Some skin receptors are only free nerve endings and may penetrate the epidermis. Other skin receptors possess connective tissue sheaths and mostly occur in the dermis and are often called corpuscles or bulbs. The skin has the following receptors: (i) Free nerve endings are distributed between cells of the epidermis. Most of these nerve endings are sensitive to pain, (ii) [...]
The following points highlight the sixteen important diseases of neural system. Disease # 1. Poliomyelitis: Poliomyelitis is an acute viral infection that destroys the cell bodies of motor neurons in the anterior horn of the spinal cord. Disease # 2. Meningitis: Meningitis, an inflammation of the meninges, is usually caused by an infectious organism. Several kinds of bacteria and viruses [...]
The below mentioned article provides a study note on the Neurons as Structural and Functional Unit of Neural System. Neurons (= Nerve Cells): A neuron is a structural and functional unit of the neural tissue and hence the neural system. Certain neurons may almost equal the length of body itself. Thus neurons with longer processes (projections) are the longest cells [...]