Animal x-rays[picture] =Radiographies d'animaux.

              Roylco
► EDUCATION
SUPPLY
ACTIVITY
No.5910
Animal X-Rays
Learn the anatomy of animals!
CSU Fresno
1   Curr
A-V
Madden Library
Curriculum
f  Canada:
30 Northland Road, Waterloo, Ontario, N2V 1V1
USA:
3251 Abbeville Hwy. Anderson, SC 29624
RC
1 St.
78
A55
•
Vm
Ukf\^        I %M
2004
gr.2-6
Real animal x-rays printed on durable transparent plastic are
great for years of use on light tables, overhead projectors and
white surfaces. Study the interior structure of several mammals,
reptiles, fish, amphibians and birds. Explore the process of
creating x-rays, while learning interesting features of these 13
aminals!
Invented over 100 years ago, the x-ray is now an essential
part of the modern world. An x-ray is invisible, highly penetrating
electromagnetic radiation of much shorter wave leangth than
visible light. An x-ray is produced when electrons collide with
each other and return to their ground state, giving up (in the
form of x-rays) the energy they previously held. An x-ray reveals
what is inside an object.
In order to view and assess an x-ray, radiographs are made.
A radiograph is simply a photograph of an x-ray. When an x-ray
passes through an object it provides a visual image of its interior
structure after it strikes a photographic plate. The darkness of
the shadows produced on a radiograph depends on the opacity
of different parts of the body or object.
Common Marmoset
This small tree-dwelling mammal is found
in the tropical rainforests of South America.
Marmosets travel in stable groups of 8-10
individuals, which usually contain only one
breeding pair. Their habitat consists of
enough trees to produce saps and gums
for food and hiding places for protection
from predators such as raptors and snakes.
They have enlarged and chisel-like leeth to
gnaw holes in trees. Adult marmosets have
black and gray fur with black fur over their
head and neck and bold white ear tuffs. Infants have all gray fur.
Marmosets can grow to 7'/2 inches (19 cm) (without tail) and have a
life span of 12 years.
Frontosa Clchlid
This colorful fish lives in the deep waters of Lake Tanganyika
in Africa. They have a white body with five or six vertical black
stripes on the sides. Their fins are various shades of blue.
Females are 9" to 12" (23 to 30 cm) and males 14" to 16" (35 to
40 cm) in length. They have a large hump on their head that is
formed from dorsal muscles. Frontosa means "with big
forehead" in Latin. As Frontosa Cichlids age, they loose their
brilliant color and their humps get larger. They are algae
eaters, but also feed on clamps and shrimps.
There are many applications of x-rays such as identifying
broken bones for health care, screening luggage at an airport
for security and revealing details of an artifact for historical
purposes. Can you think of more purposes for an x-ray?
Compare and contrast the skeletal structure of each animal.
What is similar about the mammals? Fish? Reptiles? Research the
definition of each group and determine their similarities and
differences. Try listing more animals in each category! Which
group do humans fall under?
Draw real animals! Place an x-ray on a light table and cover
with a plain piece of paper. Tape the paper in place. Trace
around the bone structure with a pencil, marker or crayon.
Remove the paper and color in the image. Use your real animal
drawing to make a creative collage or to illustrate a story.
Make a wall decoration! Tape a sheet of decorative paper
behind an Animal X-Ray and hang in your classroom or
bedroom! Alternatively, photocopy an x-ray and use crayon,
marker or colored pencil to fill in the white area.
Green Tree Python
Found in New Guinea and Cape York Peninsula of
Australia, this python coils on branches in rain forest
trees, bushes and shrubs. They are vivid green in
color with a broken white or dull yellow stripe. The
average length of a Green Tree Python is 4 feet
(1.25 m), but some can reach 7 feet (2.1 m)! They
are famous for their camouflage ability, which helps
them catch small rodents, birds and bats. They can
eat while hanging from a branch, due to their
strong tail! These snakes have heat sensitive pits
near their eyes, which they use to tell when a warm
or cold blooded animal comes within range. Green
Tree Pythons are oviparous (egg laying). They
incubate and protect their eggs. When hatched, the
babies are yellow, red or blue with purple and
brown stripes and spots. They all turn vibrant green
when adults.
Veiled Chameleon
Tills slow-moving lizard is tolerant of extreme levels of
temperature and humidity. They are found in the
deserts of Yemen and southern Saudi Arabia. Veiled
Chameleons have brown, tan, turquoise, green and
white scaly skin. They have the ability to change color.
When excited afraid, in dark or cold temperatures they
turn pale. When angry, in bright light or hot
temperatures they become darker in color. This reptile
lives in trees and can sit still for long periods of time.
Each eye can swivel nearly 180 degrees and both eyes
can point in different directions at the same time! They have a long tail and a
fast, sticky, extremely long tongue that is longer than their body! They catch their
prey, insects, with their unique tongue.
Dwarf Crocodile Eggs
Dwarf Crocodiles live in fresh water, slow-moving rivers, lakes, swamps and marshes in West Africa. This
reptile eats fish, birds and small land vertebrates. They are nocturnal and travel on land and in water.
They have a special valve in their throat that allows then to open their mouth under water! They have
rigid teeth and rough scales. The female assembles a mound of vegetation and places a clutch of eggs
inside. She will guard the nest and raise the young. The crocklets (babies) chirp to the mother from
inside the egg. Their sex is determined by the temperature at which the egg is kept. Once hatched, the
mother carries them in her mouth down to the river for their first swim!
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