heart lab

Question 1

ventral view of heart shows

Answer 1

auricles, diagonal IV sulcus, aorta and p.trunk, bulge curvature

Question 2

dorsal view of heart shows

Answer 2

straight up and down IV sulcus, veins of great vessels, flat (no curvature)

Question 3

walls of atrium and auricle

Answer 3

atrium - smooth internal wall
auricle - irregular internal wall (pectinated muscle)

Question 4

whats trabeculae carneae

Answer 4

found in ventricles and appear as ridged, irregular, and interwoven muscular bands. Provides structural support.

Question 5

whats the thing that allows bypass of blood from lungs

Answer 5

adult - ligamentum arteriosum
fetal - ductus arteriosus

Question 6

what allows blood from right atrium to left

Answer 6

adult - fossa ovalis
fetal - foramen ovale

Question 7

whats moderator band

Answer 7

only found in right ventricle and is a extension of purkinje fibres (conduction of heart)

Question 8

pressures of the heart

Answer 8

left atrium 2-12 mmHg
right atrium 0-8 mmHg
right ventricle 15 to 30 mmHg systolic diastolic 0 and 8 mmHg
left ventricle 90 to 140 mmHg systolic
diastolic 4 to 12 mmHg

Question 9

whats interatrial septum

Answer 9

separates the right atrium from the left atrium in the heart. It plays a crucial role in the proper functioning of the heart by preventing the mixing of oxygenated and deoxygenated blood between the two atria