Skip To Main Content (Press Enter).
CHAPTER 19 - FEMALE REPRODUCTIVE SYSTEM
Histology Guide
application menu
  • HOME
  • ELECTRON MICROSCOPY
  • CHAPTER 18 - FEMALE REPRODUCTIVE SYSTEM
  • INDEX
  • SEARCH
  • TERMS OF USE
  • HELP

MICROGRAPH

NAME
EM 326 Oocyte
TISSUE
Ovum
IMAGE SIZE
7,818 x 4,545 pixels
107 MB
FILE SIZES
6,723 KB (grayscale)
8,775 KB (color)
MAGNIFICATION
2.000x
PIXEL SIZE
0.02561 nm
SOURCE
David M. Phillips
The Population Council
Rockefeller University
New York, NY

SETTINGS

Version 8.0


Display mode

Viewer options


Move Between WayPoints:



Description

Font size

CONTACT US

Questions or comments should be sent to
tcbrelje@gmail.com

This web site is owned and operated by:

T. Clark Brelje, Ph.D.

Faculty/Retired
University of Minnesota
Department of Genetics, Cell Biology and Development
6-160 Jackson Hall
321 Church St SE
Minneapolis, MN 55455

Robert L. Sorenson, Ph.D.

Professor Emeritus
University of Minnesota
Department of Genetics, Cell Biology and Development
6-160 Jackson Hall
321 Church St SE
Minneapolis, MN 55455

See Terms of Use for more information.

HELP

See HELP for more extensive information.

Get the User Guide v1.1 to discover new features that can enhance your use of this platform.

Each slide is shown with additional information to its right. The image can be changed using any combination of the following commands.

Sidebar

  • Links: Click to navigate to a specific region
  • Images: Click to show this view
  • Toolbar: Use controls to adjust magnification and pan the image

Mouse

  • Zoom In: Click left button
  • Zoom Out: Double-click left button
  • Pan/Move: Click and drag the image

Keyboard

  • Zoom In: ‘A’ key
  • Zoom Out: ‘Z’ key
  • Pan/Move: Arrow keys (Up, Down, Left, Right)
  • Reset View: ESC key (fit-to-screen view)

Touch

  • Tap: Zoom in on a specific area
  • Double-tap: Zoom out from the current view
  • Drag: Pan the image

SHARE

A link to a micrograph can be saved for later viewing in different ways.

Clipboard

The address of this view has been copied to your clipboard. This link can be pasted in any other program.

Bookmark

A bookmark link can be created using the bookmark function (Ctrl-D for Windows or Cmd-D for Mac) of your browser. Choose a name for the bookmark and select the folder in which you want it saved.

EM 326 Oocyte

Fertilization

Scanning electron microscopy (SEM) shows the in vitro fertilization of an oocyte. The process of fusion of the spermatozoon has already begun.

Fertilization involves a sperm fusing with an oocyte. In mammals, the sperm head is engulfed by microvilli on the surface of the oocyte.

  • Oocyte (blue) - fertilization triggers the oocyte to complete meiosis II forming a mature ovum.
    • The zona pellucida has been removed from this isolated oocyte
  • Spermatozoon (yellow) - in mammals, the lateral surface of the sperm head fuses with the surface of the oocyte.

The nuclei of the oocyte and sperm merge to form a diploid zygote, which contains a complete set of chromosomes combining genetic material from both parents.

Courtesy of David M. Phillips, The Population Council, Rockefeller University, New York, NY.

© 2005-2026. T. Clark Brelje and Robert L. Sorenson