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CBSE Class 11-science Answered

Name the protective covering of the heart.
Asked by Topperlearning User | 18 Jul, 2014, 02:13: PM
answered-by-expert Expert Answer

Pericardium

Answered by | 18 Jul, 2014, 04:13: PM

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CBSE 11-science - Biology
What is likely to  happen if artery of heart gets constricted due to the accumulation of plaque on its inner wall
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CBSE 11-science - Biology
question no. 19
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CBSE 11-science - Biology
A: elevated levels of sodium Ion increase the heart rate and contact ility R: elevated sodium Ion level increase excitability of s a node
Asked by arushidabhade | 25 Aug, 2019, 02:57: PM
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CBSE 11-science - Biology
A: The resting heart rate about 75 per minutes usually is lower than the autorhythmic rate of SA node (90 to 100 beats per minute) R: at resting condition the parasympathetic effects dominates
Asked by arushidabhade | 25 Aug, 2019, 02:54: PM
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CBSE 11-science - Biology
Why do cardiac muscles never get tired?
Asked by pb_ckt | 28 Apr, 2019, 01:39: PM
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CBSE 11-science - Biology
the right answer in option A but here it is showing option C
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Asked by myschooladviser1 | 12 Feb, 2019, 04:03: PM
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CBSE 11-science - Biology
what will happen if pacemaker is non functional  a. only cardiac muscle will contract rhytically b. the cardiac muscle will not contract in a cordinated manner rhythmically c. cardiac muscle will contract rhythmically in a cordinated manner
Asked by kaintkaku | 02 May, 2018, 08:39: AM
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Name the two phyla which exhibit the open circulatory system.
Asked by Topperlearning User | 18 Jul, 2014, 02:13: PM
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Name the germinal layer from which the heart is derived in humans.
Asked by Topperlearning User | 18 Jul, 2014, 02:13: PM
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