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Karlin, John Elias

(Encyclopedia) Karlin, John Elias, American industrial psychologist and human-factors engineering pioneer, b. Johannesburg, South Africa, grad. Univ. of Cape Town (B.A., M.A.), Univ. of Chicago (Ph.D…

Blood Types

Not all blood is the same Human blood is grouped into four types: A, B, AB, and O. Each letter refers to a kind of antigen, or protein, on the surface of red blood cells. For example, the surface…

100 Years Young

Centenarians have the last word According to the U.S. Census Bureau, there were 37,306 centenarians in 1990. As advancements in technology and medical research have skyrocketed, so have life…

Anatomy and
Physiology

Anatomy and PhysiologyAnatomy and Physiologych01s01 bonesch01s02 parts-bonech01s03 thats-long-short-itch01s04 more-things-changech01s05 now-with-self-repairing-optionch02s01 jointsch02s02 types-…

Anatomy and
Physiology: Acting in Concert

Acting in ConcertAnatomy and PhysiologyThe MusclesActing in ConcertFibers Every Which Way With almost 700 muscles, both superficial and deep, it makes sense that some of them might work together…

Anatomy and
Physiology: Anatomy of the Heart

Anatomy of the HeartAnatomy and PhysiologyThe HeartAnatomy of the HeartThe Four ChambersThe Heart's Own BloodECG: Measuring a Beat The four-chambered heart is the result of millions of years of…

Anatomy and
Physiology: Blood Types and Genetics

Blood Types and GeneticsAnatomy and PhysiologyThe Circulatory SystemCells, Bells!Blood Types and GeneticsNow I Know My WBCs Crash Cart Not all of genetics is so simple. Although some traits (…

Anatomy and
Physiology: Can You Hear Me Now?

Can You Hear Me Now?Anatomy and PhysiologyThe SensesWindows to the SoulCan You Hear Me Now?The Nose KnowsDon't Be So Touchy! There is an elegant, mechanical simplicity to sound. Sound is…