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The anatomy of the humans and the bald eagles

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Huiying Ou

on 23 May 2014

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Transcript of The anatomy of the humans and the bald eagles

Bald Eagle
Digestive System
The Anatomy of the Humans
and the Bald Eagles
Basic facts
: Wingspan is typically over 2m ( 6.5 ft), and body weight often exceeds 7 kg (15 lb)
: Nearly all of North America, from Florida to Alaska.
: Forested area near water that have tall trees.
: Fish, small mammals, birds
Muscular and skeletal system
Respiratory System
Nervous System
Eagles have a higher metabolic rate, they "process" their food more quickly than we do. This means they can trun foods into a form that they can absorb the energy that they need, quickly and efficiently.

Most importantly, their stomach is like a "gizzard", which we don't have. In the "gizzard", foods would ground down to a fine consistency to permit the rapid digestion.

Materials that cannot be digested, such as furs, feathers, and occasionally bones, will then travel backward from the gizzard up to the mouth and cast out from the mouth.

Eagles have very strong stomach acids, and it can digest bone quite well, which help them in their own bone formation. Another major difference is that eagles have something called a "crop", it can store foods for days. Therefore, they can still be alive without food for several days.
Circulatory System
Visual System
Eagle eyes are about the same size as human eyes. But an eagle eye has a much different shape, the back is flatter and larger, giving them a much larger image than we can see. And its retina has much more concentrated rod and cone cells, which send sight information to the brain.

In a human, the fovea has 200,000 cones per millimeter, giving us perfect vision. In the central fovea of an eagle there are about a MILLION cones per millimeter. That's about the same number of visual cells as the finest computer monitor has when set at the highest resolution.
The circulatory system of eagles is made up of a heart and blood vessels that function in a highly efficient manner. The circulatory system is responsible for transporting oxygen throughout the blood, clearing out waste materials, and helping to regulate body temperature. Like humans, eagles have four-chambered hearts, with arteries transporting oxygenated blood away from the heart and veins returning the deoxygenated blood back to the heart. One breath is taken every 6 to 10 heartbeats by eagle.

Eagles have external ears opening on both sides of the bill. They also have very well developed lungs that need to supply the body with all of the necessary oxygen for flight. They also have air sacs, which are extensions off of the lungs that absorb heat from the body to be exhaled, which aids in cooling off the body.

Differently, there are 3 major parts of the human respiratory system: the airway, the lungs, and the muscles of respiration. The airway, which includes the nose, mouth, pharynx, larynx, trachea, and bronchi, carries air between the lungs and the body’s exterior. Finally, the diaphragm and muscles, work together to act as a pump, pushing air in and out of the lungs during breathing.
Thank you!
The human nervous system serves as the body control center. It conducts stimuli from sensory receptors to the brain and spinal cord and that conducts impulses back to other parts of the body.
The human nervous system has two main parts: the central nervous system and the peripheral nervous system.
Eagles have a similar central nervous system that is made up of a brain, a spinal chord and nerves. Its job is to integrate sensory impulses from the environment, to store learned information, and to coordinate voluntary and involuntary functions and movements.
The skeleton of a bald eagle weighs 0.5 lbs (250 to 350 grams), which is only 5 to 6% of the total weight of the bird. The bones are extremely light, because they are hollow and it is easier for them to fly up to the sky. The feathers weigh twice as much as the bones
Even though the skeleton is light, it is strong enough for the eagles to fly. Also, with a large breastbone to support powerful muscles for flapping wings up and down.
By: Huiying Ou, Haiyan Wang
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