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A Stimulus is a feature of the environment that your body can detect

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13y ago

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What is the internal stimulus for a cell to divide?

claustrophobia


What is a protective response to a stimulus?

Metaplasia (refferig to a cell)


If a muscle cell receives a second stimulus while it is contracting will it respond to the second stimulus?

no because it doesnt want to


What period is it when a cell is unable to accept another stimulus?

refactory period


What is the relationship between a stimulus and a response?

A response is always triggered by a stimulus. One example is in a neuron (nerve cell). Once a sensory stimulus is witnessed (a stimulus from one of the 5 senses), the cell hits an action potential, and the response is carried out. Simply put: A human eye is closed. Once the eye opens thousands of sensors in the eye pick up the photons bouncing off all objects (stimulus), and the human is able to see (response).


Movement of a cell toward a chemical stimulus is termed?

positive chemotaxis


What happens when a stimulus activates a receptor?

The activation of a second messenger inside the receiving cell, the triggering of enzyme activity in the cell, and the change of permeability of the cell.


What is the difference between the effective refractory period and the relative refractory period?

-The effective refractory period is the time in which the cell is incapable of responding to a second stimulus between the phases of 0-3.5, while the relative refractory period is the time in which the cell is making preparations to receive stimulus between phase 3.5-4.


Given that action potentials traveling down the axon of a particular neuron are always the same amplitude how is a stronger stimulus communicated to the next cell in the neural pathway?

A stronger stimulus is communicated to the next cell in the neural pathway by increasing the frequency of action potentials generated by the neuron. A stronger stimulus will trigger action potentials to occur more frequently, which results in a higher frequency of signals being transmitted to the next cell.


Immediately following the arrival of the stimulus at a skeletal muscle cell there is a short period called?

The short period following the arrival of a stimulus at a skeletal muscle cell is called the latent period. During this time, the muscle cell is preparing for contraction by releasing calcium ions and activating the contractile proteins.


The cell that initiate the stimulus for contraction of the heart muscles are located in the?

The SA Node in the right atrium


What is the transmission of the stimulus at the neuromuscular junctions involves?

The transmission of the stimulus at the neuromuscular junction involves the release of acetylcholine from the motor neuron, binding to acetylcholine receptors on the muscle cell membrane, causing depolarization of the muscle cell, and ultimately leading to muscle contraction.