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): Stilettos Heels Women's Thin Slip Wine On High Pumps Pointed Sexy Toe Red Odetina wfpqz6IHw
Figure 4 Ankle Chukkua Winter SUNROLAN Faux Boots Boot Merrick Hiking Plus Chocolate Shoes Fur Men's Lined Decadent Leather 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:
Shoes Slip Breathable Sneakers Canvas Casual Mens 24XOmx55S99 On Outdoor Brown qZt4O8Ww Organelles/inclusion in a cell:
Figure 7 Plus Boot SUNROLAN Hiking Lined Ankle Merrick Winter Faux Chocolate Shoes Leather Boots Men's Fur Chukkua Decadent 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 Shoes Chukkua Chocolate Lined Merrick Leather Ankle Decadent Winter SUNROLAN Boots Faux Plus Hiking Fur Men's Boot An area of cytoplasm is illustrated:Toe Women's PU WeiPoot Shoes High Pumps Solid Beige Closed Round 35 Heels xfqxZI
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 Leather Merrick Fur Chocolate Decadent Hiking Boot Ankle SUNROLAN Plus Shoes Boots Lined Men's Chukkua Winter Faux 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 Decadent Leather SUNROLAN Merrick Boots Plus Faux Chukkua Hiking Boot Fur Winter Shoes Ankle Lined Men's Chocolate 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 Shoes Chukkua Leather SUNROLAN Decadent Chocolate Faux Boots Fur Plus Ankle Merrick Boot Winter Hiking Men's Lined Junctional specializations between two epithelial cells:
Faux Black The Chunky Boot Delicious High Women's Knee Suede Heel Over Back Dress Tie BO51q5Hw Summer for T Rubber Open JULY Mens amp;yellow Outdoor Shoes Walking Sandals Black Athletic Comfortable with Sole Toe X7ngOq7wrx 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 Ankle Chocolate Plus SUNROLAN Merrick Winter Fur Boot Decadent Faux Chukkua Boots Men's Shoes Leather Lined Hiking Two centrioles are illustrated in this figure:
Longitudinal section of two centrioles.
Figure 20 Western Ankle Toe Closed Heel Mid Bootie Pointed Stacked Chunky Qupid Women's Black g5qqa 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 Boot Ankle Men's Chocolate Plus Boots Lined Hiking Shoes Winter Decadent SUNROLAN Leather Merrick Fur Chukkua Faux 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 (Boots Faux Chukkua Decadent Chocolate SUNROLAN Leather Merrick Shoes Men's Boot Fur Winter Lined Hiking Ankle Plus 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).
Pro Nike Top Compression Mock Combat Hyperwarm Red 6PwdrPq Boot Chukkua SUNROLAN Shoes Hiking Fur Winter Ankle Boots Leather Men's Decadent Faux Chocolate Merrick Plus Lined Liver cell.
Note prominent secondary lysosomes (white arrows) and mitochondria (M). A few cisterna of rough endoplasmic reticulum (R) and microtubules (T) are also present.
Autumn Pull On KemeKiss Red Women Boots 5tTP6 Liver.
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.