Question

QUESTION 25 The right and left cerebral hemispheres are connected by A The thalamus B.the best The basalgia D. The corpus callosum QUESTION 26 Hydrocephalus in canned by A a blockage in the normal flow of CSF (cerebrospinal fluid) B. Inflammation of the time rounding the brain C. cutting the corpus callosum Desis is the prefrontal cortex

Answer 1

Question 25

Answer: Brain consists of two cerebral hemispheres, left and right. These two cerebral hemispheres are connected by corpus callosum which is structure that consists of bundle of nerve fibers. Hence, option D is the correct answer. Thalamus is located just above the posterior part of the brain called brain stem. Basal ganglia are the structures that are located very deep in the cerebral hemispheres. Hence, Option A, B, and C are incorrect.

Question 26

Answer: Hydrocephalus is condition that occurs due to imbalance between the amount of cerebrospinal fluid production and its absorption in the blood stream. In new borns, hydrocephalus occurs due to blockage of a normal of flow of CSF in the narrow passage between third and fourth ventricles of the brain. Hence, the correct answer is option A. Inflammation of brain tissues is causes Encephalitis and the cutting of the corpus callosum causes callosal syndrome or split brain. Lesions in prefrontal cortex causes defects in social emotions. Hence, options B, C and D are incorrect.

Question 27

Answer: Thalamus consists of large mass of grey matter that is located deep in the forebrain (dorsal part of diencephalon). Hence, option A is the correct answer and B, C and D are incorrect.

Question 28

Answer: Parkinson's disease is caused by cell death or damage to the neurons in the basal gangila, substantia nigra and accumulation of Lewy bodies. Hence, option A is the correct answer. Damage in the thalamus, middle cortex and VTA doesn't cause Parkinson's disease. Hence, options B, C, and D are incorrect.