PHYLUM CHORDATA
The phylum chordata contains the most familiar species, including humans. All chordates have pharyngeal slits, which are openings that connect the inside of the throat to the outside of the neck. They are named after their nortocord which is a rodlike nerve chord. A tail is also present in all of the initial species of Chordates. However, this characteristic has been depleted in humans.
The phylum chordata contains the most familiar species, including humans. All chordates have pharyngeal slits, which are openings that connect the inside of the throat to the outside of the neck. They are named after their nortocord which is a rodlike nerve chord. A tail is also present in all of the initial species of Chordates. However, this characteristic has been depleted in humans.
AGAMA AGAMA (African Redhead Agama)
- Closed Circulatory system
- A closed circulatory system is a system that has the blood always enclosed and not filling body cavities. The blood is pumped by the heart through vessels to the rest of the body.
- 3-chambered heart
- Consists of a heart, vascular system with blood, and a lymphatic drainage system
- Hydrostatic pressure is created to facilitate blood flow, swelling of the head to shed skin, and defense from predators through blood squirting
ALLIGATOR MISSISSIPPIENSIS (American Alligator) The American Alligator has a closed circulatory system. A 4- chambered heart is present. First organ system that develops in initial development is the circulatory system. The circulatory system transports wastes, gasses, and nutrients throughout the body through vessels. The circulatory system helps to keep homeostasis in the kidneys. During digestion, the American alligator diverts blood through the left aorta which bypasses the lung.
IGUANA IGUANA ( Green Iguana) The Green Iguana has a closed circulatory system. A three- chambered heart is present that consists if a right atria, left atria, and a ventricle. The circulatory system transports blood, respiratory gasses, nutrients and sometimes waste. This type of circulation is very similar to that of the African Redheaded Agama.