Exam (elaborations)
BIOS 255 Midterm Review Exam Questions with Verified Answers..
- Course
- Institution
BIOS 255 Midterm Review Exam Questions with Verified Answers..
[Show more]
Seller
Follow
Realler
Reviews received
Content preview
BIOS 255 Midterm Review Exam Questions with VerifiedAnswers.
Pulmonary Circulation - flow of blood from the heart to the lungs and back to the heart
Systemic Circulation - flow of oxygenated blood to the whole body
Location of the Heart - In the mediastinum, between the lungs, with its apex pointing to the
LEFT of midline
Pericardium - Double-layered membrane surrounding the heart which anchors and protects
it.
Fibrous Pericardium - Most superficial layer of the pericardium, composed of connective
tissue
Serous Pericardium - Membrane consisting of a visceral and parietal layer
Parietal Pericardium - Lines inner surface of fibrous pericardium
Visceral Pericardium - Lines external surface of the heart. AKA the Pericardium
Pericardium - Outermost layer of the heart, AKA visceral pericardium
Myocardium - Muscle layer of the heart
Endocardium - lines innermost surfaces of the four chambers
Atria - Two superior chambers of the heart
Ventricles - Two inferior chambers of the heart
Pectinase Muscles - Muscular ridges/folds of the atria
Trabecular Carnie - muscular ridges on the internal surface of the ventricles
Papillary Muscles - responsible for pulling the atrioventricular valves closed by means of the
chordae tendineae
Chordae Tendineae - thin bands of fibrous tissue that attach to the valves in the heart and
prevent them from inverting
Blood flow through the body - SVC/IVC/CS
R Atrium
Tricuspid Valve
R Ventricle
Pulmonary SL Valve
Pulmonary Trunk
Pulmonary Arteries
Lungs
Pulmonary Veins
L Atrium
Bicuspid Valve
Page 1|8
, L Ventricle
Aortic SL Valve
Aorta
Fibrous Skeleton of the Heart - -framework of collagenous and elastic fibers
-provides structural support and attachment for cardiac muscle and anchor for valve tissue
-electrical insulation between atria and ventricles > important in timing and coordination of
contractile activity
Ligamentous Arteriosum - Remnant of Ducts Arteriosus of fetal heart
Fossa Ovals - Remnant of Foramen Ovule of fetal heart
R Coronary Artery - Splits into Marginal Branch anteriorly at the R ventricle, and posteriorly
at the Posterior Interventricular Branch
L Coronary Artery - Immediately splits into Anterior Interventricular Artery anteriorly and
Circumflex posteriorly
Coronary Veins - Great Cardiac Vein: Runs with anterior interventricular artery
Middle Cardiac Vein: Runs with posterior interventricular artery
Small Cardiac Vein: Runs with Marginal artery (remember, they both mean small!)
The electrical conduction system of the heart in order - 1. Sino atrial (SA) Node
2. Atrioventricular (AV) Node
3. Atrioventricular Bundle/Bundle of HIS
4. L & R Bundle Branches
5. Purkinje Fibers
ATP production in the heart - Comes from anaerobic glycolysis and creative phosphate
P wave - Atrial depolarization (contraction)
QRS Complex - Ventricular depolarization (contraction)
S wave - Peak of ventricular depolarization
S-T Segment - Plateau--entire ventricular myocardium is depolarized
T-wave - Ventricular repolarization
Order of contraction - Both atria are rapidly contracted and relaxed followed by the same in
the ventricles
LUB sound - AV valves closing
DUB sound - semilunar valves closing
Systole - contraction
Diastole - relaxation
Cardiac Output - The volume of blood ejected from one ventricle of the heart in one minute.
Page 2|8
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 Realler. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $17.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
83637 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now