Biology · Human Circulatory System
Consider the following statements regarding the human heart and circulatory system: 1. An average resting heartbeat is around 72 times per minute. 2. The human heart consists of four chambers. 3. The average weight of an adult human heart is approximately 250 to 350 grams. 4. When a person is excited, scared, or anxious, the heart rate increases due to the secretion of adrenaline. Which of the statements given above are correct?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 11, 2, 3 and 4✓
- 21 and 3 only
- 32, 3 and 4 only
- 41, 2 and 3 only
Correct answer
1, 2, 3 and 4
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