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Active Transport - Physiology
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Active transport is reliant on carrier proteins and thus follows the same rules as facilitated diffusion in that they are specific have a maximum rate and are subject to competition. Crucially they transport substances against their concentration gradient and so require energy to work.

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02/05/2015
Anus - Anatomy & Physiology
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The anus is the terminal portion of the alimentary tract which communicates with the external environment. Two sphincters control it's aperture. It allows faeces and gas to leave the body. Defeacation is the process where faeces are expelled from the rectum through the anus.

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02/05/2015
Blood Brain Barrier - Anatomy & Physiology
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The Blood Brain Barrier refers to the mechanisms in place around the microvasculature of the brain to ensure optimal neural functioning. Endothelial cells are the structural basis of the blood brain barrier and are joined by tight cellular junctions formed by the transmembrane proteins the occludins and the claudins.

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02/05/2015
Blood Cells - Overview
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Blood cells develop in the bone marrow from a common stem cell in the process known as haematopoiesis. Once mature, cells are divided into groups that reflect their morphological and functional characteristics including the erythrocytes, or red blood cells, the granulocytes, the agranulocytes and the megakaryocytes.

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Date Added:
02/11/2015
Bone & Cartilage Development - Anatomy & Physiology
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Osteogenesis is the formation of bone. Bone forms from one of three lineages; the skull forms from the neural crest; the limb skeleton forms from the lateral plate mesoderm; and the axial skeleton forms from the paraxial mesoderm (sclerotome).

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02/05/2015
Bursa of Fabricius
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The Bursa of Fabricus is a primary lymphoid organ found in birds. The bursa was the first place that a certain subset of lymphocytes was observed and consequently they were named B lymphocytes (bursa of Fabricius or bursa equivalent organs). The bursa is involved in the differentiation of B lymphocytes.

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Date Added:
02/05/2015
CNS Vasculature - Anatomy & Physiology
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Blood is supplied to the brain from a ventral arterial supply in all species; from a circle of arteries called the Circle of Willis (also called the cerebral arterial circle or arterial circle of Willis) which lies ventrally to the hypothalamus where it forms a loose ring around the infundibular stalk. Although the appearance of the circle of Willis is fairly constant amongst mammals, the sources of blood supply to the circle and the direction of flow around the circle are very species specific. Blood is supplied to the brain by the internal carotid artery in dogs and horses whilst in other domestic species the main blood supply is from branches of the maxillary artery.

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Date Added:
02/05/2015
Caecum - Anatomy & Physiology
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The cecum is a blind ending diverticulum of the large intestine and it exists at the junction of the ileum and the ascending colon. Its size and physiological importance varies between species. It is a site of microbial fermentation, absorption and transportation.

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Date Added:
02/05/2015
Camelid Anaesthesia
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Camelids are becoming more common in general practice and so an understanding of anaesthesia techniques is becoming more important. The same techniques used in other species can be adapted and used in camelids including both local and general anaesthesia.

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Date Added:
02/27/2015
Cardiorespiratory System Overview - Anatomy & Physiology
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The mammalian cardiovascular and respiratory systems have evolved primarily to provide the tissues of the body with oxygen and to remove carbon dioxide. The cardiorespiratory system also has metabolic and heat exchange roles.

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Date Added:
02/05/2015
Carnivore Mammary Gland - Anatomy & Physiology
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Each mammary complex consists of 5-20 mammary units and their corresponding ducts. The ducts open separately on the tip of the teat. Shallow grooves indicate the border between complexes. An intermammary sulcus divides the right from the left row.

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Category:Lower Urinary Tract - Anatomy & Physiology
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The lower urinary tract is the collection of organs which convey the formed urine from the kidneys to the exterior of the body. The urine is not altered in this part of the system in species other than the horse (where mucous is added) but instead its function is to collect and store the urine until enough of it is collected for release to become necessary. This gives the animal urinary continence. Three major structures make up this tract. The ureters, the bladder and the urethra.

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Anatomy/Physiology
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Date Added:
02/05/2015
Category:Lymphoreticular System
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Also referred to as the reticuloendothelial system or mononuclear phagocytic system. It is comprised of primary lymphoid organs (bone marrow, Bursa of Fabricius, the foetal liver and the thymus) which are responsible for the production of lymphocytes, and the secondary lymphoid organs (lymph nodes, spleen and mucosal associated lymphoid tissue) which function to provide an environment where lymphocytes can react to antigen from the tissue fluid, blood and mucosal surfaces.

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Life Science
Anatomy/Physiology
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Date Added:
02/05/2015
Coagulation Tests
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It is important that all aspects of haemostasis can be independently evaluated. This will help to identify the phase affected and to pinpoint what the abnormality is. There are tests available to assess primary haemostasis, secondary haemostasis and fibrinolysis.

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Date Added:
02/11/2015
Deglutition
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Deglutition is the process of swallowing. Food is passed from the oral pharynx into the oesophageal/laryngeal pharynx whilst the epiglottis closes across the entrance of the trachea. It is an involuntary reflex preventing food from passing into the trachea and thus preventing choking and respiratory pneumonia.

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Life Science
Anatomy/Physiology
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Date Added:
02/05/2015
Developmental Biology Overview - Anatomy & Physiology
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Embryo, when applied to mammals, is the term given to the developing organism from fertilisation to birth. Developmental biology, or embryology, is the study of the embryo as it transforms from a unicellular zygote to a multicellular, mulitsystemed organism which in some cases is ready to function autonomously at birth. Developmental biology is of interest to vets in understanding why organs and systems are the way they are, but also in understanding genetic diseases and applying cell based therapies to treat loss or damage to tissues.

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Life Science
Anatomy/Physiology
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Date Added:
02/05/2015
Diaphragm - Anatomy & Physiology
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The Diaphragm is a dome-shaped musculotendinous sheet separating the thoracic and abdominal cavities. It is convex on its cranial surface. In the neutral position between full inspiration and full expiration, the most cranial part of the diaphragm is in line with the 6th rib.

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Anatomy/Physiology
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Date Added:
02/05/2015
Endocrine System Overview - Anatomy & Physiology
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Comprised of a group of duct-less glands with limited or no anatomical contact with each other, the endocrine system integrates and controls metabolic activity through the secretion of hormones into the vascular system. These hormones may have their effects on tissues and organs far from where they were produced.

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Life Science
Anatomy/Physiology
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Date Added:
02/05/2015