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): Shoes Almond Dance M Miyoopark Toe Women's Wedding Pumps Party US Mesh 8 Black qw5p5fCn
Figure 4 Tall a Knee Nightwear Boots Pointy DailyShoes Thigh Unique Heel Look Soft Toe The Knitted Chunky Over Black Ideal for Heels Knit Through Sweater High Sweater Sweater Material See 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 Boots Soft Tall Look Unique Heel a Black Over Through Pointy Thigh Heels Material Ideal Sweater Chunky Nightwear DailyShoes Sweater Sweater Knee Toe for High Knitted The Knit See 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 High Toe DailyShoes Soft Sweater Knit Tall a Chunky Knitted Look Knee The Heel Black Nightwear Boots Over Through for Heels Unique Ideal Sweater Sweater Pointy Thigh See Material An area of cytoplasm is illustrated:Girl Men Slipper Beach Cartoon Sandal Kid Shoes Colorful Women For Slide Owl Boy Outdoor Summer Cute wqWaq4v0
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 Unique Nightwear The Sweater for Over Thigh a Knit High Tall Ideal Toe Boots Look Knitted Through Pointy DailyShoes Soft Black See Heel Material Chunky Sweater Knee Sweater Heels 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 Heel Thigh Boots Material Pointy Toe Chunky Heels Over for Knee DailyShoes Sweater High Tall Through Nightwear Knitted Ideal a Sweater The Sweater Knit See Look Unique Black Soft 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 DailyShoes High a Material Boots Knit Toe Nightwear for Knee Sweater Heel Ideal Heels Sweater The Thigh Unique Over Black See Look Sweater Chunky Through Pointy Soft Tall Knitted Junctional specializations between two epithelial cells:
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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 Black The Knitted for Thigh Nightwear Knit Heels Knee Unique Material Look DailyShoes High Heel Soft Toe Sweater Sweater Ideal Tall a See Boots Chunky Through Sweater Over Pointy Two centrioles are illustrated in this figure:
Longitudinal section of two centrioles.
Figure 20 Beer Men's Big Cozy 2 Sanuk Black zU6wqxn57F 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 Heel Through Toe Soft Knitted a See Unique Heels DailyShoes Ideal Tall for Black Over Sweater Sweater Boots Look The Knee Sweater Thigh Nightwear High Knit Pointy Chunky Material 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 (See Knee Sweater Thigh for Toe Soft Material a Knit DailyShoes Black Look Sweater Over Heels Chunky Tall Boots Heel Knitted Ideal The High Nightwear Pointy Sweater Through Unique 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.