Pathology of the GIT

The following are causes of [blank_start]secretory diarrhoea[blank_end] ETEC (e.coli) as it causes Cl- excretion from enterocytes. Salmonellosis due as it prevents closure of Cl- channels. Acute enteric salmonellosis Cl- interference

[blank_start]secretory diarrhoea[blank_end]: bacteria release toxins which bind to a receptor increasing the cAMP. This activated the H2O pumps and disturbs the electrolytes as there is net increase of water + electrolytes in the SI and colon [blank_start]inflammatory diarrhoea[blank_end]: The bacteria release cytotoxins which may cause death of enterocytes directly but if not then the leukocyte recruitment and cytokines will preventing proper functioning of the intestines. [blank_start]malabsorption diarrhoea[blank_end]: bacterial growth causes poor absorption due to bile salt conjugation, toxin release, or bacterial consumption of nutrients

The consequences of diarrhoea are: D[blank_start]ehydration[blank_end] E[blank_start]lectrolyte imbalance[blank_end] M[blank_start]etabolic acidosis[blank_end]

T/F: a piece of gut can be examined for organisms and health status from an animal that died naturally if the vet arrives next day

Which of the following cells/ organs are involved in the pathology of salmonellosis?

Lawsonia Intracellularis Occurs in [blank_start]immunosuppressed[blank_end] animals and in horses will be a [blank_start]proliferative[blank_end] disease and also a [blank_start]haemorrhagic[blank_end] disease in pigs.

The following are mechanisms of which types of disease? A. Local effects of toxins on the mucosa = haemorrhagic, fibrinous or necrotic enteritis B. Secretory effects of locally acting enterotoxin = diarrhoea and mucosal lesions C. Systemic absorption of enterotoxins = effects sites around the body

The following description is of which type of intracellular bacterial pathogen? Fever, leukopenia, depression, inappetance, diarrhoea Abortion in pregnant mares. Fibrino-necrotic/ ulcerative colitis.

This is pathology of which GIT affecting pathogen?

This is a diarrhoea causing disease which affects pigs and increases the intracranial pressure = neurological signs.

When a horse has acute grass sickness why is it important to do in response to the tympany?

What is true for chronic grass sickness?

Why can't dogs vomit when they are experiencing GDV? The [blank_start]cardia is obstructed[blank_end].

The small intestines goes through the small hole in the omentum and there is compression of the blood vessels and impaired venous drainage = infarction.

What tissue does the parvovirus multiply within? A: in the [blank_start]lymph nodes[blank_end] - [blank_start]tonsils[blank_end] and m[blank_start]esenteric[blank_end]

tick the histological features of parvovirus

most corona viruses cause [blank_start]enteric[blank_end] disease

Which disease targets the oesophagus and the gastric regions of the GIT?

intestinal loop strangulating lipoma can cause

[blank_start]Bovine corona virus[blank_end]: diarrhoea in calves and lesions in SI and colon [blank_start]Winter dysentery[blank_end]: diarrhoea in adult cows and lesions in colon