Name: Meiosis: The Reductional Division
Uploaded: 2019-07-19
Duration: 13 min 33 s
Description: Meiosis involves cell division, which results in the formation of four daughter cells, each with half the number of chromosomes compared to the single parent.

Question

Whenever you touch a hot object, you remove your hand immediately. Why do you do so? Which cells take part in this process?

Accepted Answer

When you touch a hot object, you instinctively remove your hand immediately due to a protective response known as the withdrawal reflex. This rapid action is a crucial defence mechanism to prevent injury from excessive heat.

The process involves various cells and neural pathways.

Thermal Receptors: Specialised sensory receptors in your skin, known as thermoreceptors, detect changes in temperature. When these receptors sense extreme heat, they send signals to your nervous system.

Nerve Cells (Neurons): Sensory neurons, a type of nerve cell, transmit the signals from the thermoreceptors to your spinal cord and then to your brain.

Spinal Reflex: In many cases, the response is a spinal reflex, which means that your spinal cord processes the information and initiates a motor response without involving the brain. This speed allows for a quick reaction to remove your hand from the hot object.

The withdrawal reflex is a protective mechanism designed to minimise the duration of contact with a harmful stimulus, like a hot object. It helps prevent burns and injuries by causing an immediate and involuntary response to move the affected body part away from the source of heat or danger.

Whenever you touch a hot object, you remove your hand immediately. Why do you do so? Which cells take part in this process?

Important Questions on Cell: Structure and Functions

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