Int heart

Question 1

what is attached to the sup + inf border of the fibrous skeleton

Answer 1

sup- atrial myocardium is attached to sup

inf- ventricular myocardium is attached to inf

Question 2

what is the function of the fibrous skeleton

Answer 2

acts as a electrical insulator so n inn can get to AV bundle

Question 3

which fibrous ring is attachment for tricuspid and bicuspid valve

Answer 3

R fibrous ring- tricuspid valve

L fibrous ring- bicuspid valve

Question 4

which coronet is attachment for aortic and pulmonary valve

Answer 4

R- aortic

L-pulmonary

Question 5

Where is the sinus vernarum found and feature of it

Answer 5

region of the right atrium that recieves venous blood returning (very smooth)

Question 6

where are pectinate muscles usually found

Answer 6

main featire of right atrium (starts at crisa terminalis- seperates smooth and rough parts, SA node here)

Question 7

where is the oval fossa found and what was it

Answer 7

found in right atrium (during development it was an opening to oval foramen)

Question 8

what valve is in the right ventricle

Answer 8

tricuspid (papillary muscle attaches to each, 3 total)

Question 9

what is trabecula carne a feature of

Answer 9

Right+ left ventricle

Question 10

where is the septomarginal trabecula and what is its function

Answer 10

only in right ventrical

-joins septal wall + ant wall to alllow nerve signals to travel faster

Question 11

what is the supraventricular crest and what valve is located above it

Answer 11

everything above leads to pulmonary trunk (outflow part of r ventricle), semilunar valve is located here

Question 12

how many openings does the left atrium have and what surface are they on

Answer 12

4 oppenings for pulmonary veins (ox blood) on post surface

Question 13

What is the valve betweeen L atrium + vent

Answer 13

Bicuspid (mitril) valve

Question 14

Where is the aortic vestibule found and what does it lead to

Answer 14

smooth part of left ventrical, leads to aortic orifice (outflow of l verntrical)

Question 15

if there is a rupture of a tendinous cord/ insuficiency in papilary mm what could happen

Answer 15

valvular prolapse

Question 16

what do the semilunar valves close off

Answer 16

Pulmoary valve- (ant, r, + L)
+
Aortic valve- (post, r +L)

Question 17

what prevents the backflow of blood thru the valves

Answer 17

When the blood goes backward the cusps open and the nodules secure the central most part of the orifice

Question 18

what is the origin of the coronary sinus and how does blood get into it

Answer 18

Right and left aortic sinus are origins of coronary artieries and during diastolie a volume of blood enters both R and L coronary arterties

Question 19

where can u ausculate the pulmonary valve

Answer 19

level of 2nd intercostal space (left)

Question 20

Where can u ausculate aortic valve

Answer 20

level of 2nd intercostal space (right)

Question 21

where can u ausculate mitral valve

Answer 21

level of 5th intercostal space (left)

Question 22

where can u ausculate tricuspid valve

Answer 22

level of 5th intercostal space (parasternally)