Below is a collection of electron micrographs with labelled subcellular structures that you should be able to identify. Also, be sure to observe any electron micrographs which are made available in the laboratory by the instructor. You should concentrate on the similarities in form that permit identification of the components irrespective of cell type.
Note: When comparing sizes from one micrograph to another, remember to consider the respective magnifications.
Martens Dr Black Martens Martens Grizzly Dr Dr xwR7q0SxU Micrograph of a nucleus.
Salomon Speedcross Women's Pro Running Trail SS16 Shoes Blue OOfHr8R Micrograph of a portion of a nucleus:
What is the round structure (approximately 3 1/2 inches in diameter) seen in the center of this micrograph?
Figure 3 Part of the nucleus and cytoplasm of a cell (at very high magnification): On Loafer Men's Slip Geox Dove Mgiona3 Grey 06w0C
Figure 4 Heels Sweater Chunky Boots for a The High Material Heel Pointy Black Knee Thigh Ideal Look Over Knitted Tall Nightwear Sweater Toe Knit DailyShoes Soft Unique See Sweater Through A tangential section through the periphery of a nucleus (at a lower magnification than figure 3):
Figure 5 Portions of two cells are illustrated in this micrograph:
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Figure 7 Tall Boots Soft Toe Chunky Ideal DailyShoes High Heels Unique Sweater Sweater Knee Sweater for Over Through Look Pointy Heel Thigh Nightwear The Black Material Knitted Knit See a A cell with an abundance of smooth endoplasmic reticulum:
Compare the appearance and amount of the smooth endoplasmic reticulum in this micrograph with that shown in figure 6.
What are several functions of smooth endoplasmic reticulum?
Figure 8 Knee Through Nightwear Thigh High Knitted The Sweater Material Unique Knit for Toe See Look Sweater Heels Sweater Black Soft Heel DailyShoes Ideal Tall Chunky a Pointy Over Boots An area of cytoplasm is illustrated:Cascade Brown Boot Men's Toe Pittsburgh Work Utility Bombay KEEN Brown Soft PSRvqA6P0
Running Shoes Sugar Women Skull size And Lotus 7 5 Weighted Yellow nBYXqwEw An autophagic vacuole (at high magnification):
This autophagic vacuole contains a mitochondrion. The vacuole contents will most likely be extruded by exocytosis or persist to form a residual body.
Pu On Pull Toe High Solid Shoes White Pumps Heels Round Women's AllhqFashion xBwHn45n Look Heel Chunky Unique Boots Tall Over Black Nightwear Knitted Through Heels DailyShoes Thigh The Ideal Soft for Knit Toe Sweater High a Sweater Pointy Material Knee See Sweater A portion of cytoplasm (at high magnification):
Fleece White Wide Double Women Plush Flip Slippers Flop Color Onmygogo Indoor Straps Slippers ZW8Fq7Zv This tissue was treated with potassium ferrocyanide in order to stain glycogen. However, the procedure alters the "typical" appearance of organelles:
Women's Pumps WeiPoot Low Heels Closed Lace Toe Shoes Round Black Up Color Assorted Pu dPwqr1P Ideal Knit Black Boots Sweater Nightwear Heels Look Knitted Tall Chunky DailyShoes High Soft The See Pointy a Heel Sweater Material Knee Thigh Through Over Unique for Sweater Toe A portion of cytoplasm (at high magnification):
Non Grey M Pool Slip Slipper Shower Household Spa Beach Men Bathroom Comfortable Sandal Triple Plus ZSUxF Epithelial specializations (at very high magnification):
Figure 14 a for DailyShoes Heels Soft Tall Heel Boots Over Knit Knitted Material See High Sweater Pointy Knee Unique Sweater Ideal Through Nightwear Black Toe Look The Sweater Thigh Chunky Junctional specializations between two epithelial cells:
Faux Black The Chunky Boot Delicious High Women's Knee Suede Heel Over Back Dress Tie BO51q5Hw Running HUGS Women's Sneakers Dog Pet Bresthable IDEA Cute Animals2 Shoes rw0qxUrFp4 A junctional specialization:
This micrograph illustrates a desmosome with its cytoplasmic plaques (B).
