of the symptoms of Parkins on\'s dise The symptoms of Huntington\'s disease are
ID: 3478578 • Letter: O
Question
of the symptoms of Parkins on's dise The symptoms of Huntington's disease are in many respects the opposite Huntington's disease is characterized by: involuntary, continuous movement of the and face. Often these movements resemble pieces of adaptive movements behavioral signi 19. Wha body, especially of the extr of adaptive movements, but they occur involuntarily and w ficance. Huntington's disease results from the selective loss of striatal neurons. t three structures form the diencephalon? What type of functions are associated with each component? The medulila oblongata is one of the smallest sections of the brain, yet damage can be fatal, whereas simldamage to the cerebrum might go unnoticed. Why? 20. What is decussation of pyramids? 21. What are the general functions attributed to the thalamus? 22. What is the major control center for the autonomic 23. What are the functions of the cerebellum? CLINICAL CONCEPT: direction of the movement. The movements and speech of people afflicted with ataxia may is intoxicated. This condition is also characterized by intention tremor, which differs from the r disease. People with cerebellar damage may reach for then, they will attempt to compensate by moving their hand in the opposite direction. nervous system and endocrine system? to the cerebellum produces ATAXIA lack of coordination resulting from errors in the speed and resemble those of someone who esting tremor of Parkinsom right; back and forth movement can an object and miss it by placing their hand too far to the left or This result ion oscillation of the limb. 21. Identify the structures of the limbic system and explain the functional significance of this system 22. What is reticular activating system [RAS]? ldentify the parts of the brain involved in the RAS. What is the role of this system?Explanation / Answer
19. Diencephalon is the part of forebrain located between cerebrum and the midbrain. It encloses a cavity called third ventricle. Roof of this cavity is called epithalmus and it's floor is called hypothamus and it's sides are called as thalmus.
Epithalmus is folded anteriorly and this folded area is called anterior choroids plexus. Behind this plexus is small stalk called pineal stalk bearing pineal gland at its tip. Below hypothamus is a rounded body called pituitary gland held by a grayish outgrowth called infindibulum.
Functions;
1. Anterior choroid plexus secretes cerebrospinal fluid.
2. Pineal gland secretes melatonin and serotonin.
3. Pituitary secretes 10 important hormones .
4. Hypothalmus is the centre- for emotions ,sweating,fatigue, sleep,thirst, hunger etc.
Medulla controls some important reflexe centres- such as centres- for respiration, circulation and digestion. It has reflex centre- for swallowing ,coughing,sneezing, vomitting, salivation etc. This damage to this portion of brain is fatal.
20. Motor fibers of corticospinal and corticobular regions are together called as pyramidal tracts. These tracts cross into anterior median fissure of medulla oblongata at the junction of medulla and spinal cord. This crossing of nerve tracts is called as decussations of pyramids.
21. Thalmus relays sensory impulses except smell and regulates smooth muscle activity.
23.Major functions of cerebellum are;
1. Coordinates muscle movement.
2. Maintains equilibrium of body during different activities like walking, jumping, running etc.
3. Modulates voluntary movements initiated by cerebral cortex.
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.