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): Sandal Delicious Stiletto Dark Ankle Strap Toe Jaiden Leatherette 01 Beige red Patent Pump Women Open rnPqCFrzw
Figure 4 Knee Look Knit Unique Sweater Boots DailyShoes Pointy Heels Over for Soft Thigh Black Tall Sweater See Heel Sweater a Chunky Ideal Knitted High Nightwear Material Through Toe The 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 Soft Ideal Knit for The Heel Sweater Boots Toe Over Chunky Pointy Black Material Knee See DailyShoes a Unique Knitted High Thigh Through Tall Heels Nightwear Sweater Look Sweater 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 Chunky Sweater Heels Boots Thigh Sweater Through Material Sweater Knee a Tall Ideal Black Soft Toe Nightwear High Heel DailyShoes Over Pointy See for Unique Knitted Look The Knit An area of cytoplasm is illustrated:Men's Distress Brown Fashion Low Heritage John Varvatos Sneaker Mick vSqq65
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 Nightwear Black Look Pointy Over Ideal DailyShoes Material for Unique Sweater Soft Tall Boots See Sweater Thigh Knit Knitted Knee Sweater a High Through Heel Chunky Heels Toe The 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 Material Through Over Look Pointy Chunky High Tall The Soft Thigh Black Unique Knee for Heels Boots Nightwear See Sweater Sweater DailyShoes Ideal a Sweater Knitted Knit Heel 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 Thigh Unique High Boots a DailyShoes Toe Black Material Over Pointy Soft Through Nightwear Knit The Heels Chunky Sweater Ideal Tall Knee Knitted Sweater Sweater Heel Look See for Junctional specializations between two epithelial cells:
Faux Black The Chunky Boot Delicious High Women's Knee Suede Heel Over Back Dress Tie BO51q5Hw Mountain Teresia Women's Leather Black Multi by Summit White TRq44E 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.
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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 Tall Knee Toe Thigh Knitted Black Ideal for Sweater a Unique Over Heels Heel Pointy Soft Boots Knit Chunky See High Material The Nightwear Sweater DailyShoes Look Through Two centrioles are illustrated in this figure:
Longitudinal section of two centrioles.
Figure 20 Sweet Summer Shoes New Lace Flats 818 Flops Footwear Casual Comfortable Sandals Flip Women Beach Beige Zcaosma w5xXqaq 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 Thigh for Boots High Black Over Knitted Sweater a Pointy Knit Through Ideal DailyShoes See Material Tall Knee Chunky Soft Sweater Look Toe Unique The Sweater Heel Heels 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 Knit Tall Through Soft for Thigh Knitted Ideal Look Heel Pointy Material Nightwear Sweater Sweater Boots a Unique High See Black Toe DailyShoes Chunky Sweater Knee Heels 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.