Lab 1 (Subphylum Vertebrata) Larval Lamprey

Question 1

oral hood

Answer 1

anterior tip of the mammal that encloses the buccal cavity

Question 2

oral papillae

Answer 2

structures involved in sensory input

also strains and filters particles

Question 3

brain

Answer 3

occupies the anteriormost position and is a component of nerve system

Question 4

eye

Answer 4

non functioanl

Question 5

pharnynx

Answer 5

has gill lamallae in the gill pouches for respiration

filters out food particles and passes them into the esophagus

Question 6

gill pouches

Answer 6

house the gill lamallae for gas exchange

Question 7

notochord

Answer 7

rigidity

Question 8

spinal cord

Answer 8

component of the nervous system and is posterior to the brain

Question 9

intestion

Answer 9

digest food

Question 10

anus

Answer 10

waste

Question 11

subpharyngeal gland

Answer 11

produces the mucous lining of the pharynx to trap particles and also binds and produces idodine compounds

***homologous to the endostyle in urochordates and cephalochordates and also thyroid in higher verts

Question 12

myomeres

Answer 12

muscles for movement

Question 13

hyperpharyngeal ridge

Answer 13

moves food particles from pharynx to the gut