Blood: The Histology Guide - University of Leeds
WEBWhite blood cells are much less common than red blood cells. There are five types of white blood cell (leucocyte). These are divided into two main classes . Granulocytes (includes Neutrophils, Eosinophils and Basophils) Agranulocytes (includes Lymphocytes and …
Blood: The Histology Guide - University of Leeds
WEBThe functions and constituents of blood - cells and plasma. The properties of red blood cells (erythrocytes). The five different types of white blood cells and how to identify them in a blood smear.
Blood: The Histology Guide - University of Leeds
WEBOne microlitre of blood contains around 5 million cells. They are essential for transport of carbon dioxide and oxygen around the body. They are 'born' and mature in the bone marrow (see the section on haemopoesis ).
Respiratory: The Histology Guide - University of Leeds
WEBThe epithelium is ciliated cuboidal epithelium and contains some secretory cells called clara cells. The respiratory bronchioles lead into alveolar ducts, (which are surrounded by smooth muscle, elastin and collagen), which lead into the alveolar sacs. These have several alveoli, surrounded by blood vessels - from the pulmonary system.
Blood: The Histology Guide - University of Leeds
WEBPlatelets are not true cells, but are in fact cytoplasmic fragments from large cells found in the bone marrow, called megakaryocytes. There are around 150 to 400 thousand platelets in a millilitre of blood, and the are essential for haemostasis.
Lymphoid: The Histology Guide - University of Leeds
WEBBlood from the inferior thyroid, and internal thoracic arteries enters the thymus. The epithelial cells form a sheath around the capillaries, to form a barrier to the entry of antigenic material into the spaces between the epithelial cells in the reticular network.
Respiratory: The Histology Guide - University of Leeds
WEBCan you identify the alveolar spaces, capillary, red blood cell, endothelium, and type I pneumocyte? The dark staining material on the lining of the alveolar space is surfactant.
Circulatory System: The Histology Guide - University of Leeds
WEBLook at this photograph of a venule, and identify the lumen (containing red blood cells) and endothelial cells.
What is Histology: The Histology Guide - University of Leeds
WEBNuclei are stained bright red, collagen, basement membrane and mucin are stained blue, muscle and red blood cells are stained orange to red. Good for staining connective tissue and epithelium.
Circulatory System: The Histology Guide - University of Leeds
WEBThe arterial hydrostatic pressure that results from ventricular contraction is the 'systolic blood pressure' (systole is greek for contract). Between heart contractions, the elastic walls recoil, to maintain blood pressure, continuing to move blood even when ventricles are …