Control and Coordination in Animals
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Questions and Answers

What is responsible for sudden responses to stimuli in animals?

  • Endocrine system
  • Receptors
  • Nervous system (correct)
  • Hormones
  • Which system in humans produces and secretes hormones for control and coordination?

  • Circulatory system
  • Digestive system
  • Endocrine system (correct)
  • Respiratory system
  • What are the five sense organs responsible for in the human body?

  • Muscle movement
  • Receiving information from the environment (correct)
  • Coordination
  • Hormone production
  • Which part of the body consists of nerve fibres and nerve cells for transmitting impulses?

    <p>Nervous system</p> Signup and view all the answers

    What is the primary function of the nervous system in animals and humans?

    <p>Transmitting impulses between body parts</p> Signup and view all the answers

    What is the structural and functional unit of the nervous system?

    <p>Neuron</p> Signup and view all the answers

    What is the function of the Central Nervous System?

    <p>Coordinates voluntary functions</p> Signup and view all the answers

    Which part of the neuron transmits nerve impulses towards the cell body?

    <p>Axon</p> Signup and view all the answers

    Which part of the brain is responsible for control and coordination of voluntary functions?

    <p>Forebrain</p> Signup and view all the answers

    What is the main function of the Peripheral Nervous System?

    <p>Connect sense organs to the brain</p> Signup and view all the answers

    Study Notes

    Control and Coordination

    • Control and coordination in humans involve the nervous system and the endocrine system that produce and secrete hormones.
    • The five sense organs in our body, eyes, ears, nose, tongue, and skin are called receptors and receive information from the environment around us.

    Nervous System

    • The nervous system consists of nerve fibers and nerve cells that transmit impulses between different parts of the body.
    • It synchronizes functions by passing signals to and from different parts of the body.
    • It detects physical responses on any part of the body due to various changes such as temperature, pressure, light, etc.

    Neuron

    • The neuron is the structural and functional unit of the nervous system.
    • It receives and transmits electrical nerve impulses.
    • A neuron comprises:
      • Cell body consisting of a nucleus and granular cytoplasm called Nissl's granules.
      • Dendrites are several branched, finger-like projections that transmit nerve impulses towards the cell body.
      • Axon arises from the cell body, branched at the distal end.
      • Schwann cells in the axon are covered by a myelin sheath.
      • Space between the myelin sheath is known as Nodes of Ranvier.
      • End of the axon contains bulb-like structures called the Synaptic Knob.

    Parts of the Nervous System

    Central Nervous System

    • Consists of the brain and spinal cord.
    • Generates sensory emotions, thoughts, and emotions, leading to the formation of memories.
    • Gathers information from all over the body and synchronizes its activity accordingly.
    • Controls the rate at which we breathe, heart rate, body temperature, etc.

    Peripheral Nervous System

    • Consists of nerves and everything that goes down the spinal cord.
    • Brings information from all parts of the body to the brain.
    • Includes nerves connecting sense organs, organs, blood vessels, etc. to the CNS.

    Organs of the Human Nervous System

    • Brain: controls all the actions of the body, receives signals from sensory organs.
      • Comprises of three parts:
        • Forebrain: controls and coordinates all voluntary functions, thinking part of the brain.
        • Midbrain: transmits signals from hindbrain and forebrain, controls movement and balance.
        • Hindbrain: connects and coordinates all parts of the brain.

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    Description

    Explore how animals regulate responses to stimuli, from falling asleep to reacting quickly to dangers. Learn about the system responsible for these actions.

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