-
Vertebrae
Segments of bone or some other hard substance that are arranged into a backbone.
-
Notochord
A rod of tough, flexible material the runs the length of a creature's body, providing the majority of it's support.
-
Endoskeleton
A skeleton on the inside of a creature's body, typically composed of bone or cartilage.
-
Bone Marrow
A soft tissue inside the bone that produces blood cells.
-
Axial skeleton
The portion of the skeleton that supports and protects the head, neck, and trunk.
-
Appendicular skeleton
The portion of the skeleton that attaches to the axial skeleton and has the limbs attached to it.
-
Closed circulatory system
A circulatory system in which the oxygen-carrrying blood cells never leave the blood vessels.
-
Arteries
Blood vessels that carry blood away from the heart.
-
Capillaries
Tiny, thin-walled blood vessels that allow the exchange of gases and nutrients between the blood and cell.
-
Veins
Blood vessels that carry blood back to the heart.
-
Olfactory lobes
The regions of the brain that receive signals from the receptors in the nose.
-
Cerebellum
The lobe that controls involuntary actions and refines muscle movement.
-
Medulla oblongata
The lobes that coordinate vital functions, such as those of the circulatory and respiratory system, and transport signals from the brain to the spinal cord.
-
Internal fertilization
The process by which the male places sperm inside the female's body, where the eggs are fertilized.
-
External fertilization
The process by which the female lays eggs and the male fertilizes them once they are outside of the female.
-
Oviparous development
Development that occurs in an egg which is hatched outside the female's body.
-
Ovovivipaous developments
Development that occurs is an egg which is hatched inside the female's body
-
Viviparous development
Develpment that occurs inside the female, allowing the offspring to gain nutrients and vital substances from the mother through a placenta.
-
Anadromous
A lifecycle in which creatures are hatched in fresh water, migrate to salt water as adults, and then go back to fresh water in order to reproduce.
-
Bile
A mixture of salts and phospholipids that aids in the breakdown of fat.
-
Atrium
A heart chamber that receives blood.
-
Ventricle
A heart chamber from which blood is pumped out
-
Ectothermic
Lacking an internal mechanism for regulating body heat.
-
Hibernation
A state of exrememly low metabolism.
|
|