Brain Structures & Neural Coordination — NEET Biology
📚 Practice ConceptWrite short notes on the following: (a) Neural coordination (b) Forebrain (c) Midbrain (d) Hindbrain (e) Synapse
Which of the following statements concerning the human brain stem are NOT correct? S1: The brain stem comprises the midbrain, pons, and cerebellum, acting as the primary link between the brain and spinal cord. S2: As a central neural system component, it forms the critical connection enabling communication between the brain and spinal cord. S3: The medulla oblongata, a constituent part of the brain stem, is primarily responsible for the coordination of balance and posture. S4: Vital centers for regulating respiration, cardiovascular reflexes, and gastric secretions are located within the medulla oblongata. S5: The brain stem is also the principal site for processing vision, hearing, speech, memory, and higher cognitive functions.
View solution & NCERT explanation
Correct answer: B — S1, S3, and S5
The core concept tested is the composition and functions of the brain stem as defined in the NCERT text. S1: Incorrect. The brain stem comprises the midbrain, pons, and medulla oblongata, not the cerebellum. The cerebellum is part of the hindbrain but is not considered part of the brain stem. (Page 236, Para 4, Line 4; Page 237, Summary, Lines 14-15) S2: Correct. The brain stem is indeed a part of the central neural system (CNS) and forms the connection between the brain and spinal cord. (Page 231, Para 4, Line 4; Page 236, Para 4, Line 5) S3: Incorrect. Coordination of balance and posture is primarily a function of the cerebellum. The medulla oblongata contains centres for respiration, cardiovascular reflexes, and gastric secretions. (Page 236, Para 4, Lines 2-3) S4: Correct. The medulla contains centres which control respiration, cardiovascular reflexes, and gastric secretions. (Page 236, Para 4, Line 3) S5: Incorrect. Processing of vision, hearing, speech, memory, intelligence, emotions, and thoughts are primarily functions of the cerebrum, which is part of the forebrain, not the brain stem. (Page 235, Para 2, Lines 6-9) Therefore, statements S1, S3, and S5 are NOT correct. Recap: This question distinguishes the components and primary functions of the brain stem from other brain regions and general CNS/PNS classifications.
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Through deep analysis of NEET and NTA, 176 of the 180 ReNEET 2026 (June 21) questions were already in the MedicNEET question bank before the exam.
176/180MedicNEET's Biology question bank is built from the same NCERT lines NTA picks repeatedly. Not random MCQs — questions crafted exactly like NTA crafts them.