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What event stimulates the contraction of cardiac muscle?
The event that stimulates the contraction of cardiac muscle is the electrical signal generated by the sinoatrial (SA) node in the heart, also known as the pacemaker of the heart. This signal causes the heart muscle cells to contract and pump blood throughout the body.
How could you describe the positive feedback system that occurs during labor?
The process of labor is induced by the release of the hormone Oxytocin from the pituitary gland. Oxytocin causes smooth muscle contraction associated with the uterus. Uterine contraction in turn causes the release of more Oxytocin from the pituitary, which causes more contraction. this represents a positive feedback loop of increasing amounts of Oxytocin and uterine contraction. Contractions of the uterus of course result in the movement of the fetus out of the birth canal (leaving the uterus, passing through the cervix, and out through the vaginal opening.
Describe the 'all or nothing' principle of muscle fiber recruitment?
HORRIBLY CONDENSED. An electrical event of sufficient strength from the end of a nerve to pass into a muscle fiber(s) (end plate) resulting fiber(s) tension. The more electrical events 'spikes" per second (rate coding) to a point the greater, to a point, the tension(s).
The chance that a given event will occur usually expressed between the number 0 and 1?
The chance that a given event will occur is typically expressed as a probability, which is a number between 0 and 1. A probability of 0 means the event will not occur, while a probability of 1 means the event will definitely occur. Probabilities between 0 and 1 give us the likelihood of the event happening.
What does causelity mean?
Causality refers to the relationship between cause and effect, where one event (the cause) leads to another event (the effect). It is the concept that events occur in a predictable sequence, with one event being the result of the other.
In a muscle fibre, the key intracellular event that stimulates muscle contraction is known as ?
depolarisation
What event stimulates the contraction of cardiac muscle?
The event that stimulates the contraction of cardiac muscle is the electrical signal generated by the sinoatrial (SA) node in the heart, also known as the pacemaker of the heart. This signal causes the heart muscle cells to contract and pump blood throughout the body.
What specific event initiates the contraction?
The specific event that initiates a muscle contraction is the release of calcium ions within the muscle cell. This triggers a series of chemical reactions that ultimately lead to the sliding of actin and myosin filaments, resulting in muscle contraction.
At the neuromuscular junction, the muscle contraction initiation event is?
binding of acetylcholine to membrane receptors on the sarcolemma
What describes a critical event that occurs at the neuromuscular junction?
A critical event that occurs at the neuromuscular junction is the release of acetylcholine from the motor neuron's axon terminal. This neurotransmitter binds to receptors on the muscle membrane, leading to depolarization of the muscle cell and generation of an action potential, initiating muscle contraction. Dysfunctions at the neuromuscular junction can lead to diseases like myasthenia gravis.
What historical event is an example of economic contraction in the US?
the Great Depression
What is the words or he contraction won't?
"Won't" is a contraction for "will not." Even though the basic verb has an 'i' and the contraction has 'o' they are still related. "Would' is also historically a past tense of "will."
Is this'll a verb or a noun?
It is a contraction of "this" and "will". "This" itself is a noun, and "will" itself is a verb.
What type of potential energy is being used by an athlete sprinting event?
The potential energy being used by an athlete during a sprinting event is primarily chemical potential energy stored in the muscles. This energy is released through the breakdown of ATP (adenosine triphosphate) to provide the necessary energy for muscle contraction and movement.
What event occurs as a result of a muscle action potential?
Reflex action
What events occur when the semilunar valves are open?
The semilunar valves are open when blood is being pumped by ventricular contraction. This event is called systole.
What is the Mechanism of incomplete tetanus and complete tetanus?
When we increase the stimulation frequency until the relaxation phase is eliminated. This event occurs very quick so the sarcoplasmic reticulum does not have time to reclaim the calcium ions. This calcium ion concentration in the cytoplasm couse continuous contraction of the muscle so complete tetanus occurs. Made by Barracuda
