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Questions and Answers
What is the electrical signal transmitted across the cell membrane?
What is the electrical signal transmitted across the cell membrane?
- Neural pulse (correct)
- Electromagnetic wave
- Sound wave
- Heat wave
What is the electrical signal generated when?
What is the electrical signal generated when?
- The cell is not functioning
- The cell membrane potential changes due to signals (correct)
- The cell membrane is damaged
- The cell is dead
Where does the electrical signal originate from?
Where does the electrical signal originate from?
- The cell membrane
- The mitochondria
- A neighboring cell (correct)
- The nucleus of the cell
What is the term used to describe the electrical signal?
What is the term used to describe the electrical signal?
What happens to the electrical signal when it reaches the cell membrane?
What happens to the electrical signal when it reaches the cell membrane?
What are the basic units responsible for receiving, processing, and transmitting information in the brain and nervous system?
What are the basic units responsible for receiving, processing, and transmitting information in the brain and nervous system?
What is the function of nerve cells in the nervous system?
What is the function of nerve cells in the nervous system?
What is the electrical charge that travels along the membrane of a neuron called?
What is the electrical charge that travels along the membrane of a neuron called?
What is the role of sensory inputs in the nervous system?
What is the role of sensory inputs in the nervous system?
What is the process by which nerve cells convert sensory inputs into electrical signals?
What is the process by which nerve cells convert sensory inputs into electrical signals?
What is a possible effect of electric shock on the muscles?
What is a possible effect of electric shock on the muscles?
Which of the following is a severe side effect of electrical shock?
Which of the following is a severe side effect of electrical shock?
What can electrical shock cause in the brain?
What can electrical shock cause in the brain?
What is a possible outcome of electrical shock?
What is a possible outcome of electrical shock?
What can electrical shock affect?
What can electrical shock affect?
What can happen to the body along the path of the electrical current?
What can happen to the body along the path of the electrical current?
What does the acronym LASER stand for?
What does the acronym LASER stand for?
What is the basic principle behind lasing action?
What is the basic principle behind lasing action?
Which particles are atoms primarily composed of?
Which particles are atoms primarily composed of?
What happens during stimulated emission in lasers?
What happens during stimulated emission in lasers?
What initiates the lasing action in a laser?
What initiates the lasing action in a laser?
Which of the following statements is NOT true about lasers?
Which of the following statements is NOT true about lasers?
How many positive charges does Sodium have?
How many positive charges does Sodium have?
Which of these elements has a negative charge?
Which of these elements has a negative charge?
How many positive charges does Calcium have?
How many positive charges does Calcium have?
Which of the following is NOT a part of the central nervous system?
Which of the following is NOT a part of the central nervous system?
What is the function of the nervous system?
What is the function of the nervous system?
Study Notes
Laser
- LASER is an acronym for Light Amplification by Stimulated Emission of Radiation
- The basic principle of lasing action is the stimulated transition of an electron in a high energy level to a lower one, emitting a photon with the same properties as the incident photon that initiated the transition
Atomic Structure
- Atoms are made up of electrons, protons, and neutrons
- Protons have a positive charge, and neutrons have no charge
- Electrons can move from a high energy level to a lower one, emitting a photon in the process
Nervous System
- The nervous system can be divided into two parts: the central nervous system (CNS) and the peripheral nervous system (PNS)
- The CNS consists of the brain and spinal cord neurons
- The CNS receives and processes sensory information from the environment and sends motor signals to muscles and glands
- The PNS transmits information between the CNS and the rest of the body
Action Potential
- An action potential, also called a nerve impulse, is an electrical charge that travels along the membrane of a neuron
- It is generated when the electrical properties of the neuron's membrane change
- Action potentials can be triggered by signals from neighboring neurons or sensory receptors
Electrical Signals
- Electrical signals can be generated by the eye and other sensory organs
- Electrical shock can cause a range of effects, from mild to severe, including:
- Headache
- Muscle fatigue or spasms
- Temporary unconsciousness
- Temporary breathing difficulty
- More severe and potentially fatal side effects of electrical shock include:
- Severe burns
- Vision loss
- Hearing loss
- Brain damage
- Respiratory arrest or failure
- Cardiac arrest (heart attack)
- Death
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Description
This quiz covers the basic principle of lasing action, including stimulated transition of an electron and emission of a photon. Learn about LASER technology and its applications in medical physics.
