Cardiovascular System 3, Blood circulation
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- เผยแพร่เมื่อ 30 ก.ย. 2024
- Incredibly, the left side of the heart pumps out the total blood volume in one minute. Please give me as many 'likes' on these videos as you can, it helps the channel to grow.
Blood Vessels 6, Regulation of blood pressure
Choose one true statement;
a. the carotid sinus is found in the arch of the aorta
b. the carotid sinus contains a lot of chemoreceptors
c. the carotid sinus is found in the external carotid artery
d. the carotid sinus is found in the internal carotid artery *
e. none of the above are correct
Choose one true statement;
a. baroreceptors from the aorta travel to the cardiac centre via cranial nerve IX
b. baroreceptors from the carotid sinus travel to the cardiac centre via cranial nerve X
c. increase in blood pressure will cause a reduction in the numbers of action potentials generated by the baroreceptor
d. lowered blood pressure will cause increased stretching of the walls of the carotid sinus
e. none of the above are correct *
Reduced frequency coding of the inputs into the cardiovascular centre will result in;
a. increased sympathetic outflow *
b. increased parasympathetic outflow
c. reduced heart rate
d. reduced strength of inotropic contraction of the myocardium
e. dilation of systemic arterioles
Vasoconstriction of systemic arterioles will;
a. decrease blood pressure
b. increase tissue perfusion
c. increase systemic vascular resistance *
d. decrease systemic vascular resistance
Heart 7, ECG Waves
At rest prior to contraction, an individual myocite will be electrically
a. negative inside *
b. negative outside
c. positive inside
d. neutral on both sides of the external cell membrane
A normal sinus rhythm, ECG trace always has a;
a. P wave after the QRS complex
b. P wave before the QRS complex *
c. 0.3 second gap between the P wave and the QRS complex
d. 0.05 second gap after the T wave before the next P wave
The P wave is generated by the;
a. depolarisation of the atrial myocardium *
b. repolarisation of the atrial myocardium
c. depolarisation of the ventricular myocardium
d. repolarisation of the ventricular myocardium
The QRS complex is generated by the;
a. depolarisation of the atrial myocardium
b. repolarisation of the atrial myocardium
c. depolarisation of the ventricular myocardium *
d. repolarisation of the ventricular myocardium
The T wave is generated by the;
a. depolarisation of the atrial myocardium
b. repolarisation of the atrial myocardium
c. depolarisation of the ventricular myocardium
d. repolarisation of the ventricular myocardium *
Blood Vessels 7, Pulmonary circulation
In which of the following vessels will blood pressure be the highest?
a. the pulmonary artery
b. the aorta *
c. the pulmonary veins
d. the inferior vena cava
How many pulmonary veins drain into the left atrium;
a. 0
b. 1
c. 2
d. 3
e. 4 *
Rank these arterial vessels order in order of descending size
a. interlobar, segmental, lobar, subsegmental, intralobular
b. intralobular, lobar, segmental, subsegmental, interlobar
c. interlobar, lobar, segmental, subsegmental, intralobular *
d. lobar, intralobular, segmental, subsegmental, interlobar
Select one true statement;
a. pulmonary lobules do not have any lymphatic drainage
b. the terminal bronchioles are more narrow than the respiratory bronchioles
c. respiratory bronchioles have isolated alveoli in their walls *
d. bronchioles have small rings of cartilage
e. the right lung has 2 lobes and nine segments
From what you are saying, for a healthy individual the LVER Should be 100,but that is seldom the case. In reality it is lower. In my own case it is below 50.Please advise what to do. Before you ask my age is 75.
These 3 cardiovascular lectures are the most understandable. Thank you Dr. Campbell!
You have such a good heart to give away all this knowledge. Warm regards. Thank you so much
I appreciate you so much Dr. Campbell✝️ you make it so much easier to comprehend.
Thanks, do click a 'like', this really helps the channel to grow.
Sir thank you so much for such type of videos, my all doubts are cleared now.. I am able to understand how our heart works.. Great work by you sir..
Thank you again Dr. Campbell!
I am an Indian and can't understand you very efficiently but with the help of subtitles I am feeling that I have come to right place on you tube.
It's a british accent 😂😂
Wow! so amazing facts! My heart is pumping 4,727 Liters of blood per minute and I am just sitting watching your amazing videos!
Dr Campbell sir the way you explain the system is excellent and easy to grasp thanks and regards 05/01/2020
Wow, had a mitral replacement couple years ago, and understanding so much more about the whole heart system is fantastic. Thanks! I really enjoyed the diagrams too as I am situs inversus.
Thank you very much sir🥰
Very informative, I love your analogy
Nyc sir i like all your vdos and you r inspiration for me
При показателях давления 120/80 и пульсе 60, артериальное давление будет 47,99мм рт ст (давление в пределах физиологической нормы). При показателях 111/60 и пульсе 60, артериальное давление будет 61,05мм рт ст (давление незначительно повышено в пределах физиологической нормы). При показателях 20/12 и пульсе 60, артериальное давление будет 18,20мм рт ст.(Давление критически низкое) При показателях 70/70 и пульсе 60, артериальное давление будет 33,24мм рт ст (давление низкое).
please sir,can some one get all this diagrams on your websites?
Good thanks for uploading
Dr. Campbell, you are an amazing teacher! I understand so much more about our heart anatomy and function because of your teaching. Thank you!!
Too Good!!!!!!!!!!
Great thanks my best doctor
I finally understand cardiovascular system now! Thank you Dr. Campbell!
I do really enjoy your presentation
Thank you sir best explanation i keep watching your vedios😊
Always fascinated by your presentation doctor.
sir love your explanation .
I never saw a good teacher like you.
the information was so useful to me .💖💖
Thanks sir ☺☺☺
Wonderful presentation Sir!
Thank you very much!
Good lessons
Sir
Dr. John is the best . I can understand all!!
thank you
did you mean to say 5 litres pumped out 'per contraction'? can't imagine the heart holding 5 litres in ventricles at any one time, i thought it was more like 70ml per contraction. 6.30 minutes.
5 litres per minute is correct
@@Campbellteaching Lol nice slip - but not confusing. This is good education for me having recently survived an MI and having 2 Stents inserted...
I’m starting as a newly qualified nurse in the PCI labs soon, I’m really nervous and your videos have been so helpful to me. Thanks a lot.
A true master
Hi sir am very excited to get good lecturer like u since I joined school no one have ever explain the cardiovascular system on hw the blood circulated in the general body i nw know more thanks for that❤
Thanks!!
very understandable , Watching from Tanzania East Africa
I love you Dr Cambell. You have taught me so well to understand this. In my high school lessons, I was confused about how it works. Thank you so much!
5 liters Per minute not per contraction thank you so much dr.
i really enjoyed your lecture may God grant you long life to teach us more
very clear , thank you mr doktor , I am from indonesia ..I read your books , now i follow your lectur
Thank you
Champion
Ty so much
Good lessons
Sir
مش فاهمه الفيديو مين بتكلم عربى يفهمهولى
Thanks Dr👍
I wish I could give you 10 likes
helo mr.john Campbell, you are awesome .many time i tried to understand this topic , at least today i completely understand with your easy way. thanks for your video.
Excellent, well done
👍👍👍👍
these lessons are amazing!
YOU ARE THE BEST GOD BLESS YOU
thank you