Abdominal cavity of Ox The abdominal cavity is the largest of the body cavities It is separated from the thoracic cavity by the diaphragm and continuous behind with the pelvic cavity; the line of demarcation being the terminal line or pelvic inlet The cavity is ovoid in form and is compressed laterally Its long axis […]
Splanchnology of Thoracic cavity The thoracic cavity is the second in size of the three body cavities. In form, it is somewhat like a truncated cone with the base cut off very obliquely and directed backwards Thoracic cavity presents a roof, floor, two lateral walls, a caudal wall and an cranial aperture or inlet The
Spinal cord is surrounded by spinal piamater. It is made up of outer white and inner gray matter. Surrounding the central canal of the spinal cord is the central mass of gray matter, the cross section of which is like ‘H’. The transverse bridge connecting the lateral halves of this is called the gray commissure. The central
The cerebellar hemispheres are divided by transverse fissures into lobules. The surfaces of lobules are marked by folds (folia or lamina) running parallel to the fissure and runs transversely to the longitudinal axis of brain. In cross section of folds, it is seen that they give off secondary and tertiary lamina the whole producing the appearance known
The cerebral cortex is the external layer of gray matter covering the convolutions and fissures of cerebral hemispheres. It contains the bodies of nerve cells, nerve fibres, neuroglia and blood vessels. It shows the following layers from without inwards: Piamater Molecular or plexiform Layer: It is poor in cells and has a framework of the reticulum
Histology of Nervous system can be divided into; Central nervous system (CNS) and Peripheral nervous system (PNS). CNS includes the brain and spinal cord. Cerebrum Cerebellum Spinal cord
The thymus varies in size and development with the age of the individuals. Thymus begins to decrease in size and undergone involution with advancing age and gets gradually replaced by fat and connective tissue. The thymus is covered by a connective tissue capsule, which gives off numerous septa, which divide the gland into a number
Spleen has a capsule of connective tissue rich in elastic tissue and smooth muscle, over the capsule is serosa. Trabeculae from the capsule extend into the interior and form complicated framework by anastomoses. The spaces within the connective tissue framework are filled with a soft sponge like tissue known as splenic pulp. On the basis of
Lymph gland Lymph nodes (Lymph gland) occur in the of lymphatics of lymph vessels. Lymph flows through them. These vary in size form those just visible to naked eye to those several centimeters in diameter. They are flattened and been-shaped with a definite hilum. They have a connective tissue capsule containing a few elastic and
The palatine tonsil is an egg-shaped mass, which bulges into the oral cavity. The oral surface is covered by stratified squamous epithelium. The epithelium passes down into the crypts in the substance of tonsil. Between the crypts the masses of dense. lymphoid tissue arranged in folds containing the individuals follicles. At intervals, between folds of lymphatic
