CVT 101 Cardiac Anatomy (tristyn notecards) Flashcards Preview

101 Cardiovascular Physiology 1 Fall 2013 > CVT 101 Cardiac Anatomy (tristyn notecards) > Flashcards

Flashcards in CVT 101 Cardiac Anatomy (tristyn notecards) Deck (104)
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1

Fossa Ovalis

Fetal circulation- Interaptal septum mode up of 3 different layers (very thin)

Patent Fossa Ovalis: Patients fossa ovalis never closed; causes blood flow between atriums (PFO)

2

Sulcus Terminalis

Groove located outside right atrium

located anterior to SCV

Responsible for Nodal Artery Protection

3

What are the 3 bands of muscle part of RVOT?

Moderator band: connects medial and posterior cusps
Parietal Band:
Septal Band: connects anterior cust of TV

4

RVIF

Right ventricular in flow
In flow from tricuspid valve to apex

5

Right Ventricle

pumps venus blood to lungs
Normal pressure: 25-30mmHg systolic
0-5mmHg diastolic
Normal SvO2: 74-76%

6

Preload

volume in ventricle after diastole

7

Papillary Muscle

connects the tricuspid valve
Anterior pap muscle: off moderator band
-connects posterior cusp of TV
Posterior Pap muscle: off moderator band
-connects medial cusp of TV
Medial Pap muscle: off septal band
-connects anterior cusp of TV
*pap muscles contract! Supports TV cordae

8

RVOF

Right ventricle outflow
outflow from apex to pulmonic valve

9

Infundibulum

AKA: RVOF
Infundibular stenosis: pulmonic stenosis

10

Trabeculation

striations in ventricular myocardium surface inside chamber.

most of RV is tribeculated
*Only anterior portion of RA where SVC and IVC meet is smooth

11

Crux of the heart

Located posteriorly
Where coronary sinus, posterior interventricular sulcus and right atrioventricular sulcus meets

12

Pulmonary Veins

4 pulmonary veins
1. Right superior
2. Left superior
3. Right inferior
4. Left inferior
-Continuous flow, no valves
-Transports oxygenated blood from the lungs to the LA
Normal pressure: 9-15mmHg
Normal SaO2: 97-99%

13

Pulmonary Artery

(2) Right and Left
-Pumps venous blood to the lungs thru PV
-Rises from the left ventricle
-more anterior than the aorta
-main pulmonary trunk branches into Right and Left pulmonary branches
Normal Pressure: 25-30mmHg systolic
5-10mmHg diastolic
Normal SaO2: 74-76%

14

Right Main Coromary artery

2 branches:
1. Anterior Right artial branch
-lays underneath RAA
2. Nodal Artery
-Supplies SA Node

Continues posteriorly and rises to posterior decending artery
Supplies: RA, RV, and LV (right dominate)

15

Thoracic Cavity

Occupies upper portion of thoracic cage above diaphragm
Contains: 2 pleural cavities, 2 plural sacs that encase the lungs, mediastinal and pericardial

16

Left Atrioventricular sulcus

Divides LA and LV
contains:
1. Left Coronary (Main)
2. Circumflex Arteries
3. Great Cardiac Vein

17

Anterior Interventricular sulcus

Divides LV and RV on anterior side
Contains:
1. Anterior interventricular sulcus (LAD) (Decending) Artery
2. Great Cardiac Vein

18

Azygos System

Azygos Veins drain into SVC and IVC

Longitudinal vessels on each side of body that drain blood from body wall and move it superiorly to empty into SVC

*Pathway for venous return from lower extremities to heart if IVC gets blocked.

19

Carotid Sheath

Fibrous Connective tissue that surrounds the brachial plexus

20

Lower Esophogeal Veins

Venous return from esophagus to IVC

21

Pulmonary Artery Wedge pressure

-Indirect estimate of left arterial pressure
-Directly measures pulmonary artery pressure
-Swan-Ganz catheter thru RA, RV, PV, PA and wedged into pulmonary branch
-Normal Pressure: 9-15mmHg

22

Atrial-Septal Defect (ASD)

Hole between RA and LA

causes right side failure due to volume and pressure overload in RA which causes too high pressure going to lungs

23

Ductus Arterious/
Ligamentum Arteriosum

In fetal circulation, ductus arterius is located between the Ao and Pulmonary artery

Left and Right shunt

Once closed (72 hours after birth) then known in adulthood as ligamentum arteriosum

24

What is normal Ao Root size?

3.8 cm

25

Ao Dilation

Large Ao wall

At risk for Ao rupture or dissection

26

Aorta

Located posterior to the manubrium and arches left. Part of pericardial and mediastinal cavities.

Semi-lunar valve

Gives rise to the 3 head vessels:
1. Brachiocephalic (innominate) Artery
2. Left common carotid
3. Left subclavian

Acending to Transverse to Decending to Abdominal

27

Artery Dissection

Tear in the intima/media wall of artery

28

What does Aorta do when heart contracts?

Moves anteriorally to promote stroke volume

29

Aortic Wall Layers

Intima: Innermost layer composed of active endothelial cells; susceptible to clot formations

Media: middle myscular layer
*takes the most "grunt" from pressure

Adventitia: Outside layer

30

Vaso Vasorum

The arterial and venous supply to larger arteries

Example: Aorta and Coronary arteries