Objects

All labeled objects are listed alphabetically. Click the appropriate letter below and then on an object name...

Object names starting with "A":

Object Name	# of Images	Description
A band	3	In striated muscle the A (anisotropic) band is the band formed by overlapping thin and thick filaments. Appears dark in LM and TEM.
A vortex of spermatozoa	1	Movement of spermatozoa down the seminiferous tubule creates a vortex.
Acidophils	2	Cells of the adenohypophysis synthesizing and releasing either prolactin or growth hormone.
Acinar cell	1	Individual cell of a multicellular gland.
Acinus	1	A mulberry-shaped secretory unit formed by a group of exocrine glandular cells.
Acoustic nerve	1	Contains axons coming from the spiral ganglion of the cochlea.
Acrosome	1	Cap over a sperm nucleus. Formed by the Golgi complex. Rich in enzymes.
Acrosomes	4	Caps over sperm nuclei. Formed by the Golgi complex. Rich in enzymes.
Actin filament	1	The thin filament of muscle. Most cells contain actin.
Actin filament anchors	2	Actin filaments extending from the microvilli to the cytoplasm.
Actin filaments	4	The thin filaments of muscle. Most cells contain actin.
Actin filaments c.s.	1	Cross-section of actin (thin) filaments.
Active alveoli	2	Glandular units in lactating mammary gland
Active pinealocytes	2	Large pinealocytes.
Adenohypophysis	4	Anterior lobe of the pituitary gland. Produces trophic hormones.
Adipocyte nuclei	1	Nuclei of fat cells. Often only the nucleus is visible because the cytoplasmic ring is so thin.
Adipocytes	29	Cells active in the synthesis and storage of triglycerides, and in the release of fatty acids and glycerol.
Adipose tissue	1	Composed of adipocytes. Storage site for triglycerides. Can function as a cushion. Provides insulation.
Adrenal capsule	2	Connective tissue covering adrenal gland.
Adrenal cortex	2	Outer layers of the adrenal gland.
Adrenal medulla	4	Innermost part of the adrenal gland.
Adventitia	15	Outermost layer of blood vessels.
Adventitia (cardiac muscle)	2	Adventitia in pulmonary veins and venae cavae (near the heart) is composed of cardiac muscle.
Afferent synaptic endings	1	In this case, synaptic endings of spiral ganglion cells.
Aging corpus luteum	2	This corpus is past its prime. Only a few active cells remain.
Air-blood barrier	1	In the lung. Composed of type I epithelial cells, endothelial cells, and their combined basal lamina.
Air-blood barriers	1	In the lung. Composed of type I epithelial cells, endothelial cells, and their combined basal lamina.
Alveolar duct	2	The most distal portion of the conduction tree in the lung.
Alveolar duct (partial)	1	The most distal portion of the conduction tree in the lung.
Alveolar duct lumen	1	Lumen of the most distal portion of the conduction tree in the lung.
Alveolar duct lumina	1	Lumina of the most distal portions of the conduction tree in the lung.
Alveolar ducts	1	The most distal portions of the conduction tree in the lung
Alveolar lumina	3	Lumina of the respiratory portion of the lung.
Alveoli	3	Respiratory portions of the lung active in gas exchange.
Ameloblast (enameloblast) layer	1	Cell layer producing enamel in the developing tooth.
Ampulla	2	Contains specialized sensory receptor cells for sensing angular acceleration in a semicircular canal.
Ampulla crista	1	Contains specialized sensory receptor cells for sensing angular acceleration in a semicircular canal.
Anterior (motor) horn	1	This is part of the butterfly pattern of the gray matter in the spinal cord. It contains motor neurons.
Anterior capsule	1	Basal lamina of lens epithelium. It is impermeable to most everything, particularly lymphocytes and macrophages.
Anterior lens capsule	3	Basal lamina of lens epithelium. It is impermeable to most everything, particularly lymphocytes and macrophages.
Anterior lens epithelium	1	Covers anterior surface of the lens. Origin of lens fibers.
Aortic wall	4	Composed of elastic laminae and smooth muscle. It is difficult to distinguish between the tunica intima and media.
Apical dendrite	1	The dendrite of a pyramidal cell directed toward the surface of the brain.
Arcuate vein	1	A vein located between the medulla and cortex of the kidney.
Arrector pili (smooth muscle)	2	A small muscle causing erection of hair due to fright or cold.
Artefact	3	Even our sections may have nicks, folds, or tears.
Artefact (cracks)	1	Even our sections may have nicks, folds, or tears.
Artefact (fold)	1	Even our sections may have nicks, folds, or tears.
Arterial lumina	2	Hollow spaces in the interior of arteries.
Arterial wall	1	Contains smooth muscle and elastic lamina. In the CNS the walls are thinner than elsewhere.
Arteries	4	Carry (usually oxygenated) blood from the heart.
Arteriole	8	The smallest of arteries.
Arterioles	2	The smallest of arteries.
Artery	9	Carries (usually oxygenated) blood from the heart.
Artery lumen	1	Hollow space in the interior of an artery.
Artifact	1	A variation of spelling of artefact. Both are correct spellings.
Astrocyte	2	Supporting (glial) cells in the CNS with several functions, e.g., uptake of potassium ions and neurotransmitters.
Astrocyte nuclei	1	With our ordinary staining, only the nuclei of glial cells are visible.
Astrocytes	5	Supporting (glial) cells in the CNS with several functions, e.g., uptake of potassium ions and neurotransmitters.
Atretic follicle (glassy)	1	Glassy membrane is the remnant of the basal lamina.
Atretic follicles	1	Fate of most of the follicles in the ovary. "Atretic" means "degenerating."
Atretic follicles (glassy)	1	Glassy membranes are the remnants of the basal lamina.
Atretic follicles-glassy memb.	1	Glassy membrane is the remnant of the basal laminae.
Auerbach nerve plexus	1	Enteric nerve plexus between the circular and longitudinal muscle layers in the intestine (myenteric plexus).
Axon	5	Nerve fiber leading away from the neuron cell body. Conducts and transmits nerve impulses.