle thus conlvib
. .
-to Focus (like lists
.spectacle has blood vessels in it
.can't modulate ant of light w/ melanin lih lit can
.Optic tectum :where non .mamm process visual images (liz .
)
.thalamus :where snakes proud
.IR deletion :
-evolved multiple times (
Boidae
,Python
idae
,
Viperidae
)
labial pit at ↳single pit btw get nostril
-thin
,highly innlwakd membrane →
precise detection of distt direction
-wd head when excited -thermal diff of 0.003 °C
