Comparison of the systems Essay

In this assignment you describe and compare the circulatory, skeletal, and respiratory systems of sharks, iguanas, eagles, and humans. Answer each of the following questions in 25 to 50 words. Circulatory System Shark How would you describe the structure and function of this animal’s circulatory system? Include any unique characteristics. The shark’s heart which is a major component in its circulatory system is shaped like an S and is located in the head region. The sharks hear has 2 chambers and atrium and a ventricle. Blood is pumped by the heart through the afferent brachial arteries to capillaries in the gills where the blood is oxygenated. How does this animal’s circulatory system work? The circulatory system centers around the heart where blood is pumped through arteries then through tissues of the body to distribute nutrients throughout the body and back to the heart. Iguana How would you describe the structure and function of this animal’s circulatory system? Include any unique characteristics. The Iguana has a unique situation when it comes to the circulatory system because the Iguana has a 3 chamber heart. Two of the chambers of the Iguana’s heart are atria and one is ventricle. The ventricle has the job of keeping oxygenated blood from being mixed in with de-oxygenated blood. How does this animal’s circulatory system work?Since the Iguana has a 3  chambered heart it would not be uncommon for the Iguana to have a circulatory system that is double. Because the Iguana has a double circulatory system this causes blood to have to pass through the heart twice. Blood first flows from the heart of the Iguana to the lungs and then back to the heart where it is then distributed throughout the Iguana’s body using tissues, after the blood leaves tissues it flows back to the heart. Eagle How would you describe the structure and function of this animal’s circulatory system? Include any unique characteristics. How does this animal’s circulatory system work? Human How would you describe the structure and function of this animal’s circulatory system? Include any unique characteristics. The human circulatory system is like a recycling system. The heart is a main part of the circulatory system. The heart pumps to help blood move throughout vessels in the body. Blood vessels which include arteries carry blood from the heart to tissues in the body to keep them alive. Veins carry blood back to the heart from the tissues and capillaries which are tiny veins that connect the arteries and veins. The primary role of blood in the circulatory system is to transport substances to and from all parts of the body How does this animal’s circulatory system work? As blood moves throughout the circulatory system it is acting as a transporter picking up and dropping off substances as it flows. Oxygen is picked up from the lungs and nutrients from the food digested is picked up from the intestines and is delivered to the heart where it is sorted and redistributed to the body getting rid of things the body doesn’t need in the process. What is similar in all of these circulatory systems? What is different in all of these circulatory systems? Respiratory System Shark How would you describe the structure and function of this animal’s respiratory system? Include any unique characteristics. Sharks can respire by pumping water over its gills. When the shark open and closes its mouth water enters into the mouth then the gill chambers. Water then exits through gill slits, while in the gills blood filiments absorbs oxygen from the incoming water. How does this animal’s respiratory system work? A sharks respiratory system has no blood vessels and receive its oxygen directly from surrounding tissues and fluids Iguana How would you describe the structure and function of this animal’s respiratory system? Include any unique characteristics. How does this animal’s respiratory system work? Eagle How would you describe the structure and function of this animal’s respiratory system? Include any unique characteristics. How does this animal’s respiratory system work? Human How would you describe the structure and function of this animal’s respiratory system? Include any unique characteristics. The respiratory  system of humans is quite complex as air enters into the human body it comes into contact with the diaphragm and other muscles of the thorax known as the chest that acts as an air pump. When the air enters the lungs which constitute as the exchange surface taking from the air what the body needs and getting rid of what it does not. After the air has entered the lungs and needed CO2 and O2 is extracted air then leaves through airways like the nose, mouth trachea and bronchi. How does this animal’s respiratory system work? The human respiratory system takes the air that enters in to the human body and extract needed oxygen from the air and distributes it throughout the body. The human respiratory system also acts as a protector from unsafe particles that may be taken in. The human respiratory system will get rid of all bad or unneeded air. What is similar in all of these respiratory systems? What is different in all of these respiratory systems? Skeletal System Shark How would you describe the structure and function of this animal’s skeletal system? Include any unique characteristics. Sharks belong to a special group of fish called Elasmobranchs which are fish with no bones. A shark’s skeleton is completely made up of cartilage. Some parts of the shark’s skeleton like the vertebrae are calcified. How does this animal’s skeletal system work? The shark’s cartilage does not contain any blood vessels so it receives its oxygen directly from surrounding tissue and fluids. If a shark does not constantly move it will sink, which is where it cartilage skeleton comes in handy giving the shark the ability to float. A complete cartilage skeleton allows the shark to be very quick and agile. Iguana How would you describe the structure and function of this animal’s skeletal system? Include any unique characteristics. How does this animal’s skeletal system work? Eagle How would you describe the structure and function of this animal’s skeletal system? Include any unique characteristics. How does this animal’s skeletal system work? Human How would you describe the structure and function of this animal’s skeletal system? Include any unique characteristics. The human skeleton is made up of mostly rigid brittle bone. The human skeleton is mostly cartilage as babies but changes to bone as humans get older. Cartilage is a firm but flexible material and it is hard but not brittle. The human skeleton needs a combination of rigidity and flexibility and must provide a strong foundation for skeletal muscles. Cartilage is in places where firmness and flexibility are needed such as connections between individual bones. How does this animal’s skeletal system work? Human skeletal system works by the use of contracting muscles. When muscles generate force by contracting or shortening to move the human skeleton the system is at work. Skeletal muscles are attached to the bones by means of tendons which are tough bands. Muscles are a pulling not a pushing force to create movement. What is similar in all of these skeletal systems? What is different in all of these skeletal systems?