Transcript Internal Anatomy 5th 2013

A review of Fish Movement
Remember
what each of the
fish fins or fin pairs
does?
Caudal (tail) fin-- provides thrust, and
control the fish’s direction.
Pectoral fins-- act mostly as rudders and
hydroplanes to control yaw and pitch.
Also act as brakes.
Pelvic fins-- mostly controls pitch. Also
act as brakes.
Dorsal & anal fins-- control roll.
A review of
Trout External Anatomy
Trout External Anatomy
AHHHHH, more review!
Let’s continue
INSIDE
the trout
Internal Anatomy
Remember: we learn
 What
the part is called (Name)
 Where
 What
the part is (Location)
the part does (Function)
Some internal parts of a fish are:








Stomach
Esophagus
Heart
Liver
Intestines
Kidney
Swim ( Air) bladder
Pyloric caeca






(pn: Pie Low Rick
See Kah)
Blood Vessels (veins and arteries)
Brain
‘Ears’
Muscles**
Skeleton**
Remember: The skeleton is really
part of the internal anatomy.
Muscles are too!
Trout Internal Anatomy
Where is the:
 Kidney
 Intestine
 Spleen
 Blood
vessels
Where is the
 Heart
 Liver
 Pyloric
caeca
 Stomach/ Intestine
The fish heart has 2-chambers.
What is this called?
 Air
Bladder or Swim Bladder
Fish’s brain location
Brain
Trout brain (model)
Do fish have ‘ears’?
If they do, where are they?
If they don’t, how do fish hear?
Fish’s Inner Ear
How the otolith works
X-ray view of a fish’s “otolith”
(‘ear stone’).
REVIEW!