Animal - Deuterostome Flashcards Preview

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Flashcards in Animal - Deuterostome Deck (33)
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1

deuterostome

major lineage of bilaterian animals that share embryological development patter
- anus b4 mouth
- large w/ complex bodies

2

echinoderm

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

(ie) sea urchins, sand dollars, sea stars

3

endoskeleton

bony or cartilaginous structures w/in body that provide support

(ie) plates in echinoderms

4

water vascular system

(echinoderms) system of fluid-filled tubes & chambers
- fcn: hydrostatic skeleton

5

tube feet

one of many small, mobile, fluid-filled extensions of water vascular system of echinoderms
- podium, ampula
- used in locomotion, feeding & respiration

6

podium

part extending outside body
- type of tube feet

7

ampula

bulb w/in body
- type of tube feet

8

pharyngeal gill slit

set of parallel openings from throat to outside
- fcn: feeding & gas exchange
- diagnostic trait of chordates

9

nerve cord

(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

notochord

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

vertebrae

cartilaginous or bony elements that form backbones of vertebrae animals

12

cranium

bony, cartilaginous or fibrous case enclosing & protecting vertebrate brain
- forms part of skull
- aka braincase

13

cartilage

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

14

tetrapod

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

(ie) amphibians, mammals, reptiles + bird

15

bone

type of vertebrate connective tissue
- include: living cells + blood vessels

16

amniotic egg

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

17

amnion

membrane-bound water supply in amniotic egg

18

yolk sac

food supplly in amniotic egg

19

allantois

waste sac in amniotic egg

20

gill arches

(aquatic vertebrates) a curved region of tissue btwn gills
- gills are suspended from gill arches

21

albumen

solution of water + protein in amniotic egg
- particularly in albumin
- fcn: nourish growing embryo, pillow for embryo
- aka egg white

22

placenta

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

gestation

period of development inside mother
- implantation to birth
- live birth species

24

parental care

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

lactate

production of milk to feed offspring
- from mammary glands (mammals)

26

endotherm

an animal whose primary source of body that is internally generated

27

mammary gland

specialized exocrine gland that produce & secrete milk for nursing offspring

28

swim bladder

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

29

feathers

specialized skin outgrowth, composed of beta-keratin
- present in all birds & some nonavian dinosaurs
- fcn: flight, insulation, display

30

pentaradial symmetry

5-sided symmetry in adult echinoderm