The brain is a large organ which lies in the cranial cavity. The average weight of brain is 1.4kg. It is divided in 4 parts: cerebrum, brain stem, diencephalon and cerebellum. DIENCEPHALON This part of brain connects the cerebrum to […]
CENTRAL NERVOUS SYSTEM The CNS is divided in two essential pats: the brain and spinal cord. Both these parts are surrounded and protected; brain is enclosed by the skull and the spinal cord is protected by vertebral column. The membranous […]
Nervous tissue is of two types: neurons and neuralgia. Neurons are the working unit of the nervous system that generate nerve impulses. These neurons are supported by the connective tissue; collectively these tissue are known as neuralgia. Neuralgia is formed […]
BRAIN The brain is a large organ which lies in the cranial cavity. The average weight of brain is 1.4 kg. It is divided in 4 parts: cerebrum, brain stem, diencephalon and cerebellum. CEREBRUM Cerebrum is the largest part of […]
CRANIAL NERVES There are 12 pairs of cranial nerves which originate from the nuclei in the inferior surface of the brain, out of which some are sensory some are motor nerves and the remaining one are the mixed nerves that […]
There are 31 pairs of spinal nerves that leave the vertebral column through the intervertebral foramina. These foramina are formed by the adjacent vertebrae. These nerves are named according to the vertebral region with which they are associated; that is: […]
The peripheral nervous system consist of 3 parts- 31 pairs of spinal nerves 12 pairs of cranial nerves autonomic nervous system Autonomic Nervous System ANS is a involuntary part of nervous system and controls involuntary body activities. Stimulation of ANS […]
The spinal cord is a long cylindrical portion of the central nervous system. It is suspended in the vertebral column and is enclosed by the meninges and cerebrospinal fluid. The spinal cord is continuous with the medulla oblongata and extends […]