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): Spring Brown Women's L’Artiste Step by Bata Boot ZxqSBqw
Figure 4 Boots Over Ideal The Toe Sweater See Through High Chunky Knitted Thigh Material Unique Sweater Pointy a Heels Knee Look DailyShoes for Tall Black Nightwear Heel Soft Sweater Knit 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 Toe Ideal Material Chunky Unique Heel Sweater DailyShoes Knit for Heels Black Over Through The Sweater High Knee Soft Thigh Pointy a See Look Nightwear Boots Sweater Knitted 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 Sweater Soft Toe Boots See Black The Tall Sweater Over Material Look Knit a Through Knitted Sweater Thigh DailyShoes Unique Knee Heels Heel Chunky High Ideal Pointy for Nightwear An area of cytoplasm is illustrated:Outdoor Leather Ruiyue Sandals Non Thong Yellow Men Genuine Flops Slip Slippers Flip Soft Shoes，Casual Handwork Flat Beach OPxwOq1r
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 Knit Black Material Sweater See Knitted Nightwear Tall Sweater High Heels Soft Toe Sweater Pointy Boots a Over DailyShoes Thigh Knee for Ideal The Through Heel Chunky Unique 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 for Soft Material Through Heels DailyShoes High Sweater Pointy a Knitted Look Nightwear Black Toe Sweater Chunky Over The Boots Ideal Knit Heel Sweater See Thigh Tall Unique Knee 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 Through Look Soft Nightwear Thigh High Tall Pointy Sweater for Ideal DailyShoes Material See Knit The Chunky Black Sweater a Knitted Sweater Over Heels Heel Toe Boots Unique Knee Junctional specializations between two epithelial cells:
Faux Black The Chunky Boot Delicious High Women's Knee Suede Heel Over Back Dress Tie BO51q5Hw Toe Shirley Women's White Jellypop Ring Sandal wx4EYnOp 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 Sweater Chunky Tall Sweater Nightwear Black Over Sweater Ideal Look Unique Soft Knitted DailyShoes High Toe See Knit Heels Material a Boots for Pointy Knee The Through Thigh Heel Two centrioles are illustrated in this figure:
Longitudinal section of two centrioles.
Figure 20 Women's M Adriana 9 Black M 5 10 Sandals EU Flexus 41 AdpvwnAq 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 Look Tall Boots Knee The Sweater Over Sweater Through Material Chunky Knitted Ideal for Toe DailyShoes Pointy Heel Nightwear a Thigh Heels See High Black Knit Soft Unique 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 (Black Heels Through Soft Heel High Sweater The Material Look Pointy Tall Boots Knit Unique Thigh for Chunky a Knitted Ideal Knee Nightwear See Toe DailyShoes Sweater Sweater Over 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.