Fishes

Spine

skull that protects the brain

Fish that have elognated, eel like bodies, and they lack jaws, paird fins, and bone

They have paird fins and jaws. the skeloton is made of cartilage, not bone, and their skin is coverd by a unique kind of scale.

most familiar fishe, that all have jaws, and most have skelotons composed of bone.

their skin is thin and is premeable to gasses and water. Most species lay their eggs in water.

Their skin is dry and scaly.

All have hair and nurse their young with milk.

The skeletal elements that support the pharynx.

A prominent adaptation innearly all fish.

Fertilixation of the egg occures outside the body.

A flexible lightweight material made of cells surrounded by tough fibers of protein.

Small, toothlike spines that feel like sandpapper.

Jut out of the body like the wings on a plane.

Were the information from the nostirals is analyzed.

a gland that removes ecess sodium and chloride ions from the blood and releases them into the rectum for elimination.

Fertilization in wich sperm fuses with the egg inside the females body

A structrue that trasfers sperm in the females body

The material that most fishes skelotns are made of

• Lungs are the internal respritory organs in wich gass is echanged between air and blood.
• Swimm Bladder is a gas filled sac used to controll bouyancy.

What the skelotons of most fish are made of.

Have fleshy fins and are supported by a series of bones.

have fins that are supported by long, segmented. flexibal bony elements called rays.

A hard plate that oppens at the rear and covers and protects the gills.

A fin that extends from the tail

Helps keep the fish upright

Helps the fish move in a straight line

Use them to navigate, stop or move up or down, and even back up

attachment point for the pectoral fins

attchment point for the pelvic points

Food goes through the esophagus to the stomach

Secreets acid and digestive enzymes that begins to break down food.

Were the nutriens are absorbed

Located next to the stomach and secreets bile

Helps breakdown fats

Stores bile and releases it into the intestine

Secreats digestive enzymes into the intestine

undigested material is eliminated

Thin walled vessels in the gills

the heart pumps blood through this

Deoxygenated blood from the bodie empties into a collecting chamber

speeds up the movment of the blood

Main pumping chamber of the heart

contains valves the prvent blood from flowing back into the ventrical

Allows more oxygen to flow through the gills

contains amonia ions such as chloride and sodium and water

Were it is stored and later expelled

Major snsory organs that are conected to the brain

Intregate sensory and other types of information from other ares of the brain

recievs and procces information such as visual and auditory

the most posterior division of the brain

Helps cordinate motor output

conect the spunal chord to internal organs

Reproductive stage