Characteristics Of Class Myxini

Submitted By Antonio-Jesus
Words: 463
Pages: 2
Characteristic Class Myxini Class Cephalospidomorphi Class Chondrichthyes Class Osteicthyes
Members (hagfishes, slime eels fish) (lamprey fish) (ratfish, skates, rays, sharks) (bony fishes)
Symmetry Bilateral Bilateral Bilateral Bilateral
Coelom and Body Organization Well-developed coelom Well-developed coelom Well-developed coelom Well-developed coelom
Germ Layers and Development Three germ layers
Ectoderm, mesoderm and endoderm Deuterostome Deuterostome Three germ layers
Ectoderm, mesoderm and endoderm Deuterostome multilayered epithelium or skin Three germ layers
Ectoderm, mesoderm and endoderm Deuterostome Three germ layers
Ectoderm, mesoderm and endoderm Deuterostome
Respiratory system Gills..
Seven gills on each side
-gills
gills
-lungs (swim bladder) in lungfish
Circulatory system Both closed and open blood vessels, with a heart system that is more primitive than that of vertebrates. Closed circulatory system
2 chambered heart
Closed circulatory system. Sharks have a two chambered heart. Their hearts are S-shaped tubes located in the head region of the shark. Blood is pumped by the heart through afferent branchial arteries to capillaries in the gills, where blood is oxygenated. Closed circulatory system
2 chambered heart
-arteries and veins
-aortic arches in gills
Skeletal system bony cartilaginous endoskeleton They lack almost every bone found in other vertebrates and have bones made entirely from cartilage. endoskeleton of cartilage bony endoskeleton
Nervous system Nerve cells hook up together to form a nervous system. A nerve cord is on the dorsal side sends and receives messages. I use two main senses in responding to my environment. These senses are smell and touch.
They have a flattened spinal cord, and unlike other vertebrates the dorsal
(sensory) and ventral (motor) roots of the spinal nerves arise alternately, instead of simultaneously, and remain separate. differentiated brain with two hemispheres
-specialized lobes for sight, smell, taste, and hearing -lateral line system differentiated brain with two hemispheres

Related Documents: Characteristics Of Class Myxini

Women During the Early World History Essay

Over the course of years or should say decades, women have left a remarkable mark on the world today. “Consequently, changes in status for many women in modern times-the right to own property, to vote, and to choose their own careers-may obscure the accomplishments made by women of earlier eras” (Walter & Maynes, 2001). Women have made an influence but small significant spheres. Women property rights consist of legal rights to acquire, own, sell and transfer property, collect and keep rents, keeps…

Words 742 - Pages 3

Sodomy in the united states Essay

Bob martinea History 320 December 9th , 2014 Final Paper The early twentieth century reflected a time period in the United States that viewed the act of sodomy as criminal, socially unacceptable and strictly outlawed. These feelings illustrated the social disregard of privacy towards sodomy and its attachment to sexual violence and abuse during this time period. Specifically, it was considered a crime that could lead to arrest and punishable by jail time. In 1908, the case of the people of NY…

Words 875 - Pages 4

Women of Strength: Indigenous Peoples’ Resistance to Colonialism Essay

1014381 AM305 Women of Strength: Indigenous Peoples’ Resistance to Colonialism 3,199 Women of Strength: Indigenous Peoples’ Resistance to Colonialism From their very first encounters with colonists, the indigenous women of Canada have been discriminated against, and disempowered by, the patriarchal society of Europeans and, later, Canadian society itself. Colonialism brought about an era of oppression that has irrevocably altered years of cultural and spiritual tradition. The implementation…

Words 2848 - Pages 12

Displaying Gender Essay

fell between male and female. Depending on how you are brought up, you will have different expectations associated with your sex. Now how does this all relate when we are talking about art history? Why and how are gender issues relevant or useful in a study of early twentieth century modern art? Art history in general is important to study because art is a reflection of a society’s values. And when studying anything it is important to think critically and always ask questions. “To examine critically…

Words 1252 - Pages 6

The Forgotten Women of Colonial and Revolutionary America Essay

The Forgotten Women of Colonial and Revolutionary America For throughout the history of education a great focus has been put on the men of colonial and revolutionary America. Students learn about the powerful leaders that lead to our freedom from England and the brave men that came to a new land for work. Hidden in the background of those lessons are the women. Just because they did not have the rights to stand up and lead an army or nation does not mean that they were useless to the new world.…

Words 1875 - Pages 8

Native Women Sexualization

Women, especially women of color, whether it be Hispanic, Native American, Black, or Asian, have never had easy lives throughout the course of history. While women of color have been overly sexualized, white women seem to have been disqualified from both expressing sexual behavior and from being sexualized. Regardless, the female body has been sexualized over and over to the benefit of men in power. Sexualization can go one of two ways as proven in the differences between Native American and colonial…

Words 1064 - Pages 5

Quest for Liberty in the U.S. Essay

The Revolution resulting in America was the most significant event in American History. This country would not be here without it. The Revolution led to an establishment of a constitution and a new foundation to start a country. We would still be part of England had we not had the Revolution. The constitution set up a basis upon which the most powerful nation in the world would grow. The Civil War is also one of the most influential events that helped to shape the United States. The division of the…

Words 1136 - Pages 5

Final Mandy Essay

Screening Mammography in Young Women Mandy D. Petrie Pima Medical Institute Screening Mammography in Young Women Turning forty may be a difficult time in a woman’s lifespan. Not only is a woman thinking about leaving the younger life of the thirties behind; she is thinking about turning the dreaded 40 and her first mammogram. The American Cancer Society has recommended that a woman should start her yearly screenings at the age of 40 even if the woman does not have a family history of cancer. The mammogram…

Words 984 - Pages 4

History S Influence On Women1 Essay

History’s Influence on Women History has cultivated and paved the way for women and their rights, since the mid 1800s, and now in 2014. Presently women have more rights and nearing equality each day, thanks to the fights in early American History. Although women currently are still struggling with equality in the United States, history has opened the door has lead the cause for change and the women’s rights movement. Women had to fight through difficult times to get through discrimination in the…

Words 1324 - Pages 6

Feminism: World War Ii and New Zealand Women Essay

In the late 19th century and early 20th century, European and other countries granted the right for women to vote. However in America the right to vote for women was passed in 1920. It may only be a 14 year difference, but to American women they showed American men how they wanted to be treated equally. American feminists were taking part in marches and parades on the US capital to show how they desired equal treatment and the ability to vote. The word feminist is derived from the word feminism…

Words 1185 - Pages 5