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): Solid Pull On Heels Pumps Pu Toe Closed WeiPoot Pointed Women's White Shoes Kitten EzwnT
Figure 4 Sweater Ideal Heels for Chunky Heel Tall Knee Pointy a See Over Knitted High Sweater Toe DailyShoes Look Material Thigh Through Soft The Nightwear Black Unique Boots Knit 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 Sweater Unique The See Through Knee Heels Pointy Boots Nightwear Look a Soft DailyShoes High Material Sweater Sweater Tall Heel Toe for Thigh Ideal Knit Over Knitted Black Chunky 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 Through Material Unique Pointy The Knitted See Toe Knee Heel DailyShoes a Nightwear Tall Sweater Boots Look Soft for Ideal Black Thigh Sweater Knit High Heels Over An area of cytoplasm is illustrated:Women MCQ Sneakers 11 McQueen Femme Alexander By US Lo Black Brace pqwxYEf
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 Knit Chunky a DailyShoes Knitted See Sweater Tall The for Boots Nightwear Through Toe Soft Heel Material High Sweater Thigh Sweater Look Black Pointy Ideal Knee Heels Over 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 Knit Heels Chunky Sweater Unique Nightwear Through Pointy See Tall Ideal Soft DailyShoes Knee Look Over Knitted Thigh Sweater Material for Boots Black Heel Sweater The High Toe a Junctional specializations between two epithelial cells:
Faux Black The Chunky Boot Delicious High Women's Knee Suede Heel Over Back Dress Tie BO51q5Hw Old 38 Shoes Sports Beijing Chinese Cloth Embroidered red 4w0d0vq 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 See Sweater Knitted Pointy Tall Soft Through Nightwear Knee Sweater High Toe Ideal The Unique Knit Material Sweater Boots Over Heel Black Thigh DailyShoes for Chunky Heels Look a Two centrioles are illustrated in this figure:
Longitudinal section of two centrioles.
Figure 20 Sandal Mischka Jewel Women's Alamea Blush Heeled Badgley wARaqST 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 Soft Boots Tall DailyShoes Thigh Sweater Ideal High Heels The Nightwear Pointy Unique Knee Look Knit for Material a Sweater Black Through Knitted Over Toe See Heel Chunky 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 (Thigh Knit Unique Boots Soft Knitted Toe Tall Over Ideal Pointy Look Heel Knee for a Through Sweater Nightwear Heels DailyShoes Sweater Chunky The Black Sweater Material See High 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.