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NWHSU Physiology I Class 13 Contractility of the Heart Questions and Answers (100% Pass) $12.49   Add to cart

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NWHSU Physiology I Class 13 Contractility of the Heart Questions and Answers (100% Pass)

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NWHSU Physiology I Class 13 Contractility of the Heart Questions and Answers (100% Pass)

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  • October 29, 2024
  • 22
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
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NWHSU Physiology I Class 13
Contractility of the Heart Questions
and Answers (100% Pass)
Sympathetic


✓ Norepinephrine is associated with the (Sympathetic/Parasympathetic)

Nervous System




Sympathetic


✓ Beta 1 Receptors are associated with the

(Sympathetic/Parasympathetic) Nervous System




Parasympathetic


✓ Acetylcholine is associated with the (Sympathetic/Parasympathetic)

Nervous System




Parasympathetic


✓ M2 Receptors are associated with the (Sympathetic/Parasympathetic)

Nervous System




Master01 | October, 2024/2025 | Latest update

, 1|Page | © copyright 2024/2025 | Grade A+

If the sympathetic nervous system acts on the heart the rate of depolarization

will *increase*, Ca2+ conductance will *increase*, the contractility of the

heart will *increase*, and the threshold potential will *decrease*.


✓ If the sympathetic nervous system acts on the heart the rate of

depolarization will (increase/decrease), Ca2+ conductance will

(increase/decrease), the contractility of the heart will

(increase/decrease), and the threshold potential will

(increase/decrease).




Sympathetic


✓ Your heart rate is increasing during cardiovascular exercise. What

nervous system is primarily acting on the heart?




If the sympathetic nervous system acts on the heart the threshold potential

will *decrease* and your heart rate will *increase*.


✓ If the sympathetic nervous system acts on the heart the threshold

potential will (increase/decrease) and your heart rate will

(increase/decrease).




If the parasympathetic nervous system acts on the heart the rate of

depolarization will *decrease*, Ca2+ conductance will *decrease*, the




Master01 | October, 2024/2025 | Latest update

, 1|Page | © copyright 2024/2025 | Grade A+

contractility of the heart will *decrease*, and the threshold potential will

*increase*.


✓ If the parasympathetic nervous system acts on the heart the rate of

depolarization will (increase/decrease), Ca2+ conductance will

(increase/decrease), the contractility of the heart will

(increase/decrease), and the threshold potential will

(increase/decrease).




If the parasympathetic nervous system acts on the heart the threshold

potential will *increase* and your heart rate will *decrease*.


✓ If the parasympathetic nervous system acts on the heart the threshold

potential will (increase/decrease) and your heart rate will

(increase/decrease).




Heart rate. If heart rate increases, contractility increases.


✓ Contractility is directly related to what?




Intracellular calcium


✓ If you are experiencing an increase in heart rate and contractility, it is

occuring due to (intra/extra) cellular calcium




NE
Master01 | October, 2024/2025 | Latest update

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