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What stimulates cardiac muscle to contract? O The conduction system. O Signals from the spinal cord. O Hormones and involuntary signals from the nervous system O Homones only

What stimulates cardiac muscle to contract? O The conduction system. O Signals from the spinal cord. O Hormones and involuntary signals from the nervous system O Homones only

Human Anatomy & Physiology (11th Edition)
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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**Question: What stimulates cardiac muscle to contract?** Options: - ○ The conduction system. - ○ Signals from the spinal cord. - ○ Hormones and involuntary signals from the nervous system. - ○ Hormones only.
Transcribed Image Text:**Question: What stimulates cardiac muscle to contract?** Options: - ○ The conduction system. - ○ Signals from the spinal cord. - ○ Hormones and involuntary signals from the nervous system. - ○ Hormones only.
**Question: What stimulates smooth muscle to contract?** - O Hormones. - ● Hormones and involuntary signals from the nervous system. - O The conduction system. - O Signals from the somatic nervous system. *Explanation:* This multiple-choice question asks what triggers the contraction of smooth muscle. The correct answer, highlighted with a red dot, is "Hormones and involuntary signals from the nervous system." This indicates that smooth muscle contraction is influenced by both hormonal signals and the autonomic nervous system, which operates involuntarily. Other options suggest that hormones alone, the conduction system, or the somatic nervous system might be responsible, but these are not selected as correct.
Transcribed Image Text:**Question: What stimulates smooth muscle to contract?** - O Hormones. - ● Hormones and involuntary signals from the nervous system. - O The conduction system. - O Signals from the somatic nervous system. *Explanation:* This multiple-choice question asks what triggers the contraction of smooth muscle. The correct answer, highlighted with a red dot, is "Hormones and involuntary signals from the nervous system." This indicates that smooth muscle contraction is influenced by both hormonal signals and the autonomic nervous system, which operates involuntarily. Other options suggest that hormones alone, the conduction system, or the somatic nervous system might be responsible, but these are not selected as correct.
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