The integumentary system

Would you be enticed by an ad for a coat that is waterproof, stretchable, washable, and permanent-press, that automatically repairs small cuts, rips, and burns? How about one that’s guaranteed to last a lifetime? Sounds too good to be true, but you already have such a coat-your skin. The skin and its derivatives (sweat and oil glands, hairs, and nails) make up a complex set of organs that serves several functions, mostly protective. Together, these organs form the integumentary system.

67p tangtuy07 02-04-2016 51 2   Download

Describe the ways in which toxicants interact with cells. • Recognize how the molecular characteristics of toxicants affect entrance into a cell. • Explain human anatomy as related to integumentary, respiratory and digestive systems. • Summarize the routes of toxicant absorption.

7p nguyenvanquan037 07-01-2011 80 4   Download

Fish are aquatic vertebrates with fins for appendages. They "breathe" by means of gills. Fish make up the largest of the vertebrate groups with over 20,000 species. They can be found in a great variety of lakes, streams, oceans and estuaries. Fish are divided into two groups based on the composition of their skeletons. The sharks, skates and rays are cartilaginous fish. Their skeletons are made of cartilage, the same flexible material in your ear lobes and nose. The majority of fish have skeletons made of bone and are called bony fish....

48p conladuy 16-08-2010 143 30   Download