Chapter 31: Anatomic and Physiologic Relationships within the Thoracic Cavity

Helpfulness: 0
Set Details Share
created 6 years ago by Annabelle
103 views
show moreless
Page to share:
Embed this setcancel
COPY
code changes based on your size selection
Size:
X
Show:
1

atrioventricular valves

valves located between the atria and ventricle

2

continuous murmur

heart murmur that begins in systole and continues without interruption through the time of the second heart sound into all or part of diastole

3

depolarization

describes the electrical activity that triggers contraction of the heart muscle

4

diastolic murmur

heart murmur that begins with or after the time of the second heart sound and ends at or before the time of the first heart sound

5

electrocardiography

method of recording the electrical activity generated by the heart muscle

6

endocardium

inner layer of the heart wall

7

epicardium

outer layer of the heart wall

8

frequency

the predominant frequency band of the murmur varies from high to low as determined by auscultation

9

intensity

(murmurs) both systolic and diastolic, vary from grade 1 to grade 6; a grade 1 murmur is very faint with progression to a grade 6 murmur that is exceptionally loud and heard with the stethoscope

10

murmur

a relatively prolonged series of auditory vibrations of varying intensity (loudness), frequency (pitch), quality, configuration, and duration; the murmur is produced by structural changes or hemodynamic events in the heart or blood vessels

11

myocardium

thick, contractile middle layer of the heart

12

pericardium

sac surrounding the heart, reflecting off the great arteries

13

repolarization

describes electrical activity just before the relaxation phase of cardiac muscle activity

14

semilunar valves

valves located in the aortic or pulmonic artery

15

systolic murmur

heart murmur that begins with or after the time of the first heart sound and ends at or before the time of the second heart sound

16

External Landmarks of the Thorax

...

17

costal margin

lower boundary of the thorax, formed by the cartilages of the seventh through tenth ribs and the ends of the eleventh and twelfth cartilages

18

midaxillary line

runs vertically from a point midway between the anterior and posterior axillary folds

19

midclavicular line

vertical line from the midpoint of the clavicle

20

midsternal line

lies in the median plane over the sternum

21

sternal angle

angle between the manubrium and the body of the sternum; also known as the angle of Louis

22

suprasternal notch

superior margin of the manubrium sterni; lies opposite the lower border of the body of the second thoracic vertebra

23

xiphisternal joint

junction between the xiphoid and the sternum

24

xiphoid

lowest point of the sternum