Explore
Post homework questions online and get free homework help from tutors.
Help Others
Save Time
There are currently 199 guests browsing and 3 members online. So far today, 274 students have registered.
Related Images
 449 0 05/08/13

 414 0 08/14/13

 68 0 12/17/16
Questions in this board that still need answers
Poll
Which best describes your view of globalization?
I'm a nationalist and it's wrong
I'm a nationalist, but I'm open to it
It's a good thing overall
If you would like to vote in this poll, please login or register

Previous poll results: Where do you get your textbooks?
 Economics   7 hours ago   N/A   5 Views General Biology   9 hours ago   N/A   14 Views Biochemistry   9 hours ago   N/A   14 Views View More Recently Posted Questions
 New Topic
wrote...
Posts: 17
Credits: 25
Rep: 0 0
5 years ago
 PhysioEx 8.0 Exercise 6 Frog Cardiovascular Physiology Exercise 6 Activities 4-9    ****I will post some of my answers, but I need help on some of them. Please add anything that will help!! Thank you!!Activity 4: Assessing the Effect of Temperature1.) Predict what effect a decrease in temperature will have on the heart rate? Heart rate will decrease2.) What change occurred with cold (5C) Ringer's solution? Compare to the baseline value recorded in Activity 1? Heart rate decreased--62 bpm to 51 bpm3.) Did this change match your prediction? Yes4.) What change occurred with the warm (32 C) Ringers solution? Heart rate increased5) Record heart rates? 51 bpm at 5 ; 73 bpm at 32 CWhat can you say about the effect of temperature on heart rate? Temperatures play an important role when it comes to heart rate. The colder it is, the slower the heart rate; The hotter it is, the heart rate increasesActivity 5: Assessing the effect of Pilocarpine1.) Heart rate: 47 bpm2.)What happened when the heart was bathed in the pilocarpine solution? Heart rate slowed down.Activity 6: Assessing the effect of Atropine1.) heart rate: 73 bmp2.) What is the effect of atropine on the heart? Increased heart rate3.) Atropine is a drug that blocks the effect of the neurotransmitter acetylcholine, liberated by the parasympathetic nerve endings. Do your results accurately reflect this effect of atropine?? Help!!4.) Are pilocarpine and atropine agonists or antagonists with respect to each other in their effects on heart activity?? HELP!!Activity 7: Assessing the effect of Epinephrine1.) Heart rate: 82 bpm2.) What happened when the heart was bathed in the epinephrine solution? Heart rate increased even more3.) Which division of the autonomic nervous system does its effect imitate? HELP!!Activity 8: Assessing the effect of Digitalis1.) Heart rate: 43 bpm2.) What is the effect of digitalis on the heart? Heart rate decreased Activity 9: Assessing the effect of Various Ions **Plz help on this1.) Heart rate: 58 bpm Calcium Ion2.) Does the heart rate stabilize and remain stable? No it jumps up and down. It never really stayed stabilized.3.) Describe your observations of the rhythm of the heartbeat? The rhythm was all over the place. It kept jumping up and down, couldn't stabilize well.4.) Heart rate: 25 bpm Sodium Ion5.) Does the heart rate stabilize and remain stable? No doesn't stay stabilized. Jumps up and down6.) Describe your observations of the rhythm of the heartbeat? Heart rate kept changing. It went very low then jumps back up again. Doesn't stabilize long7.) Heart rate: 57 bpm Potassium Ion8.) Describe what happened to the recording?? HELP!!9.) Describe your observations of the rhythm of the heartbeat? HELP! Read 15728 times 1 Reply
replies
abc123
wrote...
5 years ago
 Activity 6 Question 4:No, Pilocarpine is an agonist in how it effects heart rate activity (it increases HR). And Atropine is antagonist for the acetylcholine receptor.
 New Topic
Similar topics that might interest you...
 Upper-Year Courses   2 years ago   afields5   4 Replies   2723 Views Anatomy and Physiology   5 years ago   Shasha2004   3 Replies   5837 Views Anatomy and Physiology   5 years ago   2 Replies   3056 Views General Biology   4 years ago   1 Reply   8882 Views
This topic is currently locked from adding new posts. Only administrators and moderators can reply. If you'd like to contribute to this topic, start a new thread and make reference to this one. Otherwise, contact a moderator for more options.