Animal - Deuterostome Flashcards Preview

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Flashcards in Animal - Deuterostome Deck (33)
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1
Q

deuterostome

A

major lineage of bilaterian animals that share embryological development patter

  • anus b4 mouth
  • large w/ complex bodies
2
Q

echinoderm

A

major lineage of deuterostomes
- adult bodies w/ 5-sided radial symmetry, water vascular system & tube feet

(ie) sea urchins, sand dollars, sea stars

3
Q

endoskeleton

A

bony or cartilaginous structures w/in body that provide support

(ie) plates in echinoderms

4
Q

water vascular system

A

(echinoderms) system of fluid-filled tubes & chambers

- fcn: hydrostatic skeleton

5
Q

tube feet

A

one of many small, mobile, fluid-filled extensions of water vascular system of echinoderms

  • podium, ampula
  • used in locomotion, feeding & respiration
6
Q

podium

A

part extending outside body

- type of tube feet

7
Q

ampula

A

bulb w/in body

- type of tube feet

8
Q

pharyngeal gill slit

A

set of parallel openings from throat to outside

  • fcn: feeding & gas exchange
  • diagnostic trait of chordates
9
Q

nerve cord

A

(chordate animals) hollow bundle of nerves extending from brain along dorsal (back) side of animal

  • cerebrospinal fluid inside central channel
  • defining ft. of chordates
10
Q

notochord

A

supportive & flexible rod in back of a chordate embryo

  • central to developing spinal cord
  • replaced by vertebrae in most adult vertebrates
  • defining ft. of chordate
11
Q

vertebrae

A

cartilaginous or bony elements that form backbones of vertebrae animals

12
Q

cranium

A

bony, cartilaginous or fibrous case enclosing & protecting vertebrate brain

  • forms part of skull
  • aka braincase
13
Q

cartilage

A

type of vertebrate connective tissue that consists of relatively few cells scattered in a stiff matrix of polysaccharaides & protein fibers
- fcn: structural support

14
Q

tetrapod

A

any member of lineage that includes vertebrates w/ 2 pairs of limbs

(ie) amphibians, mammals, reptiles + bird

15
Q

bone

A

type of vertebrate connective tissue

- include: living cells + blood vessels

16
Q

amniotic egg

A

egg w/ watertight shell, case enclosing an amnion, yolk sac & waste sac

17
Q

amnion

A

membrane-bound water supply in amniotic egg

18
Q

yolk sac

A

food supplly in amniotic egg

19
Q

allantois

A

waste sac in amniotic egg

20
Q

gill arches

A

(aquatic vertebrates) a curved region of tissue btwn gills

- gills are suspended from gill arches

21
Q

albumen

A

solution of water + protein in amniotic egg

  • particularly in albumin
  • fcn: nourish growing embryo, pillow for embryo
  • aka egg white
22
Q

placenta

A

structure that forms in pregnant uterus from maternal & fetus tissues
- fcn: delivers oxygen to fetus, exchanges nutrients & waste btwn mother & fetus, anchors fetus to uterine wall

23
Q

gestation

A

period of development inside mother

  • implantation to birth
  • live birth species
24
Q

parental care

A

any action by which animal expends energy or assumes risks to benefit offspring

  • increase offspring survival
  • less offspring/gestation

(ie) nest building, feeding, defense

25
Q

lactate

A

production of milk to feed offspring

- from mammary glands (mammals)

26
Q

endotherm

A

an animal whose primary source of body that is internally generated

27
Q

mammary gland

A

specialized exocrine gland that produce & secrete milk for nursing offspring

28
Q

swim bladder

A

gas-gilled organ of many ray-finned fishes that regulates buoyancy

29
Q

feathers

A

specialized skin outgrowth, composed of beta-keratin

  • present in all birds & some nonavian dinosaurs
  • fcn: flight, insulation, display
30
Q

pentaradial symmetry

A

5-sided symmetry in adult echinoderm

31
Q

chordate

A

characteristics:

  • pharyngeal gill slits
  • dorsal hollow nerve cord
  • notochord
  • muscular, post-anal tail
32
Q

deuterostome diversification

A

(1) bony exoskeleton - protection
(2) jaws + teeth - grip prey & injure
(3) bony endoskeleton - swim faster
(4) limbs capable of moving on land - new resources + run from predator
(5) amniotic egg - protection

33
Q

development of wings

A

(1) insects
(2) pterosaurs
(3) bats
(4) birds