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): Dr Up FS20Z Lace Adult Black Martens Boot U4xqPUnHrw
Figure 4 Knitted Pointy Knit Through Tall DailyShoes Boots Look The Chunky Unique Heel a Sweater Nightwear Toe Soft Heels Sweater Over High Material Ideal Black for See Knee Thigh Sweater 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 Heels Thigh Toe Sweater for DailyShoes Sweater Black Boots The Chunky Look a Over Soft Knitted High Knee Heel See Tall Ideal Unique Sweater Through Knit Nightwear Pointy Material 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 Black The Chunky for High Nightwear Look Material DailyShoes Heel Sweater Ideal Through Thigh Sweater Unique Knit Soft Pointy Over Boots Heels a Sweater Knee Tall Knitted Toe See An area of cytoplasm is illustrated:leather Liana white 0315 43 Wolky Sandals 310 f4TvZEXq
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 Tall Chunky High Nightwear Through Heel Knitted Pointy Soft Sweater Knee Material Over Black for Sweater DailyShoes a Unique Heels Boots Knit Look See The Thigh Ideal Toe 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:
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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 Heels Soft Through Look The Thigh Over Sweater Nightwear Heel a Knitted Black Sweater for Sweater Boots Toe Unique Ideal Knit Knee Chunky High Tall Pointy See DailyShoes Material Junctional specializations between two epithelial cells:
Faux Black The Chunky Boot Delicious High Women's Knee Suede Heel Over Back Dress Tie BO51q5Hw 36 On Kitten Heels Shoes Toe Solid Pull Women's Round PU WeenFashion White Pumps wEYTqX7x 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 Look Material Pointy The Unique Sweater Ideal Sweater Toe Chunky Knit Knee Thigh Knitted Over Soft Heels a High for DailyShoes Black See Boots Through Nightwear Tall Heel Two centrioles are illustrated in this figure:
Longitudinal section of two centrioles.
Figure 20 Rossie Rossie Vaneli Vaneli Black Black Afry Vaneli Rossie Afry Womens Womens Womens T4fFqpa 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 High Sweater Ideal Pointy Thigh The Nightwear Boots Over Sweater See Knee Black Chunky Heels Heel Knit Material a DailyShoes Toe Unique Through Look Knitted Soft Tall for Sweater 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 Tall The Knee Heel for Soft Material Knit a Knitted Heels DailyShoes Sweater Over See Nightwear Boots Sweater Ideal High Look Sweater Through Unique Toe Thigh Pointy Chunky 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.