Ch 14 7Th Grade

Front 1

chordate

Back 1

an animal that has a notochord, a nerve chord, pharyngeal pouches, and a postanal tail present at some stage in its development.

Front 2

notochord

Back 2

firm but flexible structure that extends along the upper part of a chordates body.

Front 3

postanal tail

Back 3

muscular structure at the end of a developing chordate.

Front 4

nerve chord

Back 4

tube-like structure above the notochord that in most chordates develops into the brain and spinal chord.

Front 5

pharyngeal pouches

Back 5

the paired openings found in the area between the mouth and digestive tube in a developing chordate.

Front 6

endoskeleton

Back 6

supportive framework of bone and/ or cartilage that provides an internal place for muscle attachment and protects a vertebrate’s internal organs.

Front 7

cartilage

Back 7

tough, flexible tissue that joins vertebrae and makes up all or part of the vertebrate endoskeleton

Front 8

vertebrae

Back 8

backbones that are joined by flexible cartilage and protects a vertebrate’s spinal nerve chord.

Front 9

ectotherm

Back 9

a vertebrate animal whose internal temperature changes when the temperature of its environment changes.

Front 10

endotherm

Back 10

a vertebrate animal with a nearly constant internal.

Front 11

fin

Back 11

structure used by fish for steering, balancing, and movement.

Front 12

scales

Back 12

thin, hard plates that cover a fish’s skin and protect its body.

Front 13

hibernation

Back 13

inactivity in cold weather; cyclic response of activity and metabolism that occurs during periods of cold temperaturesand limited food

Front 14

estivation

Back 14

inactivity in hot, dry months.

Front 15

amniotic egg

Back 15

egg covered with a shell that provides a complete environment for the embryo’s development