in the cardiac His-purkinje system , why do more polarized cells conduct electrical signals more quickly

Q: Outline two mechanisms by which information flowbetween two neurons in an adult can increase.

A: Neurons are the structural and functional units of the nervous system. The flow of information from…

Q: How do alterations in L-type channel gating properties cause cardiac arrhythmias and sudden death

A: L-type calcium channels are essential for cardiac myocytes' excitation-contraction coupling,…

Q: Explain why p-wave amplitudes outside the normal range may still be 'normal'?

A: ECG is a recording of the action potential by all the heart muscle fibers during each heartbeat.One…

Q: S9).

A: As we know The neurons communicate just with each other by propagating action potentials of it.…

Q: Why is the gap junctions between heart muscle cells play a relevant role in producing a regular…

A: Only the heart contains cardiac muscle tissue. Cardiac muscle contractions are well-coordinated,…

Q: Subject: Neurophysiology  Many people thought that the inwardly rectifying K+ channel allows K to…

A: Movement of ions through specific ion channels in the membranes of specialized cells like the…

Q: You are recording the electrical activity of a cell body with a resting membrane potential of -70…

A: Given; Resting membrane potential of the cell= -70mV No. of stimuli detected by the cell= 3 from…

Q: How are potentials measured in excitable tissues?

A: An excitable tissue responds to the stimulation and contracts to provide movement. They are capable…

Q: The action potential is split into 4 parts (A-D). For each part, 1. Describe what stimulated the…

A: The term "Action Potential" refers to a quick brief rise in Membrane potential (Negative to…

Q: the two immune cells that are temporarily regulated in a peripheral injury response by CNS

A: Answer: The nerve cell body itself reacts to axonal injury in a predictable fashion. Within 6 hours…

Q: Which channels are open during the depolarizing phase? During the repolarizing phase?

A: The nervous system is responsible to control and coordinate different functions of the body. The…

Q: 24. When given an image of a cardiac contractile cell, such as the one belo describe the steps that…

A: The muscle contraction in the cardiac muscles depends on actin and myosin introduction. Calcium ions…

Q: in neurons when cl- influx into the axoplasm through chloride channel, hyperpolarization could…

A: Neurons conduct electrical impulse by using action potential, which is generated through flow of…

Q: The follwoing location is the sponal nerve: select one: a b c d e f g h

A: The spinal cord extends from the base of the brain through a large opening in the skull called the…

Q: A patient is displaying an abnormally low increase in stroke volume in response to exercise. Put…

A: let's delve deeper into each of these cellular mechanisms:Impaired Contractility of…

Q: when calculating the Resting membrance potential using the goldman equation it is usally out, out…

A: The Goldman equation is often used to determine the resting membrane potential of a cell.  It…

Q: Activation of what receptor directly causes stimulation of the heart? a-1 a-2 B-1 B-2 B-3

A: Mostly all blood vessels have both alpha and beta receptors. In general, Alpha-adrenergic receptors…

Q: Which type of channels are found more prominently at the axon initial complex? Which ones found in…

A: Neurons also known as nerve cells, send and receive signals from brain.The nerve cell consists of…

Q: How do depolarize, repolarize, and hyperpolarize describe the direction of changes in the membrane…

A: The resting potential is the membrane potential of the cell membrane in its non excitable resting…

Q: what is the difference between somatic and visceral efferent?

A: Neurons which are also termed as the nerve fibres are the basic, structural and fundamental unit of…

Q: What happens if the depolarization does or does not reach the threshold?

A: Depolarization is shift in the neuron membrane potential from positive to negative. In response to…

Q: Whats is contiguous conduction?

A: The nervous system functional unit is nerve or neuron. Neurons classified into three types based on…

Q: If postsynaptic membrane permeability is increased, is theneuron more easily stimulated or less…

A: The permeability of a cell refers to the transportation of ions that occurs through the cell…

Q: What makes an action potential rise to +35 mV? What makes it drop again after this peak?

A: Action potential is defined as the sudden change in the resting membrane potential in the neurons…

Q: After an action potential has been initiated, there are two processes that prevent the membrane from…

A: The generation of action potential is very much important characteristics in nerve cells that is…

Q: Why is it expected that input resistance and rheobase in a neuron would be very less correlated

A: The rheobase is operationally defined as the minimal electrical current that is necessary to…

Q: How might a mutation in a cardiac voltage-dependent sodium channel cause long QT syndrome?

A: The congenital long QT syndrome (LQTS) is an inherited disease characterized by a prolonged cardiac…

Q: Why is hyperpolarization important

A: The cell is the basic structural and functional unit of any living organism. It is the smallest unit…

Q: Why, in physiological terms, does heart rate increase during exercise? Discuss contributions from…

A: Heart rate is the average number of times per minute that the heart beats. For adults, this ranges…

Q: (HBS 2.2.2) Match the letter to the correct structure name. -A ‚B re-uptake E Y D F Y : Receptor…

A: “Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: People with paroxysmal atrial tachycardia (commonly called "palpitations") are sometimes given drugs…

A: Voltage gated calcium  channels allow the entry calcium into plasma membrane. Inside the calcium…

Q: +20- +10 1 Pk; IPca, L Self-induced È of action potential - 10 -20 -30- Pca", L; i Pca,T Threshold…

A: The heart is responsible foe pumping of blood in the body. The blood is pumped due to rhythmic…

Q: Give two similarities between the A-V nodal cells and the Purkinje fibres

A: There is a sequence of electrical events that occur inside the heart during the full contraction of…

Q: Define repolarization phase

A: The sudden and propagating change in the resting membrane potential mainly found in neurons and…

Q: Which of the following occurs at this point of the membrane potential (marked by the black arrow) in…

A: There are 4 phases of cardiac conduction. Phase 0 is the depolarization state where the sodium…

Q: A drug that blocks the cardiac muscarinic receptor might be expected to: Increased heart rate…

A: Cardiac muscarinic antagonists are the agent that inhibits the function of the muscarinic receptors.…

Q: Which branch of the autonomic nervous system innervates blood vessels? Which layer of the blood…

A: In vertebrates, the nervous system is of two major types. They are the central nervous system (CNS)…

Q: What is the excitationthreshold of a neuron? Howdoes this threshold relate tothe “all-or-nothing”…

A: Neurons, also known as nerve cells are the fundamental unit of brain and nervous system. They are…

Q: What effect does sympathetic stimulation have on stroke volume if thevenous return remains constant?…

A: Most blood vessels, including those in the skin, the digestive tract, and the kidneys, constrict…

Q: Explain why the second phase of the chymotrypsin mechanism slower than the first phase

A: Chymotrypsin is a zymogen that remains in the inactive stage and gets activated only when peptide…

Cell Signaling

It allows cells to perform various cellular activities, coordinate, and interact with other cells. All cells of an organism receive signals from their environments and respond accordingly. Even the unicellular eukaryotes receive signals secreted by other cells and respond. In the case of yeast, mating takes place by signaling between the yeast cells. Communication by cell signaling in a multicellular organism has become a vast and important part of various fields of biology.