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Does sympathetic stimulation of the heart increases heart rate and force contractions?
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What does epinephrine do to the blood vessels?
Sympathetic stimulation (I'm guessing you mean your bodie's reaction in fight or flight) makes the blood vessles tighten, or constrict, hightening blood pressure. This is bad for you over long periods of time.
What happens if the heart receives more sympathetic stimulation than parasympathetic stimulation?
increase its rate and force of contraction
Which nervous system division controls smooth muscle contraction and secretion in the digestive system?
Autonomous nervous system. Consisting of Parasympathetic nervous system and Sympathetic nervous system. Parasympathetic nervous system increases the secretions of digestive tract and Sympathetic system decreases the secretions. Parasympathetic system increases the contractions of smooth muscles and increases the rate and force of peristalsis and Sympathetic system does vise verse.
What are two experimental ways that the mode of stimulation can affect the muscle force?
Isotonic and Isometric Contractions
Why are isotonic and isometric contractions two experimental ways that the mode of stimulation can affect the muscle force?
ask you doctor
What two mechanisms influence the force of cardiac contraction?
End diastolic volume and sympathetic nervous system stimulation
What is the sympathetic effect on the heart?
Heart rate increases with sympathetic nervous system. There is increase in stroke volume and cardiac output. With stimulation of vagus nerve or parasympathetic nervous system, You have decrease in heart rate. There is decrease the stroke volume and cardiac output.
How does the frequency of stimulation affect the amount of force generated by the muscle?
Increasing the stimulus to an isolated muscle increases the strength of a contraction. A muscle begins to contract when the stimulus is given; however, if the muscle does not finish contracting before the next stimulus hits, then the force of the contraction will increase to finish the contraction. This is known as wave summation.
What is the rhymic contraction of the lining of the gastrointestinal tract called?
The rhythmic contractions of tubular organs, such as the esophagus or intestine, are called peristaltic waves. These waves propel the food material forwards. They are automatic due to local nerve plexus. The peristaltic waves increase in rhythm and force due to stimulation by the parasympathetic autonomic nervous system, and decrease due to stimulation by the sympathetic autonomic nervous system.
What happenes to the force when the mass increases?
When the mass increases then the force also increases
What is the difference between inotropic and cronotropic?
Inotropic refers to the force of contraction of the heart muscle, while chronotropic refers to the heart rate. Inotropic agents affect the strength of the heart's contractions, while chronotropic agents affect the heart rate.
How is the acceleration of a mass changes if the force applied to it increases or decreases?
Acceleration increases when force increases and decreases when force decreases.
