Which best describes the process by which rod cells are activated? light strikes a rod cell at resting membrane potential K* channels open hyperpolarization of rod stops release of an inhibitory neurotransmitter light strikes a rod cell at resting membrane potentialNat channels open depolarization of rod leads to an action potential light strikes a depolarized rod cell stops release of an inhibitory neurotransmitter light strikes a depolarized rod cell release of an inhibitory neurotransmitter light strikes a depolarized rod cell stops release of an inhibitory neurotransmitter А. В. С. Na* channels open hyperpolarization of rod D. K* channels open hyperpolarization of rod stops Е. Nat channels close → hyperpolarization of rod

Q: The opening of axonal voltage-gated K+ channels is responsible for which part of the action…

A: Theses channels locate in cell membranes and control transportation of K +ions efflux from and…

Q: DHP-Ryanodine receptors are: O Mechanically-gated O Voltage-gated O Always open O Ligand-gated…

A: Receptors-these are proteins present on the surface of cells that bind to ligands to cause responses…

Q: How does a voltage clamp work?

A: Information is communicated through neurons. They send information between different parts of the…

Q: Classify the given items with the appropriate group. Voltage-gated sodium channels are opened then…

A: The refractory period is a classical property of an electrically excitable cell, in this case, a…

Q: A neurotransmitter binds to a receptor on a muscle cell and causes sodium channels to open. This is…

A: Facilitated diffusion is a passive transport of ions, which means this process does not need energy…

Q: Action potentials are generated at receptor sites. If you touch an object tha rough, which one of…

A: The signals for senses and movements in the body are generated from the central nervous system…

Q: The "All or None" response means that: A stimulus causes depolarization and repolarization…

A: "All or None " is the phenomenon that a muscle fiber will only contract to its full extent.

Q: Which of the following best describes the behavior of a gated channel? It stays open continuously…

A: There are numerous membrane proteins that function as ion channels throughout the plasma membrane.…

Q: The following were extracellular recordings obtained from the giant nerve fibers of an earthworm…

A: The correct answer to this question is option A. To calculate the action potential conduction…

Q: If depolarization occurs at the neuromuscular junction and threshold is met, then…

A: If depolarization occurs at the neuromuscular junction and threshold is met, then, the…

Q: These sensory receptors when activated result in the movement of both calcium and sodiujm ions…

A: Sensory receptors play a key role in responding to stimuli. They can sense different sensations like…

Q: Action potential frequency in phasic receptors with a prolonged stimulus in tonic receptars with a…

A: The sensory system is composed of sensory receptors that are present at the peripheral ending of the…

Q: The motor end plate is extensively folded to allow for greater number of what structure? Terminal…

A: Motor end plates are called Neuromuscular junctions, are specialized chemical synapses formed at the…

Q: Compared to an action potential, a graded potential is weak and depending on the stimulus strength…

A: Neuron is a vital part of nervous system that is involved in transmission of signal impulse to all…

Q: TRUE OR FALSE   Depolarization of the rod cell membrane causes increased neurotransmitter release.

A: Rod cells release more of their neurotransmitter when they are depolarized. This happens because…

Q: What is the relationship between stimulus strength and the resulting action potential amplitude in a…

A: The correct answer to this question is option B i.e. increasing stimulus strength does not change…

Q: In most neurons, membrane depolarization leads to the opening of voltage-dependent ion channels,…

A: The sense organ that allows vision by reacting to light in humans is the eye. Photoreceptor cells…

Q: Why do different cells respond to the same stimulus in different ways? State three potential…

A: Because every cell has a unique set of signalling pathways, gene expression patterns, and…

Q: Please place the boxes according to cell received stimulus and cel

A: The resting membrane potential explains what happens when a neuron is at rest. An action potential…

Q: Which statement is false? O The muscle spindle forms a monosynaptic connection with the alpha motor…

A: A muscle spindle consists of various different  muscle fibers (intrafusal fibers) that are…

Q: The conduction velocity in nerves is primarily dependent on the O localization of the Na+ / K+ pumps…

A: Nerve conduction velocity (CV) is an important aspect of nerve conduction studies. It is the speed…

Q: What would happen to an insect if you treated an insect with a chemical that inhibits…

A: Acetylcholinesterase Inhibitors:  Acetylcholinesterase inhibitors (AChEIs), also known as…

Q: The plasma membrane of the giant squid axon becomes depolarized in response to action potential.…

A: The giant squid axon is the largest axin present in it. The diameter of the axon is 1.5 mm. The axon…

Q: Which of the following occurs when light activates a photoreceptor? Choose all that apply. Glutamate…

A: Photo receptors are the cells within the retina that react to light. Their recognizing feature is…

Q: Conduction velocity refers to the [a] at which an action potential travels along a neuron's axon. In…

A: Neurons are specialized cells in the nervous system that transmit electrical and chemical signals…

Q: Choose two false statements and explain why? Toxin causes voltage-gated sodium channels to open at a…

A: The toxins present in our body affects the activity of channels present inside the membrane .

Q: hen an action potential arrives at the nerve terminal of a neuromuscular junction, which of the…

A: An action potential is a brief electrical signal that travels along the membrane of a neuron or…

Q: How does lidocaine cause numbness when injected? destroys pain receptors  repolarizes sensory…

A: Lidocaine is a local anesthetic. It works by impeding nerve signals in the body. Lidocaine topical…

Q: Classify the given items with the appropriate group. Neuron is hyperpolarized Occurs when…

A: Relative Refractory PeriodNeuron is hyperpolarized: This occurs during the Relative Refractory…

Q: Activation gates on Na+ channels open; Nat enters cell. Cell receives stimulus. Cell depolarizes.…

A: We know that The resting membrane potential explains what happens when a neuron is at rest. An…

Q: Interruption of spindle discharge from a muscle causes contraction of the muscle to become jerky and…

A: Muscle spindle is small, spindle-shaped sensory receptors located in skeletal muscle tissue and they…

Q: What channels are open at 3 if this was recorded on the axon of a sensory neuron? Check all that…

A: The neurons or nerve cells have the capacity to conduct electricity in the form of action potential.…