Differentiate among LM, TEM, and SEM

What will be an ideal response?


A light microscope (LM) passes visible light through a thin section of tissue. A transmission electron microscope (TEM) uses magnets to direct a beam of electrons through a finely sectioned object. A scanning electron microscope (SEM) creates a three-dimensional image by first coating a surface with electron-dense material, then bombarding it with electron beams.

Anatomy & Physiology

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Placental functions are concentrated in a disc-shaped area in the endometrium called the

A) trophoblast. B) allantois. C) capsular decidua. D) basal decidua. E) parietal decidua.

Anatomy & Physiology

The breakdown of starch by digestive enzymes into glucose molecules is a(n) ________ reaction.

A. exchange B. reduction C. anabolic D. synthesis E. decomposition

Anatomy & Physiology

If a red blood cell is placed in a hypotonic solution,

A. the cell will shrink. B. only permeable substances will leave; but concentrations in the cell do not change. C. the cell will swell and may eventually burst. D. the cell will remain the same size and shape.

Anatomy & Physiology

A slower-than-normal heart rate is called

A) tachycardia. B) bradycardia. C) hypercardia. D) hypocardia. E) procardia.

Anatomy & Physiology