Vena cava of the horse with longitudinal smooth muscle bundles
Organ: Vena cava, Species: Horse. Comments: Cross section of the vena cava. Notice that the smooth muscle cells are arranged
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Horse
Ureter of Horse
Low power micrograph of the ureter from a horse. This is a typical hollow organ. The mucosa contains the transitional
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Mucous Glands in Horse Kidney
These glands secrete mucous into the urine and gives it a “stingy” character. Original mag. 13x H&E. Mucous glands. Renal
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Mucous Glands in Horse Renal Pelvis
The “stringy” nature of equine urine is due to the secretion of these mucous glands in the kidney. Original mag.
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Margo plicatus in horse, higher magnification.
At the margo plicatus the nonglandular, stratified squamous epithelium of the forestomach ends, and the simple columnar epithelium of the
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Non-glandular Portion of Horse Stomach, Margo Plicatus
At the margo plicatus the nonglandular, stratified squamous epithelium of the forestomach ends, and the simple columnar epithelium of the
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Nonglandular Portion of Equine Stomach, The Margo Plicatus
In some animals, in addition to the glandular portion, there exists a nonglandular region of the mucosa lined with stratified
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Liver Lobule in Horse Containing the Portal Triad.
The hepatic portal vein in this picture is large, round and ‘open’ in appearance here. Thecells forming the bile ducts
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Liver Lobule in Horse Showing the Portal Triad.
The portal triad is located in variable amount of connective tissue. The largest structure is the hepatic portal vein (which
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Lymph node of horse with melanoma.
Organ: Lymph node. Comments: Malignant melanoma cells from the skin of a horse have metastasized to a lymph node.
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Sebaceous glands in the skin of horse
Organ: Skin, Species: Horse, Comments: The secretory cells in the sebaceous glands have pale, vacuolated cytoplasm. The smaller, flatter cells
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Epidermis of horse
Organ: Skin, Species: Horse. Comments: Epidermis of horse. Stratified squamous keratinized epithelium. Keratinocytes with melanin pigment
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Skin of horse with sebaceous glands and hair follicles
Organ: Skin, Species: Horse. Comments: Skin of horse with simple hair follicles, sebaceous glands and parts of seat glands.
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Stratified squamous keratinized epithelium and hair follicles in equine skin
Organ: Skin, Species: Horse. Comments: Skin of horse with stratified squamous keratinized epithelium and hair follicles.
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Skin of horse with simple hair follicles
Organ: Skin, Species: Horse. Comments: Skin of horse showing surface epithelium, hair follicles and sebaceous glands. Simple hair follicles occur
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Parasympathetic ganglion cells in the adrenal gland of the horse
Organ: Adrenal, Tissue: Autonomic ganglion, Species: Horse. Comments: Parasympathetic ganglion associated with the adrenal gland. The neuronal cell bodies have
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Autonomic ganglion in the adrenal gland of the horse
Organ: Adrenal, Tissue: Autonomic ganglion, Species: Horse. Comments: Parasympathetic ganglion associated with the adrenal gland.
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Cortex-Medulla junction in the adrenal gland of the horse
Organ: Adrenal, Tissue: Cortex-Medulla junction, Species: Horse. Comments: Junction between the zona reticularis and the medulla in horse adrenal. The
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Zona fasciculata in the adrenal cortex of the horse
Organ: Adrenal Cortex, Tissue: Zona fasciculata, Species: Horse. Comments: The cells of the zona fasciculata are vacuolated due to the
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Adrenal cortex of the horse showing the three zones
Organ: Adrenal, Tissue: Cortex, Species: Horse. Comments: Low power micrograph showing zona glomerulosa, fasciculata and reticularis. Cells in the zona
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Zona glomerulosa in the adrenal cortex of the horse
Organ: Adrenal, Tissue: Zona glomerulosa, Species: Horse. Comments: The cells in the zona glomerulosa are arranged in high arcs. The
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Parathyroid gland of the horse
Organ: Parathyroid, Species: Horse. Comments: Parathyroid gland of the horse. Small cluster of eosinophilic oxyphils are scattered the more numerous
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Parathyroid gland of the horse at low power
Organ: Parathyroid Species: Horse. Comments: Low power micrograph of the parathyroid gland with a small portion of the thyroid also
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Pars intermedia in the pituitary of the horse with remains of Rathke’s pouch
Organ: Pituitary, Tissue: Pars intermedia, Species: Horse. Comments: Pars intermedia, remains of Rathke’s pouch and part of pars distalis. In
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Neurohypophysis of the horse with nerve fibers and pituicytes
Organ: Pituitary, Tissue: Pars nervosa, neurohypophysis, Species: Horse. Comments: Numerous unmyelinated axons of secretory neurons are seen here. The cell
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Adenohypophysis (pars distalis) of the horse with many acidophils
Organ: Pituitary, Tissue: Pars distalis, adenohypophysis, Species: Horse. Comments: Numerous acidophiles are present. They stain bright orange in an H&E
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Adenohypophysis of the horse with acidophils
Organ: Pituitary, Tissue: Pars distalis, adenohypophysis, Species: Horse. Comments: Numerous acidophiles are present. They stain bright orange in an H&E
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Pituitary gland of the horse showing the three main parts at medium magnification
Organ: Pituitary, Species: Horse. Comments: A higher magnification of the three regions of the pituitary. Remains of Rathke’s pouch are
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Pituitary gland of the horse showing the three main parts
Organ: Pituitary, Species: Horse. Comments: The pars distalis, with numerous glandular cells, stains darker than the pars nervous which contains
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Pituitary gland of the horse. Coronal section at low power
Organ: Pituitary, Species: Horse. Comments: Low power micrograph of the pituitary showing, in a concentric fashion, the pars distalis, pars
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Adrenal gland of the horse adjacent to the vena cava
Organ: Adrenal, Species: Horse. Comments: The adrenal gland (right) in this species is attached to the vena cava (left). The
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Adrenal gland of the horse adjacent to the vena cava
Organ: Adrenal, Species: Horse. Comments: The adrenal gland (right) in this species is attached to the vena cava (left). Notice
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