An action potential is a short-term change in membrane potential. Action potentials typically arise at the axon hillock of a neuron and are the prerequisite for stimulus transmission. What is the action potential? Action potentials typically arise at the axon hillock of a nerve cell and are the prerequisite for stimulus transmissions. The action potential … Action Potential: Function, Tasks, Role & Diseases
Oligodendrocytes belong to the glial cell group and are an intrinsic part of the central nervous system, along with astrocytes and neurons. As glial cells, they perform supportive functions for neurons. Some neurological diseases, such as multiple sclerosis, are caused by dysfunction of oligodendrocytes. What are oligodendrocytes? Oligodendrocytes are a special type of glial cells. … Oligodendrocytes: Structure, Function & Diseases
The motor or neuromuscular endplate, is the point of contact between a motor neuron and a muscle cell. It is also called the neuromuscular synapse and is used to transmit excitation between a motor nerve fiber and a muscle fiber. What is the motor end plate? The neuromuscular synapse is an excitatory synapse that specializes … Motor End Plate: Structure, Function & Diseases
The infraspinatus muscle extends between the scapula, glenohumeral joint capsule, and greater humerus. It is part of the striated (skeletal) musculature and is important for external rotation, abduction, and adduction of the arm. As part of the rotator cuff, it can be damaged if the cuff ruptures. What is the infraspinatus muscle? A person normally … Infraspinatus Muscle: Structure, Function & Diseases
The putamen or outer lenticular nucleus is a structure in the brain that belongs to the corpus striatum or nucleus lentiformis. Its function is to process neural signals relevant to the control of motor processes. Damage to the putamen may accordingly be accompanied by disturbances in voluntary movements. What is the putamen? The putamen is … Putamen: Structure, Function & Diseases
Meissner’s corpuscles are RA mechanoreceptors that sense pressure changes and belong to the differential receptors. Meissner corpuscles exclusively report pressure changes and adapt to constant pressure stimuli. Misperceptions of the receptors often have their origin in the central nervous system. What is the Meissner corpuscle? Receptors are the first site of human perception. These sensory … Meissner Corpuscles: Structure, Function & Diseases
An axon is a special nerve process that transmits nerve impulses from a nerve cell to a target organ such as a gland or muscle, or to another nerve cell. In addition, axons are capable of transporting certain molecules in both directions toward the cell soma and also in the opposite direction via a process … Axon: Structure, Function & Diseases
The axon hillock represents the site of origin of the axon. This is where the action potential is formed, which is transmitted through the axon to the presynaptic terminal. The action potential forms in the axon hillock from the sum of individual specific stimuli and must reach a specific threshold value for stimulus transmission. What … Axon Hillock: Structure, Function & Diseases
The precuneus is a subarea in the cerebrum. It is located at the level of the back of the head, directly under the skullcap. Together with the hippocampus, it performs tasks in the learning process. What is the precuneus? The precuneus is a part of the central nervous system. It is located in the cerebrum, … Precuneus: Structure, Function & Diseases
Nerve conduction is the ability of nerve fibers to transmit bioelectrical impulses at a specific rate to both directions of conduction. Conduction occurs via action potentials in salvatory excitatory conduction. In diseases such as polyneuropathy, nerve conduction is impaired. What is nerve conduction? Nerve conductance is the ability of nerve fibers to transmit bioelectrical impulses … Nerve Conduction: Function, Tasks, Role & Diseases
Nerve conduction velocity indicates the speed at which electrical stimuli are transmitted along a nerve fiber. By measuring nerve conduction velocity, nerve function can be checked and diseases affecting the nervous system can be diagnosed. The speed of transmission of electrical impulses is calculated by the distance between two points and the time required. What … Nerve Conduction Velocity: Function, Tasks, Role & Diseases
Nerve roots are the connection between the peripheral and central nervous systems. They are located in the spinal canal of the spinal cord, where a spinal nerve carries one anterior and one posterior nerve root. Herniated disc is the best-known condition that can cause nerve root syndrome, with symptoms such as numbness and paralysis. What … Nerve Root: Structure, Function & Diseases
