LAB EXAM

what is spongin

protein fibers that form the skeleton of certain sponges

what are choanocytes

flagellated collar cells to create movement within water

what is the choanocyte layer

a layer of choanocytes found at the outermost layer of a sponge that creates a flow of water and capture food items

what is mesohyl

gelatinous layer found between the outer layer and the feeding chambers of a sponge. acts as an endoskeleton and maintains the shape of a sponge.

what is ostia

tiny pores that allow water into the sponge

what is the radial canal

canals lined by choanocytes that allow water into the sponge

what are spongocoel

internal, central cavity that passes water to reach the osculum

what is the osculum

single large opening at the top of the spongocoel

spongin - 100x

what is this?

grantia cross section 100x

what is A?

mesohyal

what is B?

spongocoel

what is C?

choanocyte layer

what is D?

ostia

what is E?

radial canal

what is this?

grantia longitudinal section

what is A?

osculum

what is B?

radial canal

what is C?

incurrent canal

what is D?

incurrent pores

what is the epidermis

outer layer of skin for protection

what is the gastrodermis

a lining found inside the stomach that carries out digestive and metabolic processes

what is the gastrovascular cavity

digestive chamber with a single opening, acts as a mouth and anus, has tentacles surrounding it, carries out digestive and circulation processes

what is the mesoglea

jellylike layer that lies between gastroderm and epidermis and acts like a skeleton that supports the organism

what is the base of cnidarians

a structure that helps hydras attach to a surface

what is a cnidocyte

stinging cell on tentacles that acts as a defensive mechanism and catches prey

what is a tentacle

anatomical structures that fulfill protective, sensory, and secretory roles

what is aurelia

the genus of scyphozoan (true) jellyfish

what is a planula

the first larval stage of an aurelia formed from a zygote; bilaterally symmetrical

what are the green things that surround the planula

cilia; slender hair-like structures that help the planula move

what will a planula become

scyphistoma

what is a scyphistoma

polyp form of an aurelia

what will a scyphistoma become

a mature polyp (strobila) and then an ephyra

what are rhopalium

sensory organs for sensing light and movement

what is the adradial canal

canals that disperse food

what is the gastric filament of cnidarian

a filament of nematocysts that kill living prey that enter the stomach

what is the manubrium

bearing mouth that reaches for food

what is the stomach

organ that carries out extracellular (outside of cells) digestion

what is this?

hydra longitudinal section

what is A?

gastrovascular cavity

what is B?

mesoglea

what is C?

base

what is D?

gastrodermis

what is E?

epidermis

what is F?

tentacle

what is G?

cyindocyte

what is this?

hydra cross section

what is A?

epidermis

what is B?

gastrodermis

what is C?

gastrovascular cavity

what is D?

mesoglea

what is the anterior side

front/head

what is the posterior side

back

what are anterior gastrovascular branches

highly branched canals that circulate nutrients to cells and is considered the primary organ for digestion, found near the front of the body

what are the lateral gastrovascular branches

highly branched canals that circulate nutrients to every cell and act as the primary organ for digestion, found farther away from the body's center

what is the mouth

structure found in the central underside of body that sucks food into the gut, opening into the pharynx

what are auricles

sensory organs for touch and smell projected on both sides of the head

what is the pharynx

complex organ that contains multiple tissues that include neurons, muscle cells, epithelial cells, and secretory cells. It serves as an entrance and exit for the digestive system.

what is the head

triangular, arrowhead structure that contains eyespots. Its head is one of the animal's most identifiable organs

what is the pharyngeal pouch

epithelial structure part of the pharynx that is connected to the mouth.

what ist he pharyngeal cavity

an organ in planaria flatworms that carries the pharynx. the cavity goes to the digestive cavity, further branching into the body.

what is the gastrovascular cavity

The gastrovascular cavity is a digestive structure in flatworms that distributes nutrients throughout the body.

what is cilia

hair-like structures that grow on the surface of certain organs and allow the flatworm to propel across a carpet of mucus.

what is this?

planaria longitudinal section

what is A?

auricles

what is B?

pharynx

what is C?

mouth

what is D?

lateral gastrovascular branches

what is E?

pharyngeal pouch

what is F?

anterior gastrovascular branches

what is G?

head

what is this?

planaria cross section

what is A?

mesoderm

what is B?

gastrovascular cavity

what is C?

ectoderm

what is D?

cilia

what is E?

pharynx

what is F?

pharyngeal cavity

what is G?

gastrovascular cavity

what is H?

endoderm

what is the anus

a structure that expels waste.

what is the genital pore

pore that allows fertilized eggs to enter and exit the body.

what is the intestine

an organ responsible for nutrient digestion and absorption.

what is the lateral line

a canal that assists in the excretion of wastes.

what are the lips

an external physical boundary of the oral cavity.

what are the ovaries

structures that produces eggs through oogenesis.

what is the pharynx

a pump that crushes food before it passes on into the intestine.

what is the uterus

an organ that stores eggs.

what is the vagina

a reproductive organ that receives sperm and directs eggs through the genital pore.

what worm is the ascaris

parasitic nematode that generally infects pigs

what is this?

ascaris/roundworm

what is A?

oviduct

what is B?

ovary

what is C?

uterus

what is D?

intestine

what is E?

vagina

what is F?

lips

what is G?

mouth

what is H?

pharynx

what is I?

intestine