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  Forebrain, Midbrain and Hindbrain – Easy NEET Notes 18.4.1 Forebrain Forebrain consists of: Cerebrum Thalamus Hypothalamus These are the major parts of the forebrain. Cerebrum Cerebrum is the largest part of the human brain . It controls: Thinking Intelligence Memory Learning Speech Voluntary actions Cerebral Hemispheres A deep groove divides the cerebrum into: Left cerebral hemisphere Right cerebral hemisphere Corpus Callosum Both hemispheres are connected by nerve fibres called: Corpus callosum It allows communication between the two hemispheres. Cerebral Cortex Outer layer of cerebrum is called the cerebral cortex . It is highly folded to increase surface area. It appears grey due to presence of neuron cell bodies. Therefore, it is called Grey Matter . Functions of Cerebral Cortex It contains: Motor areas → control voluntary movements. Sensory areas → receive sensory impulses. Association areas → involved in: Memory Inte...

  Diagram showing conduction of nerve impulse through an axon by movement of sodium and potassium ions. NEET-Level MCQs: Neural Control & Coordination  By- Dr.Sanjaykumar pawar Topic: Impulse Conduction Through Axon (Hard Level) MCQ 1 During depolarisation of an axonal membrane: A. K⁺ ions rapidly enter the axoplasm B. Na⁺ ions rapidly diffuse into the axoplasm C. Cl⁻ ions move outside the membrane D. Na⁺ ions are actively transported outside Answer: ✅ B. Na⁺ ions rapidly diffuse into the axoplasm Explanation: Depolarisation occurs due to opening of voltage-gated Na⁺ channels causing rapid Na⁺ influx. MCQ 2 The resting membrane potential in a neuron is mainly due to: A. Equal permeability to Na⁺ and K⁺ B. Higher permeability to Na⁺ than K⁺ C. Differential distribution of ions across membrane D. Active transport of Cl⁻ ions only Answer: ✅ C. Differential distribution of ions across membrane Explanation: Unequal distribution of Na⁺ and K⁺ ions creates ...

Structure of Neuron – Easy NEET Notes  - Dr.Sanjaykumar pawar  Neuron Neuron is the structural and functional unit of nervous system . It receives, processes and transmits nerve impulses. Neurons are also called nerve cells . Parts of a Neuron 1. Cell Body (Cyton / Soma) Main part of neuron containing the cytoplasm and nucleus . Controls all activities of the neuron. Contains Nissl’s granules . Nissl’s Granules Granular structures present in cytoplasm. Help in protein synthesis . Present in cell body and dendrites. Absent in axon. 2. Dendrites Short, branched fibres arising from cell body. Receive stimuli or nerve impulses. Carry impulses towards the cell body . Important Point Dendrites contain Nissl’s granules . 3. Axon Long fibre arising from cell body. Conducts nerve impulses away from the cell body . Distal end of axon is branched. Axon Terminal Terminal branches end in swollen bulb-like structures called synaptic knobs . Synapt...

  NEET-Level MCQs (Hard) Chapter: Neural Control and Coordination  By- Dr.Sanjaykumar pawar 1. Homeostasis is best defined as: A. Coordination between muscles and bones B. Maintenance of constant internal environment C. Production of hormones by glands D. Transmission of impulses through neurons ✅ Answer: B Explanation: Homeostasis means maintaining stable internal body conditions like temperature, pH, oxygen level, etc. 2. Which of the following systems provides point-to-point rapid coordination? A. Endocrine system B. Circulatory system C. Neural system D. Excretory system ✅ Answer: C Explanation: Neural system uses electrical impulses for fast and precise communication. 3. During physical exercise, increased oxygen demand directly causes: A. Decrease in heartbeat B. Reduced respiration rate C. Increase in respiration rate D. Kidney failure ✅ Answer: C Explanation: More oxygen is needed during exercise, so breathing rate increases. 4. Which s...