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Home Q & A Board Biology-Related Homework Help Anatomy and Physiology
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modari10 modari10
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12 years ago
Question 2
Which wave is larger, the one for atrial contraction or the one for ventricular contraction?Why?

Question 6.
What happens during vagal escape?

Question 8.
Describe the effect of temperature on heart rate.  

Question 9.
Did the effect match your prediction? Explain
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#1
Staff Member
12 years ago
Quote from: modari10 (12 years ago)
Question 2
Which wave is larger, the one for atrial contraction or the one for ventricular contraction?Why?

Ventricular; Ventricular contraction produces a larger wave because the ventricle contracts more forcefully than do the atria.

Quote from: modari10 (12 years ago)
Question 8.
Describe the effect of temperature on heart rate.

Decreasing temperature causes a decrease in heart rate; increasing temperature causes an increase in heart rate. There is a direct relationship between temperature and heart rate.
- Master of Science in Biology
- Bachelor of Science
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#2
12 years ago
frog cardiovascular physiology

1. what was the baseline heart rate for the frog?
60/bpm
2. ventricular contraction because the ventricle contracts more forcefully than the atria
3.in the "relaxation" part of the cardiac cycle
4.no because tetanizing would make the heart ineffective
5. the heart rate decrease to 19 and then is forced contraction after vagal escape
wrote...
#3
12 years ago
6. the HR gradually increases
7.  49/bpm with 5*c ringers soulution
69/bpm with 32* c ringers soulution
8. the lower temp causes lowerHR, and increased temp cause increased HR which is a direct relationship between temperature and heart rate
9.yes, because it is a relationship between temperature and heat
10. 44/bpm with pilocarpine
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