In the stretch-shortening cycle (DVZ), an eccentric stretch of a muscle is followed by a concentric contraction of the same muscle, which conserves energy and uses the kinetic energy from the stretch. The DVZ plays an important role in reactive movements and is triggered by muscle flexibility and the stretch reflex. Disorders of the cycle … Elongation-shortening Cycle: Function, Tasks, Role & Diseases
Neurodegenerative diseases are diseases whose main characteristic is the progressive death of nerve cells. Among the best known are Alzheimer’s disease, Parkinson’s disease, and amyotrophic lateral sclerosis (ALS). In addition, rarer diseases such as Creutzfeldt-Jakob disease and Huntington’s disease fall into this group. What are neurodegenerative diseases? Neurodegenerative diseases usually occur at an older age … Neurodegenerative Diseases: Causes, Symptoms & Treatment
Dystonia is a muscle contraction that cannot be consciously controlled and lasts for a long time. It can occur regardless of a person’s age. Therapeutic approaches to treating symptoms are based on the form of dystonia and an affected person’s symptoms. What is dystonia? Dystonia is a nerve disorder characterized by the occurrence of involuntary … Dystonia: Causes, Symptoms & Treatment
Positron emission tomography represents a nuclear medicine diagnostic procedure for evaluating metabolic processes within the human organism. The procedure is used primarily in oncology, cardiology, and neurology. What is positron emission tomography? Positron emission tomography is used in particular for the diagnosis and early detection of tumor diseases such as prostate cancer, thyroid and bronchial … Positron Emission Tomography: Treatment, Effects & Risks
Motor function is divided into gross motor function and fine motor function. Gross motor skills are the basis of spatial orientation and summarize large movements of the body. Gross motor skills are movement coordination and reaction skills. Fine motor skills refer to dexterity of the hands, facial expressions, and oral motor skills. Gross motor and … Motor Function: Function, Tasks, Role & Diseases
Hydrogen bonding is an interaction between molecules that resembles Van der Waals interactions and occurs in the human body. The bond plays a role primarily in the context of peptide bonds and chains of amino acids in proteins. Without hydrogen bonding ability, an organism is not viable because it lacks vital amino acids. What is … Hydrogen Bonding: Function, Task & Diseases
The term prenatal diagnostics covers various examinations that take place during pregnancy. They deal with the early detection of diseases and maldevelopments of the unborn child. What is prenatal diagnostics? The term prenatal diagnostics covers various examinations that take place during pregnancy. Prenatal diagnostics (PND) refers to medical examination procedures and devices that deal with … Prenatal Diagnostics: Treatment, Effects & Risks
The term dysarthria covers a range of disorders in speech. Writing, reading, grammar and language comprehension are not affected. Only the motor function of speech is disturbed due to impairment of cranial nerves or damage to the brain. What is dysarthria? Speaking is a highly complex interaction of more than a hundred muscles, the larynx, … Dysarthria: Causes, Symptoms & Treatment
Every year, around 200,000 people in Germany fall ill with dementia. The greatest risk factor for suffering from dementia is age; of those over 90, almost a third are affected by dementia. There are various causes for dementia, most forms are not curable. However, since there are also forms of dementia which can be completely … How do I recognize dementia?
How do I recognize Lewy Body Dementia? Lewy Body Dementia is a mixed cortical and subcortical dementia. Typical for this form of dementia is a variable course with good and bad days. It can lead to misperceptions of vision and Parkinson-like symptoms such as trembling of the hands or muscle stiffness. How do I recognise … How do I recognize Lewy Body Dementia? | How do I recognize dementia?
The ansa cervicalis (profunda) or cervical nerve loop lies beneath the sternocleidomastoid muscle and contains fibers from cervical spinal cord segments C1 to C3. It is responsible for controlling the lower hyoid (infrahyoid) muscles and can lead to the development of dysphagia when lesioned. What is the ansa cervicalis? The ansa cervicalis is a loop … Ansa Cervicalis: Structure, Function & Diseases
Preimplantation genetic diagnosis is the term used by physicians to describe molecular genetic testing. This involves research into hereditary diseases or abnormalities in the chromosomes of embryos created through artificial insemination. What is preimplantation genetic diagnosis? Preimplantation genetic diagnosis (PGD) is medical research performed on embryos conceived through artificial insemination. Preimplantation genetic diagnosis (PGD) is … Preimplantation Genetic Diagnosis: Treatment, Effects & Risks