Lab 8

Question 1

Deuterostomes?

Answer 1

Mouth forms second, anus forms first
radial cleavage
Indeterminate cells

Question 2

Echinodermata?

Answer 2

Sea stars, urchins, cucumbers
five part radial symmetry
calcareous endoskeleton
bilateral symetrry for embryos

Question 3

Water vascular system?

Answer 3

Unique to echinoderms

modified for locomotion

Question 4

Keystone predators?

Answer 4

Sea star

keep populations of smaller organisms like sea urchins and mussels in check

Question 5

Chordata?

Answer 5

Invertebrates and vertebrates

Notochord, dorsal hollow nerve cord, pharyngeal slits, post anal tail

Question 6

Notochord?

Answer 6

longitudinal, endoskeletal rod that gives strength and elasticity to the body.

Question 7

Dorsal Hollow nerve cord?

Answer 7

spinal chord of vertebrates

Question 8

Pharyngeal slits?

Answer 8

Gas exchange

Question 9

Post anal tail

Answer 9

muscular tail extends past anal opening

Question 10

Lancelets?

Answer 10

Suspension feeders that burrow into sediment to feed

Myomeres act against notochord to move it into sediment

Question 11

Oral hood?

Answer 11

lancelet

sorts food particle

Question 12

Atrium?

Answer 12

common chamber where water goes after it accesses pharyngeal slits

Question 13

atriopore?

Answer 13

water is dumped from here

Question 14

Bony fish?

Answer 14

The vertebral column of fish is divided in two regions, the trunk and the tail

Question 15

Axial skeletons?

Answer 15

skull and vertebrate

Question 16

Tetrapods?

Answer 16

cervical, thoracic , lumbar, sacral, caudal

Question 17

cervical?

Answer 17

neck (movement)

Question 18

thoraric?

Answer 18

ribs to protect heart and lungs/ help breathing

Question 19

lumbar?

Answer 19

stregnthen back

Question 20

sacral?

Answer 20

fused to pelvic girdle, muscular attachment points

Question 21

Caudal?

Answer 21

tail vertebrate

Question 22

Homology?

Answer 22

certain characteristics arising from common ancestry

Question 23

analogous?

Answer 23

appear similar but didnt come from common ancestry

Question 24

circ system? (fish)

Answer 24

heart

Question 25

digestive system? (fish)

Answer 25

liver, esophagus, stomach, intestine,

Question 26

urogenital system (fish)

Answer 26

kidneys, bladder, gonad

Question 27

resp system? (fish)

Answer 27

gill chamber

Question 28

resp and circ systems? (rat)

Answer 28

heart, lungs, trachea, bronchi

Question 29

Digestive system? (rat)

Answer 29

Liver, esophagus, stomach, spleen, pancreas, colon, and anus

Question 30

Urogenital system? (rat)

Answer 30

gonad and ducts, kidneys