Haematopoetic and Lymphoreticular systems

Question 1

Unique feature of Camelid erythrocytes

Answer 1

Oval shaped vs the ellipse in other mammals

Smaller size and shape mean higher overall numbers but lower PCV

Oriented with the long axis in the direction of bloodflow - easier to traverse small capillaries when blood viscosity is incr in times of dehydration

Question 2

Camelied MCV and MCHC compared with cattle/horses

Answer 2

Lower MCV - camelids have smaller eryrthrocytes vs other species

Higher MCHC - camelids have higher haemoglobin concentraions

Question 3

Features of camelid leucocyte count

Answer 3

Significantly higher than other species (approx 9-22x10’9/L) with similar neutrophil:lymphocyte ratios

Question 4

T and B-cell lymphocytes

Answer 4

Simply - T cell lymphocytes are involved in cellular immunity and B-cells in humoral response

Question 5

2 broad causes of regenerative anaemia

Answer 5

Haemorrhage

Haemolysis