This is the very good application for science and medicine faculty students Capillaries found in endomysium and larger arteries and veins in skeletal muscle in through the perimysium. Blood vessels flow through, and only through, connective tissue. This is the perimysium between two groups of skeletal muscle fibers. 
pathguy.com
The function of circulatory system : transport of respiratory gases, hormone distrubition, heat distrubution, immune defence. Circulatory system has three essential components; a circulating fluid, a vascular system and heart. Lower metazoans lack a body cavity and do not have an internal circulatory system. Coelentrate do not have also an internal circulatory system because their body wall is very thin.
The body cavity of higher pseudocoelomate and coelomate animals contains a coelomic fluid. Some of the coelomate animalssuch as crustaceans, the vascular system is mesodermal tube that partially seperates thee blood from hemocoel.
A heart may be present to propel hemolymph through the vessels. In other some coelomate animals, the ceolom completely seperated from coelom. The closed circulatory system have a complete system of vessels and the blood is completely seperate and has a ddifferent composition from the interstitial fluid.
The vertebrate digestive tract, like that of invertebrates, is highly specialized in both structure and function for the digestion of a wide array of food. The basic components of the gut tube include the buccal cavity, pharynx, esophagus, stomach, small intestine, large intestine, rectum, anus/cloaca. A few vertebrates lack a stomach (cyclostomes, lungfish) but in most it functions for storage and acidic/enyzmatic digestion.
it is modified for fermentation in ruminant and pseudoruminant mammals. Absorbtion is the primary function of the small intestine in higher vertebrates, although some absorbtion occurs in the stomach and large intestine. There are three important glandular systems in vertebrate digestive system.
1-The salivary glands
2-The liver, gallbladder and bile duct
3-Pancreas and pancreatic duct
The liver is a large organ that secretes bile fluid.
Some mammals lack a gallbladder. Cephalochordates and cyclostomes lack a pancreas.
The large intestine of mammals is generally more developed than other vertebrates, is responsible for water reabsorbtion and formation of feces. Bacterial action in the hindgut can ferment cellulose and can synthesize vitamins. source: histology
Carbon is one of the key element of life. All life is about the carbon , so lets watch this usefull video about carbon cycle in nature.
The cell is the fundamental living unit in all life forms and the perfect example of nature’s genius operating at the microscopic level. From the first time when Anton Van Leeuwenhoek first observed cells under a microscope, the study of histology has come a long way. Histology is basically study of living cells and tissues under a microscope. As the science progressed, it was discovered that organisms such as Viruses which were much smaller than the most microscopic of bacteria were connected to the most gigantic of life forms by the same units known as cells.
Histology has helped identify differences invisible to the naked eye between animal and plant cells. The identification of a cell wall in plant cells which was absent in the latter has helped science delve into the fascinating regulatory mechanisms of plants. It has helped identify the causative agents of several dreaded illnesses and helped identify cures and immunization against many of them. It has helped understand and eventually, manipulate the life cycles of several microorganisms and plants leading to an industrial revolution of sorts that can boast of achievements ranging from cheese to Biofuel.
One of the biggest achievements of Histopathology has been in the field of medicine. From the use of humble stains to make cells visible to electron microscopy, the science of Histology has paved way for the detection and eradication several medical conditions. The latest diagnostic techniques and markers are being developed each day in a bid to improve the detection of conditions such as Cancer, Neonatal diseases, Genetic disorders. This is first step towards unlocking their cures in the future. Histology also forms an integral part of research aimed at plant and animal tissue culture. The science of Histology is our window to a fascinating world otherwise invisible to us.
You need some .pdf files about basic histology. If you need to study and learn more about histology just check these .pdf online documents:
www.oucom.ohio.edu
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2375821/pdf/joa0211-0412.pdf
Histology - Fisher Scientific - Welcome
histology brochure
Histology
For more Pdf files click here
