Cranial nerves arise directly from the brain. Of these, most are located in the brain stem. The job of the cranial nerves is to form the center of the nervous system in the head, neck and trunk. What are cranial nerves? Through both halves of the body run twelve cranial nerves , which perform a … Cranial Nerves: Structure, Function & Diseases
Eye movements can be divided into active and passive movements. While active eye movements are used to record visual information, passive eye movements are used to diagnose motility disorders. What are eye movements? The human eye in cross-section showing its anatomical components. Click image to enlarge. The totality of all eye movements is also called … Eye Movement: Function, Task & Diseases
The levator labii superioris muscle is a striated muscle of the mimic musculature. The main function of the muscle is the upward movement of the upper lip. Damage to the facial nerve paralyzes the levator labii superioris muscle. What is the levator labii superioris muscle? Skeletal muscles are composed of striated muscle and are largely … Musculus Levator Labii Superioris: Structure, Function & Diseases
The glossopharyngeal nerve belongs to the cranial nerves and has six branches in which it carries motor, parasympathetic, sensory and sensitive fibers. With them, the glossopharyngeal nerve predominantly innervates the pharynx, tongue, and palatine tonsil. What is the glossopharyngeal nerve? Twelve cranial nerves exit the brain at different points in the head and increasingly branch … Glossopharyngeal Nerve: Structure, Function & Diseases
The hypoglossal nerve is the twelfth cranial nerve. The motor nerve innervates the tongue muscles. Paralysis of the nerve results in speech and swallowing disorders. What is the hypoglossal nerve? The tongue is a mucosa-covered muscular organ. As such, it is involved in everyday human life with countless movements. Humans need the tongue and its … Hypoglossal Nerve: Structure, Function & Diseases
Cerebrospinal fluid circulation is a process of the central nervous system that permanently circulates cerebrospinal fluid in the inner and outer cerebrospinal fluid spaces around the brain and spinal cord. The CSF nourishes and protects the brain and spinal cord. Circulatory disturbances increase the volume of circulating CSF and can result in hydrocephalus. What is … Cerebrospinal Fluid Circulation: Function, Role & Diseases
The olfactory cortex, or olfactory brain, is the three-layered part of the cerebrum located above the eye sockets that is responsible for olfactory perception and processing. Although it has little more cortical capacity in humans, it allows discrimination of up to a trillion different odors and projects olfactory perceptions directly to brain areas of memory … Olfactory Cortex: Structure, Function & Diseases
Definition The base of the skull is called base cranii in anatomical terminology and is a part of the neurocranium. The skull (lat. Cranium) is divided into the viscerocranium (facial skull) and the neurocranium (cerebral skull). The base of the skull is divided into the base cranii interna, the side facing the brain, and the … Base of the skull
Fossa cranii posterior The occipital bone is mainly involved in the formation of the posterior fossa, the temporal bone and the sphenoid bone have smaller parts of the bony structure. The posterior fossa contains the occipital lobe of the cerebrum in its upper part and the cerebellum in its lower part. In the bones of … Fossa cranii posterior | Base of the skull
Introduction Paralysis of the eye muscles is also known in ophthalmology as ophthalmoplegia or eye muscle paresis. This is a disease of the eyes that causes paralysis of the eye muscles. Paralysis of the eye muscles is a movement restriction of one or both eyes caused by damage to the eye muscle, the transmission point … The eye muscle paralysis
Synonyms Medulla oblongata, bulb medullae spinalis Definition The medulla oblongata is part of the central nervous system (CNS). It is the lowest (caudal) part of the brain. The medulla oblongata is counted together with the bridge (pons) and the midbrain (mesencephalon) as part of the brain stem (truncus cerebri). The medulla oblongata contains nerve nuclei … Extended Mark
MeaningFunction A disorder of the medulla oblongata is seen, for example, in patients with a so-called bulbar paralysis. In this case the cranial nerves running in the medulla are affected. These have the innervation of the pharyngeal and pharyngeal muscles in common. Accordingly, this clinical picture leads to partial paralysis of the muscles of the … MeaningFunction | Extended Mark
