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Cardiovascular Ch. 13
Cardiovascular Ch. 13
26
Anatomy
Undergraduate 3
11/09/2011

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Term
Which arteries branch directly off aorta first?
Definition
R and L coronary arteries (supply nutrients to cardiac tissue)
Term
Right coronary artery branches into...?
Definition
Posterior interventricular artery (BACK of heart) & marginal artery (RIGHT side of heart)
Term
Left coronary artery branches into...?
Definition
Anterior interventricular artery (FRONT of heart) & circumflex artery (LEFT side of heart)
Term
Cardiac veins. What do they do? What are the 3 names?
Definition
they take deoxygenated blood from the myocardium. 1) great cardiac vein (left side) 2) middle cardiac vein (posterior), 3) small cardiac vein (right side). AND coronary sinus drains into the R.A. with bad blood (huge and in back)
Term
Semilunar valves are: aortic and pulmonar valves. They can be heard in...
Definition
2nd intercostal space (2nd & 3rd rib)
Term
Bicuspid & Tricuspid sounds are heard in...
Definition
5th intercostal space
Term
Synctium
Definition
is a mass of cardiac muscle fibers that work together (due to connecting fibers & intercalated discs)
Term
SA node (sinoatrial) is what and located where
Definition
the pacemaker! and located near Superior v.cava opening
Term
Atrioventricular (AV)node located where? Where's the AV bundle located?
Definition
AV node located in interartrial septum. AV bundle located interventricular septum.
Term
ECG or EKG.
Definition
P wave corresponds to atrial contraction. QRS complex corresponds to ventricular contraction.
Term
Regulation of cardiac cycle: roles of SA node, Vagus nerve and Medulla Oblongata?
Definition
SA node: controls heart rate Vagus: has parasympathetic fibers which decrease heart rate M.O: balances BOTH para and sympathetic actions
Term
What's the blood flow pathway through the circulatory system, starting with R.A. through lungs through aorta through body and back to heart?
Definition

Right atrium --> Tricuspid Valve --> Right ventricle --> *Pulmonary valve* --> Pulmonary Trunk --> *R/L Pulmonary arteries* --> Capillaries of R/L lungs -->Alveoli for gas exchange --> Pulmonary veins --> Left atrium --> Bicuspid/Mitral valve --> Left Ventricle --> Aortic valve --> Aorta --> Systemic arteries --> Body tissues --> Systemic veins --> Superior and Inferior vena cava + Coronary Sinus

Term

Lubb.

 

What closes?

Where does blood fill up in the heart?

Where does blood flow out of the heart?

Definition

Shutting of bicuspid & triscuspid valves.

 

Blood fills Atria.

 

Ventricular systole (Blood flows out of ventricles into pulmonary trunk and aorta)

Term

Dupp.

 

What closes?

What part of heart fills up?

Where does blood flow?

Definition

Ventricular Diastole. 

 

Semilunar valves close: pulmonary & aortic. 

Ventricles fill up. 

Blood flows from atria to ventricles.

Term
What's a nickname for SA node?
Definition
Pacemaker.
Term
SA node during atrial or ventricular contraction?
Definition
Atrial.
Term
SA node corresponds with which part of EKG graph?
Definition
P, first little bump
Term
P signifies what?
Definition
Atrial contraction
Term
QRS signify what?
Definition
Ventricular contraction
Term
AV node corresponds with which part of EKG graph?
Definition
QRS, the big hump (R being the peak of it) and then S is the little dip down
Term
Arteries BLANK, Veins BLANK.
Definition
Arteries DIVIDE, Veins MERGE.
Term
HEART. arterioles to capillaries to venules. HEART.
Definition
yea that's it.
Term
myocardium tissue is BLANKest and most BLANK of the tissues
Definition
myocardium tissue is THICKEST and most ACTIVE of the heart tissues
Term
Layers of pericardium/coverings from Outer to Inner
Definition
Fibrous - anchors heart in place
Parietal - Serous fluid here.
Visceral - continuous with outer layer of heart wall, the epicardium. Serous fluid.
Term
Heart wall layers from Outer to Inner
Definition
Epicardium
Myocardium - cardiac muscle
Endocardium
Term
which is bigger and which is more numerous? Veins or Arteries?
Definition
Veins in both cases.
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