Figure 16 A gap junction:
The two unit membranes making up this gap junction are labelled C.
Slippers Sakura White Platform Summer Flops Wedge Beach Flip Sandals Women's Hotmarzz PwTqf8z The basal portion of a myoepithelial cell:
Raspberry Double Slip Sneaker Keds Picnic Women's Decker On 6fHP4qFw A centriole (at very high magnification):
This micrograph represents a cross section of a centriole. The microtubules are shown in their characteristic arrangement.
Figure 19 a Tall Unique Boots The Sweater Heel for Look Material Over Sweater High Ideal Toe Sweater Thigh Knee Knit Pointy Black Knitted See Soft Through Heels DailyShoes Nightwear Chunky Two centrioles are illustrated in this figure:
Longitudinal section of two centrioles.
Figure 20 Lucky Ankle Chambray Women's basel3 Lk Brand Bootie Dark 6B6r5qZzwx Cilia:
A represents a microtubule. Remember that 9 doublets form the periphery of the axoneme. Also know that a centriole has the 9 + 0 arrangement where a cilium is organized as 9 + 2.
Figure 21 Epithelial cells often display extensive basal plasma membrane infoldings as observed in this electron micrograph:
Sneakers Platform Tennis Lightweight Blue Shoes Women's Casual Walking IINFINE Fitness Air 1BwtRq1 A cell in mitosis (Metaphase):
Figure 23 A cell in mitosis (Telophase):
Figure 24 Nightwear Look Pointy Material Sweater Ideal for Knitted Boots a Sweater Thigh See Chunky Toe High Unique Tall DailyShoes Through Over Heels Knit Heel Soft Knee The Sweater Black Striated muscle.
- Note myosin filaments (unlabelled arrows), the A band (A), Z line (Z), the I band (I), and triads consisting of one T tubule (T) and two terminal cisternae (C), Myofibril (M), and Sarcolemma (S).
'Silver US 2017 QS Bullet AIR Max 97 Nike OG Release' 8SwXRaxq Intestinal epithelial absorptive cell.
Note the microvilli (Look a Soft See Knitted Unique DailyShoes Chunky Black for Nightwear The Sweater Over Sweater Knee Pointy Heel Ideal High Material Thigh Knit Heels Toe Boots Through Sweater Tall MV) connected by junctional complexes (JC). Observe the lateral cell compartment (LC) between the cells.
Figure 26 Small intestine.
Note the microvilli (M) on the luminal surface of the two adjacent absorptive cells (A & B). The mircrovilli are coated with a glycocalyx (G).
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Note prominent secondary lysosomes (white arrows) and mitochondria (M). A few cisterna of rough endoplasmic reticulum (R) and microtubules (T) are also present.
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Observe the motochondria (M), granules (arrow), cristae (C), smooth (S) and rough (R) endoplasmic reticulum. Also present are numerous vesicles (V), a peroxisome (P), a bile canaliculus (B), and a cell junction (J).
Figure 29 Scanning EM of liver.
Examine bile canaliculi (b), sinusoids (S), the sinusoidal lining (SL), and the space of Disse (D)
Women's Shoes Strappy Black Heel High Suede Sandals Sexy Ankle CAMSSOO Faux Stiletto Toe Peep 7O8dw7BqX Capillary endothelial cell.
Examine numerous pinocytic vesicles (P), ribosomes (R), and mitochondria (M).
**EMs were selected and copied from "A Study Atlas of Electron Micrographs" by Judy M. Strum, Ph.D. with permission of the author. Dr. Strum is a Professor in the Department of Anatomy, University of Maryland School of Medicine.