Download Chapter 23 and 24 Vocabulary

Chapter 23 and 24 Vocabulary
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3. / Any of various arthropods of the class
Arachnida, such as spiders, scorpions, mites,
and ticks, characterized by four pairs of
segmented legs and a body that is divided into
two regions, the cephalothorax and the
abdomen.
7. / the translucent, non-living, jelly-like
substance found between the two epithelial
cell layers (i.e., between the ectoderm and
endoderm) in the bodies of cnidarians and
sponges.
10. symmetry / a characteristic of animals that
are capable of moving freely through their
environments.
11. / Any of various widespread arthropods of
the class Crustacea that live mostly in water
and have a hard shell, a segmented body, and
jointed appendages. Crustaceans include
crabs, lobsters, shrimp, barnacles, and
copepods.
14. / the external skeleton that supports and
protects an animal's body, in contrast to the
internal skeleton (endoskeleton) of, for
example, a human.
17. / Any small bony or chitinous structure
found in various skeletal parts of animals. The
term ossicle usually refers to any of the chain
of bones in the mammalian ear
18. lung / a type of respiration organ used for
atmospheric gas exchange that is found in
many arachnids, such as scorpions and
spiders.
19. / a subtaxon of the Bilateria branch of the
subkingdom Eumetazoa, within Animalia, and
are distinguished from protostomes by their
deuterostomic embryonic development; in
1. / actual living organisms or the toxins
produced by them. Examples include viruses,
bacteria, fungi, and nematodes.
2. / the main structural protein found in skin
and other connective tissues, widely used in
purified form for cosmetic surgical treatments.
4. digestive tract / Passageway of food that
begins at the mouth down to the throat,
esophagus, stomach, intestines, and finally to
the anus
5. / Any of various arthropods of the
subphylum Chelicerata, having mouthparts
with chelicerae, a body composed of two main
parts, and no antennae, and including the
arachnids and the horseshoe crabs
6. / a fluid-filled body cavity that is
completely lined by tissue created from the
mesoderm, the middle layer of the primary
cells found in an embryo. It is typically found
in multicellular organisms, which are living
things that have more than one cell.
8. / Any of a major group of animals defined
by its embryonic development, in which the
first opening in the embryo becomes the
mouth.
9. / A second body cavity (the first being the
gut) which occupies a space between the
mesoderm of the body wall and the endoderm
of the gut.
12. / an animal of a large group distinguished
by the possession of a backbone or spinal
column, including mammals, birds, reptiles,
amphibians, and fishes.
13. / an animal lacking a backbone, such as an
arthropod, mollusk, annelid, coelenterate, etc.
The invertebrates constitute an artificial
deuterostomes, the first opening (the
blastopore) becomes the anus, while in
protostomes, it becomes the mouth.
24. / an external tracheal aperture of a
terrestrial arthropod that in an insect is usually
one of a series of small apertures located
along each side of the thorax and abdomen
25. cavity / a structure found in primitive
animal phyla. It is responsible for both the
digestion of food and the transport of nutrients
throughout the body.
28. / an invertebrate animal having an
exoskeleton (external skeleton), a segmented
body, and jointed appendages (paired
appendages). Arthropods form the phylum
Arthropoda, which includes insects,
arachnids, myriapods, and crustaceans.
29. / The lower jaw of a vertebrate animal. 2.
Either the upper or lower part of the beak in
birds. 3. Any of various mouth organs of
invertebrates used for seizing and biting food,
especially either of a pair of such organs in
insects and other arthropods.
30. / a water-impervious protective layer
covering the epidermal cells of leaves and
other parts and limiting water loss
32. / refers to the division of some animal and
plant body plans into a series of repetitive
segments.
34. / The posterior segment of invertebrates,
after the thoracic segment
35. / A part or organ, such as an arm, leg, tail,
or fin, that is joined to the axis or trunk of a
body
37. / a large family of similar genes that direct
the formation of many body structures during
early embryonic development
38. symmetry / a basic body plan in which the
organism can be divided into similar halves
by passing a plane at any angle along a central
axis, characteristic of sessile and bottomdwelling animals, as the sea anemone and
starfish
division of the animal kingdom, comprising
95 percent of animal species and about 30
different phyla.
15. / The polyp body form is sessile,
elongated, and hollow. Their lower end is
attached to a substratum
16. / fixed in one place; immobile.
20. vascular system / a hydraulic system used
by echinoderms, such as sea stars and sea
urchins, for locomotion, food and waste
transportation, and respiration. The system is
composed of canals connecting numerous
tube feet.
21. / a dorsal (upper) section of the
exoskeleton or shell in a number of animal
groups, including arthropods, such as
crustaceans and arachnids, as well as
vertebrates, such as turtles and tortoises
22. feeder / an animal (such as a clam or
baleen whale) that obtains its food by filtering
organic matter or minute organisms from a
current of water that passes through some part
of its system.
23. / colloquially called the windpipe, is a
cartilaginous tube that connects the pharynx
and larynx to the lungs, allowing the passage
of air, and so is present in almost all airbreathing animals with lungs.
26. / the head and chest on crustaceans and
arachnids.
27. / genes which regulate the development of
anatomical structures in various organisms
such as insects, mammals, and plants.
30. / A tough, semi transparent substance that
is the main component of the exoskeletons of
arthropods, such as the shells of crustaceans
and the outer coverings of insects.
31. / Traditionally in medicine, a vector is an
organism that does not cause disease itself but
which spreads infection by conveying
pathogens from one host to another.
33. / A capsule within specialized cells in the
tentacles of cnidarians, such as jellyfish and
40. / a form of cnidarian in which the body is
shaped like an umbrella
corals, containing a barbed, threadlike tube
that delivers a toxic sting to predators and
prey.
36. / a taxonomic rank below kingdom and
above class
37. / The body cavity found in many
invertebrates where the hemolymph circulates
through
39. / an anatomical structure that is used by
mollusks for feeding, sometimes compared to
a tongue. It is a minutely toothed, chitinous
ribbon, which is typically used for scraping or
cutting food before the food enters the
esophagus.