Find your subject
in our database of
Spark your creativity...
an impressive essay!
The two organisms discussed I this report are humans and Frogs. The Taxonomy of an organism includes kingdom, phylum, class, order, family, genus, and species. Humans are classified by the kingdom animalia, phylum chordate, class mammalia, order primates, family hominidae, genus homo, and species homo sapiens. Frogs are classified as kingdom animalia, phylum chordate, and genus and species Rana pipens. A frogs habitat is usually spent on land for most of its adult life. However frogs reproduction and development must take place in water or in a moist place. Some adaptations frogs have that aid in their survival are having thin skin that contains mucus-secreting glands. Also they have two pairs of limbs, which can be used for swimming, jumping or walking.
The anatomy of a frog is very similar to the anatomy of humans. Both humans and frogs have the same kinds of organs and systems of organs. Digestion in a frog begins in the mouth. Although the frog has teeth, they are basically useless. The frogs tongue however is very important. Most of the time the tongue is folded back toward the throat. From here the frog is able to flick out the tongue very fast to catch its prey. The tongue is also very sticky. From the frogs mouth food passes into the stomach by the esophagus. From there the food moves into the small intestine. This is where most of the digestion takes place. There are large digestive glands, the liver and the pancreas, which are attached by ducts. Liquid wastes from the kidneys go through the ureters to the urinary bladder. Solid wastes from the large intestine go into the cloaca. Both the liquid and solid wastes leave the body through the cloaca. The digestive system in humans is much more complicated. !
In humans digestion beings in the mouth. Once food enters the mouth chewing and saliva starts to break it up and make it easier to swallow. Then the food goes down through the esophagus to the stomach. While in the stomach, contractions of the muscular wall continue to break down food mechanically. Chemical digestion continues when acid and enzymes are secreted into the stomach cavity. Then the food passes through the small intestine. Here enzymes from the pancreas complete the chemical part of digestion. Fat is digested with bile. Bile is made in the liver and stored in the gall bladder. Whatever is left of the food, mostly liquid, enters the large intestine. Here most of the fluid is absorbed. Whatever is not absorbed is passed out of the body through the anus.
The frog, unlike a human, has only a three chambered heart. The frog only has one lower chamber while a human has two, the right and left ventricle. The frog has one muscular ventricle and two thin-walled atria. Blood that leaved the ventricle enters a large blood vessel that branches into two atria's. These then divide into many smaller arteries, which then are divided into capillaries. Veins are used to return blood from the capillaries to the heart. The right and left pulmonary veins carry blood from the lungs to the left atrium. As the frog breaths using air with its lungs the blood is oxygenated. Blood from all the other parts of the body is brought back through three large veins into a thin-walled sac. Blood form the sac enters the right atrium. The right and left atria then empty blood into the ventricle. So therefore blood that is pumped out by the ventricle is a mixture of oxygenated blood that is from the left atrium and deoxygenated blood that is from the ri!
ght atrium. Circulation in humans is a bit different. Humans have a four chambered heart. The two upper, think-walled chambers are the atria. The two lower, thick-walled chambers are the ventricles. The circulatory system consists of two major pathways. Pulmonary circulation, which is the first pathway, carries blood between the heart and the lungs. Systemic circulation, which is the second pathway, carries blood between the heart and the rest of the body. Pulmonary circulation removes carbon dioxide from the blood and adds oxygen. The only arteries that are able to carry oxygen-poor blood are the pulmonary arteries. Systemic circulation supplies blood to the liver. Capillaries and veins carrying nutrient-rich blood from the digestive organs
Terminology mentioned in this term paper
nervous system, vitamins,
Sports mentioned in this term paper
Names mentioned in this paper
Bile, Cowper, Addison,
Health Conditions talked about in this essay
acromegaly, dwarfism, Hyperthyroidism, Diabetes,
Drug referenced in this essay
growth hormone, testosterone, progesterone, cortisol,
Keywords talked about in this essay
frog, the frog, nervous system, large intestine, systemic circulation, glands, human, blood vessels, carbon dioxide, hormones, kidneys, reproductive system, capillaries, Pulmonary circulation, Coronary circulation, peripheral nervous system, central nervous system, renal circulation, middle ear, cloaca, cerebrum, spinal cord, digestion, small intestine, nerve, female reproductive system, left atrium, oxygenated blood, sperm, right atrium, blood flow, arteries, testes, human nervous system, sex hormones, kingdom animalia, anterior pituitary gland, male sex hormone, vein, respiratory system, wastes, breathing, human ear, right and left, male and female, human eye, human brain, Thyroid gland, bladder, inferior vena cava,