Transcript earthworm_dissection_review

Earthworm Dissection
Review
http://www.riverside.sd43.bc.ca/art/long%5Fbi%5F11/oligochaeta/
This flap of tissue that
overhangs the mouth
opening in an
earthworm is called
the _______________
prostomium

The bristles located on each
segment along the ventral surface of
your earthworm are called _________
setae
Which end is the
posterior end
of this worm?
A
Image from: http://www.nysite.com/nature/fauna/page/earthworm.jpg
A
B
B-end farthest
from clitellum
B
The opening at end B is the __________
anus
Image from: http://biog-101-104.bio.cornell.edu/BioG101_104/tutorials/animals/earthworm.html
These small white sacs (#1) were seen
along side & in front of larger sacs.
Seminal receptacles
They are called ________________
Their function is to
_____________________________
store sperm received from other worms
Image from: http://biog-101-104.bio.cornell.edu/BioG101_104/tutorials/animals/earthworm.html
The holes labeled #4 are the
male genital pores
_____________________.
They connect inside to the sacs called
_______________
seminal vesicles that store sperm made
by this worm.
The ______________
integumentary system deals
with what’s on the outside
surface of the animal.
The _________
stores food in the
crop
earthworm’s digestive system.
Tell which body part is involved in each function
in an Earthworm:
Provide traction __________________
setae
Tissue flap that covers mouth _____________
prostomium
Connects pharynx and crop ___________
esophagus
Infolding for more surface
typhlosole
area inside intestine ________________
intestine
Where nutrients are absorbed _______________
skin
Where gases are exchanged ___________
Act as the brain ______________
Cerebral ganglia
A
Structure A at the anterior end of the
digestive system is the ____________.
pharynx
It is part of the ___________
system.
digestive
A
Which is the
anterior end of
this worm?
A
B
A- end closest
to clitellum
B
Image from: http://www.nysite.com/nature/fauna/page/earthworm.jpg
Tell which body part is involved in
each function in an Earthworm:
aortic arches
Pump blood __________________
Store sperm from
Seminal receptacles
other worms ____________________
Store food _________________
crop
Make mucous
clitellum
for reproduction _________________
Grind food _______________
gizzard
Store sperm from this worm
Seminal vesicles
to give away________________________
Image from: http://biog-101-104.bio.cornell.edu/BioG101_104/tutorials/animals/earthworm.html
Structure #1 is called the ______________
clitellum
make mucous
Its function is to _______________________
reproductive system.
It belongs to the ___________
Image from: http://biog-101-104.bio.cornell.edu/BioG101_104/tutorials/animals/earthworm.html
This white line (#2) that runs
along under the digestive system
Ventral nerve cord
is the _____________________
Image from: http://biog-101-104.bio.cornell.edu/BioG101_104/tutorials/animals/earthworm.html
This white line (#2) belongs to
the________________
nervous
system.
http://www.flushing.k12.mi.us/srhigh/tippettl/biology/lum/cuticle.html
The arrow is pointing at the
____________________
cuticle
Protection;
Give its function _________________
prevent drying out
http://www.flushing.k12.mi.us/srhigh/tippettl/biology/lum/vessel.html

The arrow is pointing at the
____________________
SEMINAL VESICLES
Name the body system _________________
REPRODUCTIVE
http://www.flushing.k12.mi.us/srhigh/tippettl/biology/lum/vessel.html

The arrow is pointing at the
CROP
____________________
Store food waiting
Give its function _________________
to be digested

http://www.flushing.k12.mi.us/srhigh/tippettl/biology/lum/vessel.html
The arrow is pointing at the
____________________
GIZZARD
Give its function _________________
GRIND FOOD
http://www.flushing.k12.mi.us/srhigh/tippettl/biology/lum/vessel.html

The arrow is pointing at the
____________________
PHARYNX
Push food down into
Give its function _________________
digestive system
http://www.flushing.k12.mi.us/srhigh/tippettl/biology/lum/vessel.html
The arrow is pointing at the
____________________
intestine
Absorb nutrients
Give its function _________________
http://www.flushing.k12.mi.us/srhigh/tippettl/biology/lum/vessel.html

The dark line the arrow is pointing at is the
____________________
Dorsal blood vessel
circulatory
Give its body system_________________

http://www.flushing.k12.mi.us/srhigh/tippettl/biology/lum/gizzard.html
The arrows are pointing at the
____________________
Aortic arches
Give its function _________________
Pump blood
A
Structure A which is an infolding that
hangs down inside the intestine to
increase surface area is the
typhlosole
___________________
Name a part of the nervous
system in an earthworm.
Cerebral ganglia OR
ventral nerve cord
The typhlosole is part of the
_____________
system.
digestive
Image from: http://www.nysite.com/nature/fauna/page/earthworm.jpg
A
Structure A is called the
______________
clitellum
These structures
which arch over
the top of the
esophagus are the
_______________
aortic arches
The function of these structures is to
Pump blood
__________________________
circulatory system.
They belong to the ___________
Tell which body system the part belongs
to in an Earthworm:
Nephridia
__________________
excretory
Seminal vesicles _______________
Male reproductive
Crop
_________________
digestive
reproductive
Clitellum _________________
Circulatory
Aortic arches _______________
Nervous
Cerebral ganglia ______________
This dark line that runs along the top
of the digestive system is the
Dorsal blood vessel
___________________

crop
A= _____________
gizzard
B = _____________
A B

Hint:
A is squishy
B is hard
A

Structure A =
intestine
__________
absorb nutrients
It’s function is to ____________________
dorsal
The ___________surface
is facing you
in this view of the earthworm.
dorsal
ventral
How can you tell?
Can see clitellum on this side, it doesn’t go
all the way around on ventral surface
gizzard
The function of the ______________
is to grind up the food.
In an earthworm the function of the
_____________
is to excrete nitrogen
nephridia
waste and regulate the balance of
water and ions.
The ____________
esophagus
connects
the pharynx with the crop.
receptacles store sperm
Seminal ____________
collected from other worms.
Tell which body part is involved in each function
in an Earthworm:
intestine
Absorb nutrients __________________
Opening for sperm from this worm to exit
Male genital pore
when it trades ____________________
nephridia
Excrete nitrogen waste _______________
Protective coating _________________
cuticle
pharynx
Pull food into digestive system__________
ovary
Produce eggs____________
testis
Produce sperm ______________
Each of these blue
dividers that
separate
the segments
inside into
compartments is
a ____________
Septum
(pl. septa)
These openings are the
Male genital pores
____________________
sperm
urea

They are the exit openings
for ______________
sperm

feces
Image from: http://biodidac.bio.uottawa.ca/

These 6 large white sacs are called
__________________.
seminal vesicles
Their job is to
Store sperm to give away
_________________________________