Animals With Spines: Phylum Chordata Flashcards
What is a notochord?
A rod of tough, flexible material that runs the length of the creature’s body, providing the majority of its support.
What is an endoskeleton?
A skeleton on the inside of a creature’s body, typically composed of bone or cartilage.
What is bone marrow?
A soft tissue inside the bone that produces blood cells.
What is an what is an axial skeleton?
The portion of the skeleton that supports and protects the head, neck, and trunk.
What is in appendicular skeleton?
The portion of the skeleton that attaches to the axial skeleton and has the limbs attached to it.
What is a closed circulatory system?
A circulatory system in which the oxygen-carrying blood never leave the blood vessels.
What are arteries?
Blood vessels that carry blood away from the heart.
What are capillaries?
Tiny, thin walled blood vessels that allow the exchange of gases and nutrients between the blood in the cells of the body.
What are veins?
Blood vessels that carry blood back to the heart.
What are olfactory lobes?
The lobes of the brain that receives signals from the receptors in the nose.
What is a Cerebrum?
The lobes of the brain that integrates sensory information to coordinate the creature’s response to that information.
What are the Optic lobes?
The lobes of the brain that receives signals from receptors in the eyes.
What is the Cerebellum?
The lobe that controls involuntary actions and refines muscle movement.
What is the Medela oblongata?
The lobes that coordinate vital functions, such as those of the circulatory and respiratory systems, and transport signals from the brain to the spinal cord.
What is a vertebrae?
Segments of bone or some other hard substance that are arranged into a backbone.
What is Oviparous development?
Development that occurs in an egg that is hatched outside the female’s body.
What is Ovoviviparous development?
Development that occurs in an egg that is hatched inside the female’s body.
What is Viviparous development?
Development that occurs inside the female, allowing the offspring to gain nutrients and vital substances from the mother through a placenta.
What does Anadromous mean?
A life cycle in which creatures are hatched in fresh water, migrate to salt water as adults, and then go back go fresh water in order to reproduce.
What is Bile?
A mixture of salts and phospholipids that aids in the breakdown of fat.
What is an Atrium?
A heart chamber that receives blood.
What is a Ventricle?
A heart chamber from which blood is pumped out.
What does Ectothermic mean?
Lacking an internal mechanism for regulation body heat.
