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- https://med.libretexts.org/Bookshelves/Veterinary_Medicine/Veterinary_Histology_(Jennings_and_Premanandan)/07%3A_Integument/7.12%3A_Specialized_Anatomic_SitesThis stratum corneum is the portion of the claw that is “trimmed”. Beneath the epidermis is the highly vascular and well-innervated dermis, or “quick”. The deep dermis fuses with the periosteum of the...This stratum corneum is the portion of the claw that is “trimmed”. Beneath the epidermis is the highly vascular and well-innervated dermis, or “quick”. The deep dermis fuses with the periosteum of the ungual process of the distal P3. The outer two layers, the stratum externum and stratum medium, are generated by and grow downward from the epidermis of the coronary band (or coronet, similar to the cuticle of a fingernail).
- https://med.libretexts.org/Bookshelves/Veterinary_Medicine/Veterinary_Histology_(Jennings_and_Premanandan)/08%3A_Gastrointestinal_System/8.06%3A_EsophagusThe primary physiologic role of the esophagus is the physical transport of ingesta from the oral cavity to the stomach. The constituents of the tunica muscularis varies based on species and location a...The primary physiologic role of the esophagus is the physical transport of ingesta from the oral cavity to the stomach. The constituents of the tunica muscularis varies based on species and location along the length of the esophagus. Pigs, similar to humans, primarily contain skeletal muscle in the orad 1/3 of the esophagus which transitions to a combination of skeletal and smooth muscle, and terminates in uniform smooth muscle, distally.
- https://med.libretexts.org/Bookshelves/Veterinary_Medicine/Veterinary_Histology_(Jennings_and_Premanandan)/10%3A_Respiratory_System/10.09%3A_Pulmonary_blood_supplyThe lungs receive two distinct sources of blood supply: pulmonary arterial supply and bronchial arterial supply. These capillaries then form into venules, then veins that progressively become larger i...The lungs receive two distinct sources of blood supply: pulmonary arterial supply and bronchial arterial supply. These capillaries then form into venules, then veins that progressively become larger in size and exit the lung, entering the left atrium. Bronchial arteries originate from the thoracic aorta and also course along large airways, providing much of the blood supply to these structures, as well as the pleura.
- https://med.libretexts.org/Bookshelves/Veterinary_Medicine/Veterinary_Histology_(Jennings_and_Premanandan)/07%3A_Integument/7.09%3A_Dermal_Adnexa_-_Sebaceous_GlandsThe sebaceous duct and the sebum empties into the isthmus portion of the hair follicle, coating the hair shaft and surrounding epidermis in sebum. Histologically, the sebocytes of the Meibomian gland ...The sebaceous duct and the sebum empties into the isthmus portion of the hair follicle, coating the hair shaft and surrounding epidermis in sebum. Histologically, the sebocytes of the Meibomian gland appear identical to those of sebaceous glands in the skin, but are organized into a much larger, single gland. Glands of Zeis are specialized sebaceous glands that are associated with eyelashes, specialized hair follicles located at the margins of the eyelid.
- https://med.libretexts.org/Bookshelves/Veterinary_Medicine/Veterinary_Histology_(Jennings_and_Premanandan)/06%3A_Cardiovascular_System/6.07%3A_Capillaries_and_sinusoidsLoosely distributed around capillaries are pericytes that are directly apposed to the basal lamina and are capable of transdifferentiating into different cell types (ie. The most ubiquitous microcircu...Loosely distributed around capillaries are pericytes that are directly apposed to the basal lamina and are capable of transdifferentiating into different cell types (ie. The most ubiquitous microcirculatory vessel in the body is the continuous capillary, with endothelial cells linked by tight junctions and intercellular gaps of approximately 1 nm. Sinusoids are slightly larger than capillaries and are found in the adrenal glands, liver, spleen, and bone marrow.
- https://med.libretexts.org/Bookshelves/Veterinary_Medicine/Veterinary_Histology_(Jennings_and_Premanandan)/08%3A_Gastrointestinal_System/8.09%3A_Stomach_-_additional_interspecies_variationsThe wall of the proventriculus contains numerous large, well-circumscribed glands (proventricular glands), each formed by collections of branching tubules lined by regions of columnar mucous cells (mi...The wall of the proventriculus contains numerous large, well-circumscribed glands (proventricular glands), each formed by collections of branching tubules lined by regions of columnar mucous cells (microscopically similar to those of the gastric pits) and cuboidal to low columnar secretory cells.
- https://med.libretexts.org/Bookshelves/Veterinary_Medicine/Veterinary_Histology_(Jennings_and_Premanandan)/01%3A_The_Cell/1.12%3A_TestingThis is a test for hypothesis. This is a test link to the respiratory chapter starting page.
- https://med.libretexts.org/Bookshelves/Veterinary_Medicine/Veterinary_Histology_(Jennings_and_Premanandan)/07%3A_Integument/7.10%3A_Dermal_Adnexa_-_Epitrichial_(Apocrine)_Glands_and_Eccrine_GlandsThese structures serve to receive and excrete the secretions of specialized glands, called apocrine glands of the anal sac (anal sac glands) that line the wall of the anal sac. The ceruminous glands c...These structures serve to receive and excrete the secretions of specialized glands, called apocrine glands of the anal sac (anal sac glands) that line the wall of the anal sac. The ceruminous glands contribute to cerumen, a waxy product composed of the combined secretions of ceruminous glands and sebaceous glands of the external ear canal.
- https://med.libretexts.org/Bookshelves/Veterinary_Medicine/Veterinary_Histology_(Jennings_and_Premanandan)/04%3A_Muscle/4.03%3A_OverviewThey all exhibit excitability as their plasma membranes change their electrical states (depolarization) and send an electrical signal in a wave-like pattern called an action potential along the entire...They all exhibit excitability as their plasma membranes change their electrical states (depolarization) and send an electrical signal in a wave-like pattern called an action potential along the entire length of the skeletal muscle cell membrane. On the other hand, both cardiac muscle and smooth muscle can respond to other stimuli, such as catecholamines (epinephrine and norepinephrine) from the blood, hormones and local stimuli.
- https://med.libretexts.org/Bookshelves/Veterinary_Medicine/Veterinary_Histology_(Jennings_and_Premanandan)/10%3A_Respiratory_System/10.06%3A_Air_conduction-_Terminal_bronchioles_Respiratory_bronchioles_and_Alveolar_ductsBronchioles open into short segments called terminal bronchioles, which are thin-walled branches of the bronchioles. Respiratory bronchioles are lined by two types of epithelial cells: ciliated column...Bronchioles open into short segments called terminal bronchioles, which are thin-walled branches of the bronchioles. Respiratory bronchioles are lined by two types of epithelial cells: ciliated columnar cells and club cells (also known as Clara cells). These projections of cuboidal epithelium are often located on either side of the entrance into alveolar sacs, which branch from the “walls” of the alveolar ducts.
- https://med.libretexts.org/Bookshelves/Veterinary_Medicine/Veterinary_Histology_(Jennings_and_Premanandan)/13%3A_Female_Reproductive_System/13.03%3A_Gonadal_developmentThe first step in gonadal development takes place when the primordial germ cells migrate from the allantois (portion of the placenta) to the genital ridge, the structure that will become the undiffere...The first step in gonadal development takes place when the primordial germ cells migrate from the allantois (portion of the placenta) to the genital ridge, the structure that will become the undifferentiated gonad. The gonadal ridges are protuberances within the coelomic cavity of the developing fetus. Ultimately Sex determination of the undifferentiated gonad is dependent on the presence of the sex determining region Y (SRY) gene found on the short arm of the Y chromosome.
