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Zoology (Marine Invertebrates) > Phylum Arthropoda > Flashcards

Phylum Arthropoda Flashcards

1
Q

it protects the body and provides attachment sites for muscles

A

exoskeleton

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2
Q

hard chitinous impregnated with lime salts covers the body

A

cuticle

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3
Q

It is secreted by a single layer of cells called the

A

epidermis

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4
Q

anterior rigid portion, consists of segments 1 to XIII

A

cephalothorax

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5
Q

posterior series of segments, include six segments and the telson

A

abdomen

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6
Q

Regions of the Body (possess in eachbody region)

A

head, thorax, and abdomen

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7
Q

convex dorsal plate

A

tergum

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8
Q

ventral transverse bar

A

sternum

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9
Q

plates projecting down sides

A

pleura

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10
Q

base of the limb

A

epimera

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11
Q

cuticular shield

A

carapace

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12
Q

indentation on the carapace

A

cervical groove

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13
Q

anterior pointed extension of the carapace

A

rostrum

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14
Q

beneath the rostrum, with moving peduncle

A

eye

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15
Q

ventral surface near the posterior end

A

mouth

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16
Q

terminal extension/segment

A

telson

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17
Q

variations of appendages

A

protopodite
endopodite
exopodite
antennules and antennae
mouth
thoracic region

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18
Q

basal segment

A

protopodite

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19
Q

inner branches

A

endopodite

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20
Q

outer appendages

A

exopodite

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21
Q

mandible and maxillae

A

mouth

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22
Q

maxillipeds, pinchers/chelipeds, walking legs, swimmerets 9 beneath the abdomen

A

thoracic region

23
Q

kinds of appendages

A

foliaceous
biramous
uniramous

24
Q

ex. second maxilla - (expansion)

A

foliaceous

25
Q

ex. swimmerets (pass through a stage)

A

biramous

26
Q

walking legs (final)

A

uniramous

27
Q

The only appendages that all crustaceans have in common is

A

two pairs of antennae

28
Q

each segment of a crustacean possess

A

one pair of biramous appendages

29
Q

Crustacean biramous appendages have a basal or first portion referred to as the

A

protopod

30
Q

means the first part of the foot

A

protopodite

31
Q

A branch on the outside

A

exopod

32
Q

a branch on the inside

A

endopod

33
Q

Sometimes the protopod has additional outgrowths besides the exo- and endopodites. These outgrowths are called

A

epipods and endites

34
Q

Appendages with all of these outgrowths are called

A

phyllopodus appendages

35
Q

where food are ground up by the

A

ossicles

36
Q

collective term for chitinous ossicles for chewing

A

gastric mill

37
Q

in the lateral wall of cardiac chamber for storage of calcareous matter for exoskeleton hardening

A

gastrolith

38
Q

colorless liquid where absorbed food passes, for food transport

A

blood

39
Q

compact mass that supplies the eyes, antennules and antenane with nerves

A

brain

40
Q

ganglia and connective of ventral nerve

A

ventral nerve cord

41
Q

ganglia and connective of ventral nerve

A

eye

42
Q

large fine lines that divided the cornea in four sided areas

A

facets

43
Q

long visual rod in the external part of the facet

A

ommatidium

44
Q

outermost fastened to the coxopodite

A

podobranchiae

45
Q

innner double row

A

arthrobranchiae

46
Q

excretory organs, pair of large bodies
- consists of bladder and a duct opening

A

green glands

47
Q

is the period during which calcium is resorbed from the old exoskeleton into the blood. The epidermis separates from the old exoskeleton, new setae form, and a new exoskeleton is secreted.

A

proecdysis/premolt

48
Q

the actual shedding of the old exoskeleton, takes place when the old exoskeleton splits along preformed lines.

A

ecdysis

49
Q

is the stage in which the soft cuticle gradually hardens and becomes calcified. At the end of this stage the cuticle is complete

A

metecdysis

50
Q

is a period of variableduration, from a few days in small forms to a year or more in some of the large forms.

A

intermolt

51
Q

a stage where they do not molt again after passing through a series of molts.

A

terminal anecdysis

52
Q

are cyclic changes that approximate a day in length

A

circadian rhythms

53
Q

special type of cyclic rhythms in plantonic and pelagic crustaceans exhibits with cladocernas, copepods, euphausids and decapods

A

vertical migrations

Zoology (Marine Invertebrates) (2 decks)

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