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  Transmission of Nerve Impulses — Easy NEET Notes  By - Dr.Sanjaykumar pawar 18.3.2 Transmission of Impulses 1. What is a nerve impulse? A nerve impulse is an electrical signal that travels through a neuron. It helps in communication between different parts of the body. 2. What is a Synapse? A synapse is the junction between two neurons. Through this junction, nerve impulses pass from one neuron to another. Structure of Synapse A synapse is formed by: Pre-synaptic neuron → neuron sending the impulse Post-synaptic neuron → neuron receiving the impulse Synaptic cleft → small gap between the two neurons Types of Synapses A. Electrical Synapse Features Pre- and post-synaptic membranes are very close. Electrical current flows directly from one neuron to another. Impulse transmission is very fast. Important Points Similar to impulse conduction along one axon. Faster than chemical synapse. Rare in humans. NEET Point No neurotransmitter is re...

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...

  https://bioteacher-iq.blogspot.com/ Chapter 18: Neural Control and Coordination Easy NEET Notes (Line by Line Explanation) Introduction Our body has many organs like heart, lungs, kidneys, muscles etc. All these organs must work together properly. This is called coordination . What is Coordination? Definition Coordination means: Two or more organs work together They help each other perform functions properly It maintains balance inside body ( homeostasis ) Homeostasis Maintenance of constant internal environment Example: Normal body temperature Normal blood pressure Proper oxygen level Example of Coordination During Exercise When we do physical exercise: Step 1: Muscle activity increases Muscles need more energy Step 2: Oxygen demand increases More oxygen is required to produce energy Step 3: Respiration rate increases Lungs work faster Breathing rate increases Step 4: Heartbeat increases Heart pumps blood faster Step 5: Blood flow incr...