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Nerves are bundles of axons and their sheaths of connective tissue that extend from the CNS to peripheral structures,

Nerves are responsible for stimuli communication and responce

The Central nervous system CNS

  1. Brain
  2. Spinal Cord

The Prephrial nervous system PNS

  1. Cranial nerves, which arise from the brain
    • Sensory/ afferent transmits STIMULI from the sensory organs to the CNS
    • Motor/ efferent-transmits action potentials from the CNS to effector organs when a Stimuli is recieved causing some sort of reaction.
  2. Spinal nerves, which arise from the spinal cord

If the sensory Stimuli was an itch on the tip of your nose the motor action potential generated would send your hand to your nose to scratch the itch.

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Loyal Mayert

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3y ago

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In the reflex arc a muscle or gland is considered to be the?

In the reflex arc, a muscle or gland is considered to be the effector. Its role is to respond to the stimulus provided by the sensory neuron and produce the appropriate action, such as muscle contraction or gland secretion.


In this reflex action the muscle acts as the ....?

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What is effector muscle for calcaneal reflex action?

The effector muscle for the calcaneal reflex (also known as the Achilles reflex) is the gastrocnemius muscle in the calf. When the Achilles tendon is tapped, it causes a contraction of the gastrocnemius muscle, resulting in plantar flexion of the foot.


What will happen if the arm's reflex action in these body part do not work?

If the arm's reflex action does not work, it can impact the body's ability to respond quickly to potential dangers. This could result in decreased coordination and slower reaction times when trying to protect the body from harm. It may also affect muscle tone and strength in the arm.


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A rapid simple automatic response that involves few neurons is?

A reflex action is a fast, automatic response to a stimulus by an effector organ i.e. a muscle.


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No, plucking a flower is not a reflex action. Reflex actions are involuntary and automatic responses to stimuli, such as pulling your hand away from a hot surface. Plucking a flower involves conscious decision-making and voluntary muscle movement, as it requires intention and awareness of the action being taken.


What happens in the path of a reflex action?

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