Year 1 Histology

LYMPH NODE It is a rounded or kidney shaped structure. There is slight indentation, the hilum on one side of the node, where blood vessels enter and leave. Lymphatic vessels enter the node at many places over the convex surface … Read More …

The kidney is covered by a connective tissue capsule and adipose tissue. It is divided into an outer cortex which appears granular in a cut section, and an inner medulla, made up of 8-18 conical masses called renal pyramids. The … Read More …

Skin is the largest organ of the body.It is a major barrier between the body and the external environment. Main Functions of skin: Protection: It forms a protection layer against mechanical/thermal/chemical stress, infection Sensation: skin contains touch, pressure, pain and … Read More …

The urinary bladder is a temporary water-proof storehouse of urine. Its wall is thicker and lumen is much bigger than that of ureter. It is also comprised of inner mucous coat, middle muscular coat and outer fibrous coat. The mucosa … Read More …

Trachea It is a thin walled flexible tube. Its lumen is kept permanently patent by means of ‘C’ shaped hyaline cartilages. The trachea is lined by pseudostratifled ciliated columnar epithelium with interspersed goblet cells resting on a basement membrane. The … Read More …

Striated Muscle It is present in muscles of the limbs and trunk. The muscle as a whole is enclosed in a connective tissue layer called epimysium. Septa extend inwards from the epimysium dividing the muscle into various fasciculi. Thus each … Read More …

The spinal cord is comprised of a central canal surrounded by grey matter. Around this grey matter is the white matter. Grey Matter – Contains bodies of nerve cells. – Has dendrites and parts of the axon. – Contains protoplasmic … Read More …

Cardiac muscle is the muscle of the heart. Cardiac muscle resembles skeletal muscle partially. It consists of short cylindrical muscle fibers, which branch and anastomose with each other. Each fiber contains a single oval centrally placed large nucleus. Some cells … Read More …