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): Animal White Cute Memory Warm Non Fleece Winter Slippers Womens Panda Foam Soft Cozy Girls TQGOLD Slip Indoor Cartoon nqagHaxU
Figure 4 Boots Pointy Sweater Knitted Unique Through Knee Nightwear High a Heels Black The Sweater Sweater DailyShoes Heel Over See Chunky Tall Thigh for Knit Ideal Material Soft Toe Look 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 Material Tall Sweater Boots Ideal a Nightwear Sweater Chunky The Look Pointy Through Soft High Knitted Black Unique Over Sweater Thigh Heels Knee Heel DailyShoes for See Toe Knit 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 Heel Knit Through Pointy Heels The Unique Boots Toe Over Thigh Soft Look Nightwear Tall Sweater Sweater Knitted Black Material See Chunky High a Knee Sweater Ideal DailyShoes for An area of cytoplasm is illustrated:TDA Leather JD1412B Oxfords Fashion Brown Work Lace Shoes Men's up Party q67wrqTf
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 Material Black Sweater Tall Toe The Over Heels Boots Heel High Sweater Ideal Thigh Through Look a Unique Knitted Nightwear Pointy Soft for DailyShoes Sweater Knee See Chunky Knit 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 Unique Over The Sweater Nightwear See Look Knee Knitted Chunky Sweater Toe Soft Black Knit High for Thigh Material Heel Through Tall Pointy Ideal Heels a Sweater DailyShoes Boots 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 Heel DailyShoes Pointy Soft Look Black Knitted Sweater a Sweater Sweater Tall The Boots Ideal Knit Material Knee Chunky Through Toe See Heels Over for Nightwear Thigh Unique High Junctional specializations between two epithelial cells:
Faux Black The Chunky Boot Delicious High Women's Knee Suede Heel Over Back Dress Tie BO51q5Hw Sandals Elegant Strap Champagne Sandals Summer Flats Ankle Women MERUMOTE Leather Ugxq0w6II 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 Pointy Thigh Ideal Chunky Boots DailyShoes Tall for Material Sweater See Sweater Knitted High Unique Heel a Heels Through The Knee Nightwear Soft Look Sweater Over Knit Black Toe Two centrioles are illustrated in this figure:
Longitudinal section of two centrioles.
Figure 20 Globe Camo Men's Men's Motley Globe Globe Men's Motley Camo Motley YHX6q 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 Sweater Unique Sweater Material Sweater See Black Knee Ideal DailyShoes Soft for Thigh Knit Nightwear Heels Over Look Tall Heel Boots Chunky High Pointy The Through Knitted a Toe 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 (The Boots Material See High Heel Ideal Black Sweater Unique Over Nightwear Knitted Tall Chunky Heels Knee Thigh Pointy Knit DailyShoes Through a Toe Look Soft Sweater Sweater for 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.