Chapter 28.1, Problem 3MI

Summary Introduction

To write:

The correct term of the following definition.

Introduction:

All the higher animals have a well-developed organ system which perform a specific function in the body.

Explanation of Solution

Lateral line systemreceptors that enable fishes to detect movement in the water and help keep them upright and balanced.

Spawningexternal fertilization in which male and female fishes release their gametes near each other in the water.

Ventriclechamber of the heart that pumps blood to the gills.

Neural crestin vertebrates, group of cells that develop from the nerve cord and contribute to the development of other important features.

Atriumchamber of the heart that receives blood from the body.

Scalesmall , flat, plate-like structure near the skin surface of most fishes.

Swim bladdergas -filled space in bony fishes that allows a fish to control its depth.

Cartilagetough , flexible material making up the skeletons or parts of skeletons of vertebrates.

Operculummovable flap that covers the gills and protects them.

Nephronfiltering unit within the kidney that helps maintain the salt and water balance of the body and remove cellular waste