Exam (elaborations)
HTHSCI 1H06 Winter Midterm (McMaster University)
- Course
- Institution
HTHSCI 1H06 Winter Midterm (McMaster University)
[Show more]
Content preview
1-39 of 39(1) only area that ap can be conducted from atria to ventricles
(2) larger vessels at apex that ap continues down
AV node --> bundle of his --> R and L bundle branches --> interventricular septum -->
pukinje fibres --> ventricles
Give this one a go later!
(1) bundle of his
(2) purkinje fibres
,(1) supplies heart with blood ASAP
(2) anterior, within interventricular sulcus, lying with LAD in groove, ends in dilated
structure called the coronary sinus
Give this one a go later!
(1) coronary veins
(2) great cardiac vein
(1) increase calcium and contraction of tissue
(2) decrease calcium, contraction decreases
Give this one a go later!
(1) positive inotrope
(2) negative inotrope
(1) heart, ascending aorta, pulmonary trunk and phrenic nerves
(2) thymus gland
(3) descending aorta, esophagus, lymph nodes, vagus nerve and thoracic duct
(4) aortic arch, esophagus and trachea
Give this one a go later!
(1) middle region
(a) anterior (front) region
(3) posterior region
(4) superior (top) region
, record of AP that occurs across heart muscle fibres
(1) depolarization of atria
-slows at AV node
(2) depolarization of ventricles
-stimulate ventricular cardiomyocyte, contraction = QRS complex
(3) repolarization of ventricles
(4) rebounding of blood off semilunar valves when they're closing
Give this one a go later!
ECG
(1) P wave
(2) QRS wave
(3) T wave
(4) dicrotic wave
(1) - 0.05 sec, volume of blood in chambers remains the same --> atria is empty
- all 4 valves closed, after atrial contraction
(2) - volume of blood in chambers is same, all 4 valves closed
- after ventricular relaxation
Give this one a go later!
(1) isovolumetric contraction
(2) isovolumetric relaxation
(1) fossa ovalis - because of increase pressure in LS valve closes
(2) ligamentum arteriosum - loss of prostaglandin (vasodilator), closes 24-48 hours
after birth
(3) ligamentum venosum - turns into ligament within 3 months
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller codersimon. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $8.00. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
75759 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now