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Phylum Chordata

Across
lacking an internal mechanism for regulating body heat.
a heart chamber from which blood is pumped out.
development that occurs inside the female, allowing the offspring to gain nutrients and vital substances from the mother through a placenta.
a mixture of salts and phospholipids that aids in the breakdown of fat.
The _____ lobes are the lobes of the brain that receive signals from the receptors in the nose
_____ fertilization is the process by which the female lays eggs and the male fertilizes them once they are outside of the female.
a skeleton on the inside of a creature's body, typically composed of bone or cartilage.
the covering for the gills on bony fish (not sharks)
development that occurs in an egg that is hatched inside of the female's body.
the vein carrying oxygenated blood and dumps it into the heart.
The sinus _____ is the chamber that receives the oxygen poor blood that has come from internal organs of the amphibian.
A circulatory system in which the oxygen carrying blood cells never leave the blood vessels.
cells that promote the formation of bone tissue by producing the bone matrix.
holds on to the oxygen in the blood.
the lobes of the brain that integrate sensory information and coordinate the creature's response to that information.
Down
tiny, thin walled blood vessels that allow the exchange of gases and nutrients between the blood and the cells of the body.
The _____ lobes are the lobes of the brain that receive signals from the receptors in the eyes.
segments of bone or some other hard substance that are arranged into a backbone.
blood vessels that carry blood away from the heart.
a fish's sperm
the portion of the skeleton that supports and protects the head, neck, and trunk (backbone, ribs, and skull)
The _____ oblongata is the lobe that coordinate vital functions, such as those of the circulatory and respiratory systems, and transport signals from the brain to the spinal cord.
a life cycle in which creatures are hatched in fresh water, migrate to salt water as adults, and then go back to fresh water to reproduce.
attaches to the axial skeleton and has limbs attached to it. (Pectoral girdle and arms - pelvic girdle and legs)
mature bone cells that are surrounded by the bone matrix.
Blood cells that contain hemoglobin - carries oxygen
a specially designed portion of the male's pelvic fins used in reproduction
frog larvae
"a state of extremely low metabolism and respiration, accompanied by lower normal body temperatures."
development that occurs in an egg and is hatched outside the female's body.
Bone tissue that is not tightly packed
Bone tissue that is tightly packed, and is very hard, and rock like.
the lobe that controls involuntary actions and refines muscle movement.
The _____ nerve cord is on top side of the body.
Bone _____ is soft tissue inside (middle) a bone that produces blood cells
Slender projections (tentacle-like strands) that surround the opening of the mouth of the Lancelet - act as sensory devices and as a filter for the water passing into the body.
a heart chamber that receives blood.
The posterior cardial _____ carries clean blood back to the heart from the kidneys.