The human nervous system processes sensory input received from the sensory organs. Topographically, it is divided into the central nervous system (CNS) and the peripheral nervous system (PNS). The following is an overview of the structure and function as well as possible diseases of the peripheral nervous system. What is the peripheral nervous system? The … Peripheral Nervous System: Structure, Function & Diseases
The spurting duct, also called the ductus ejaculatorius, is a paired structure of the male reproductive organ. The ducts pass through the prostate and open into the urethra. The squirt ducts transport semen into the urethra of the penis, from where it passes out of the body. What is the squirting canal? On each side … Spray Channel: Structure, Function & Diseases
The median nerve arises from the brachial plexus, which exits the spine between the 6th cervical and 1st thoracic vertebrae (C6 – Th1). The nerve is classified as part of the peripheral nervous system and motor and sensory enervates part of the muscles of the forearm and hand, including fingers. What is the median nerve? … Median Nerve: Structure, Function & Diseases
The suprascapular nerve innervates specific muscles of the shoulder region. The functions of the nerve are explained by its location and the way it transmits signals. Mechanical and biochemical nerve damage can lead to diseases and conditions explained in more detail below. What is the suprascapular nerve? The suprascapular nerve is a sensorimotor nerve. Colloquially, … Suprascapular Nerve: Structure, Function & Diseases
The submandibular ganglion is a collection of nerve cell bodies in the mandibular region. The ganglion interconnects parasympathetic nerve fibers in the course to the mandibular salivary glands and serves as a transit station for sympathetic fibers from the glands. Damage to the mandibular ganglion can interfere with salivary secretion from the sublingual and submandibular … Submandibular Ganglion: Structure, Function & Diseases
Skeletal muscles are particularly important for the human body, because they allow it to move freely. They are responsible for movements that the body performs voluntarily and actively, for example, the movement of the arms and legs. They also belong to the striated musculature, as they have fine transverse stripes, which gives a periodic, repetitive … Musculus Rectus Capitis Lateralis: Structure, Function & Diseases
Synonym Schwannoma, Neurilemmoma, Benign Peripheral Nerve Sheath Tumor (BPNST) English : neurinoma Introduction The neurinoma is a slow-growing, benign tumor, which is usually surrounded by a capsule of connective tissue and grows displacement-not infiltrating the surrounding tissue. It is derived from so-called Schwann cells of the peripheral nervous system and develops at the cranial nerves … Neurinoma
Occurrence A neurinoma can occur in all sections of the peripheral nervous system. Preferred locations are the cerebellar bridge angle (acoustic neurinoma) or the sensitive nerve roots in the spinal cord (spinal neurinomas). Acoustic neurinomas originate from a part of the auditory and vestibular nerve (vestibulocochlear nerve, VIII cranial nerve) and develop at the point … Occurrence | Neurinoma
Symptoms The neurinoma itself is movable and not painful. Hearing loss (hypacusis) is the most common symptom and takes a gradual course due to the slow growth of the neurinoma. Occasionally, patients complain of hearing disorders when using the telephone and describe a change in their telephone calling habits by changing the receiver to the … Symptoms | Neurinoma
Therapy If there are no symptoms and the neurinoma is still very small, the tumor does not need to be treated. However, it should be well observed by regular check-ups using MRI.Radiation therapy can be performed for smaller neurinomas, but usually the tumor is removed completely surgically, which leads to healing. The neurinoma does not … Therapy | Neurinoma
Summary A neurinoma is a benign new formation of Schwann cells. The most common type of neurinoma is the acoustic neurinoma. This type of neurinoma causes progressive hearing loss (hypacusis), ringing in the ears and balance disorders. As the size of the tumor increases, further cranial nerves fail, leading to facial paresis and numbness in … Summary | Neurinoma
For every 1,000 births, an average of two children are born with a hearing disorder. Problems with hearing can greatly affect a child’s development. Newborn hearing screening was introduced in Germany to assess hearing abilities at an early stage. What is newborn hearing screening? Newborn hearing screening is an early detection examination to diagnose hearing … Newborn Hearing Screening: Treatment, Effects & Risks
