Chordata Daniel Micheli Sahil Kazmi Shannon De Peralta Period 1 Mammals II-Print-C jpeg
Reproduction/Sample Animals Prototheria: composed of egg laying mammals. Platypus, echidna Marsupials: young are born tiny and immature and must climb into the mother’s pouch where they grab hold of a teat and do not leave until they are mature. Kangaroos, koalas, wombats, possums Eutheria: composed of all the placental mammals, whose young form as embryos in the mother’s stomach. Dogs, bats, whales, elephants, squirrels, manatees, cows, humans g Daniel Micheli
Body Cavity: Coelum - a fluid filled cavity formed within the mesoderm. Body Symmetry: Bilateral symmetry- Symmetrical arrangement of an organism or part of an organism along a central axis, so that the organism or part can be divided into two equal halves. Bilateral symmetry is a characteristic of animals that are capable of moving freely through their environments Daniel Micheli
Central Nervous System: Brain (cerebrum, cerebellum), spinal cord Circulatory System: Four Chambered Heart /06/nervous%20system.jpg Sahil Kazmi
Digestive System: Mouth, pharynx, esophagus, stomach, intestine, anus. Excretory System: Mammals have kidneys, ureter, bladder, and urethra for waste regulation in the body. andphysiology/f27-1al_urinary_system__c.jpg Sahil Kazmi
Locomotion and musculature: Alternate contractions of muscles for backward and forward movement. Limbs Tails Wings Skeletal Type: Endoskeleton with matrix of calcium phosphate. Most mammals have 7 cervical vertebrae. mages/others/vertebrates.jpg Shannon De Peralta
Sensory Structures: very highly developed and specialized organs that are an extension of the central nervous system, with a sole function to take in information and relate it to the brain. Include eyes, nose, mouth, etc. Gas Exchange: Mammals inhale oxygen, exhale carbon dioxide; fish and amphibians use gills BAc/1g0LfsTXgKs/s400/5-senses.jpg Shannon De Peralta
Unique Features/Other Info. Mammals all possess teeth. There are over 5,400 species of Mammals. All Mammals have sweat glands. All living mammals use two bones for hearing. Mammalian brains have a neocortex, a region of the brain exclusive to mammals.
Which of the following phyla contains all vertebrates? Porifera Mollusca Anthropoda Chordata
Answer: Chordata
Which of the following phyla contains organisms with bilateral symmetry? Cnidaria Porifera Monogeneans Chordata
Answer: Chordata
Members of which of the following phyla use wings, fins and limbs for locomotion? Chordata Platyhelminthes Nematoda Mollusca
Answer: Chordata
To what phylum do humans belong? Echinodermata Chordata Annelida Cnedaria
Answer: Chordata