CBSE Class 11-science - Circulatory Pathways: Human Circulatory System, Cardiac Cycle, ECG Videos
Transport in Lower Organisms by Diffusion
This video explains how lower organisms obtain nutrients and oxygen by the process of diffusion.
More videos from this chapter
View All- 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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question no. 19
- What is open vascular system
- A: elevated levels of sodium Ion increase the heart rate and contact ility R: elevated sodium Ion level increase excitability of s a node
- 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
- Why do cardiac muscles never get tired?
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the right answer in option A but here it is showing option C
- 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
- Name the two phyla which exhibit the open circulatory system.
- Name the germinal layer from which the heart is derived in humans.