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Nervous system

What Is The Mechanism of Synaptic Transmission?

A synapse is a junction of an axon with either another neuron or an effector cell. At a synapse, the terminal bouton of the presynaptic neuron fits into a small depression on the postsynaptic neuron’s dendrite or cell body or on a cell within a muscle, a

Sensory – Motor Functions and Neurons

Neurons come in numerous sizes. For instance, a single sensory neuron from your fingertip has an axon that spreads out the length of your arm, while neurons within the brain may extend just a couple of millimeters. They also have different shapes depending upon their functions. Motor

Ventricles And Cerebrospinal Fluid

There are four interconnecting ventricles, or cavities, within the brain. Each ventricle is lined by ependymal cells and is filled with cerebrospinal fluid (CSF). The largest ventricles are the two lateral ventricles (first and second ventricles), which are located within the cerebral hemispheres. The ihird ventricle is

Arachnoid Villi and Arachnoid Granulations

Arachnoid villi originate from the surface of arachnoid mater and are thin finger-like projections. Human arachnoid villi have four parts: Fibrous capsule Arachnoid cell layer Cap cell cluster Central core They eventually perforate dura in order to project within the dural venous sinuses, before that they move

Peripheral Nervous System (PNS) – Cranial Nerves and it’s Reflexes

The peripheral nervous system (PNS) consists of cranial and spinal nerves that connect the CNS to other portions of the body, along with sensory receptors and ganglia. A nerve consists of axons that are bound together by connective tissue. Motor nerves contain mostly axons of motor neurons;

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