Chambered Hearts
This number of heart chambers is found in adult reptiles, excluding crocodilians, where the partial wall, or septum, creates an incomplete separation between the left and right sides.
Three
The place blood goes to get oxygenated.
Lungs
The scientific name of a white blood cell.
Leukocyte
A catadromous fish, such as the American Eel, lives the majority of its feeding and growth life in this habitat.
Freshwater
The different types of hearts.
Two chambered heart, a three chambered heart, and a four chambered heart
This is the number of chambers in the heart of a typical fish, featuring one atrium and one ventricle, resulting in a single-circuit circulatory system.
Two
The types of circulation.
Systemic and pulmonary
The three cellular components of blood.
Platelets, red blood cells, and white blood cells
The primary physiological challenge faced by catadromous fish, like eels, when they move from freshwater to the ocean.
Osmoregulation
The animal that has two chambered hearts.
Fish
The heart type typically found in amphibians and most reptiles, featuring two atria but only one ventricle, leading to some mixing of oxygenated and deoxygenated blood.
Three-chambered heart
The vessels that carry blood into the right atrium of the heart.
Superior and inferior vena cavas
The things plasma transports.
Ions, wastes, and hormones
This specialized organ system in the fish must reverse its function—from taking in ions to excreting excess ions—to maintain homeostasis in saltwater.
Gills (or salt-excretion cells in the gills)
The animals that have an open circulatory system.
Invertebrates
This reptile is a notable exception to the typical three-chambered heart, possessing a four-chambered heart.
Crocodile (or alligator)
Prevents back flow in veins.
Valves
The hormone that regulates the production of red blood cells.
Erythropoietin?
The thing that powers the lymphatic system.
Osmotic pressure
The place where oxygenated and deoxygenated blood mix in a three chambered heart.
Ventricle
The two main circulatory circuits found in animals with four-chambered hearts.
Pulmonary and systemic circuits
The valve between the left atrium and left ventricle.
What is the mitral/tricuspid valve
The blood type that is known as a universal donor.
O-
The primary hormonal system that coordinates the physiological changes for migration, maturation, and transition between freshwater and saltwater environments.
Endocrine system
The type(s) of heart(s) found in reptiles.
Three chambered hearts and four chambered hearts