Two sperm entering egg cell...must be twins on the way...!
Capillary network in skeletal or striated muscle. The many loops allow the capillaries to change their length in response to changes in the length of muscle fibers during contraction relaxation. Dr. Richard Kessel Dr. Randy Kardon/Tissues Organs/Visuals Unlimited, Inc.
Collagen fibres. Coloured scanning electron micrograph (SEM) of collagen from the dermis of the skin. Collagen is a protein with a high tensile strength.
Kidney cortex, showing numerous glomeruli with their afferent and efferent arterioles and the peritubular capillary complexes.
Tongue showing taste bud, filiform papillae and fungiform papillae. SEM.
Phagocytosis. Coloured scanning electron micrograph of a polymorphonuclear white blood cell or leucocyte, attacking Bacillus cereus bacteria. The leucocyte (orange), part of the body's immune system, is attaching to and engulfing the Bacillus cells (blue, rod- shaped). It uses enzymes to digest the bacteria. This process of engulfment and digestion is known as phagocytosis. Highly mobile, phagocytic cells migrate to areas of tissue damage.
Capillaries in lung. Capillaries surround the individual alveoli ,air sacs, allowing for the exchange of oxygen and carbon dioxide between the capillaries and the alveoli. Mammal **On Page Credit Required** - SEM X415 3.5" X 6.5" Filename: 900022.jpg Photographer: Richard Kessel Source: Visuals Unlimited, Inc. Date 2 Mar 2011
Stomach lining, SEM
Inner ear hair cells. Coloured scanning electron micrograph (SEM) of sensory hair cells from the organ of Corti, in the cochlea of a mammalian inner ear. Each V-shaped arrangement of hairs lies on the top of a single cell.