Unit 5 part 4

Question 1

Function of the moderator band?

Answer 1

conduct right bundle branch
may prevent over distention

Question 2

Where is musculi pectinati?

Answer 2

anterolateral wall of right atrium

it is supposed to prevent over distention of the heart

Question 3

Which part of right atrium is smooth?

Answer 3

interatrial septum / posteromedial wall

Question 4

what separates smooth wall of right atrium from musculi pectinati?

Answer 4

Crista terminalis

Question 5

What is fossa ovalis called before birth? What did it do?

Answer 5

Foramen ovale
right to left shunt to bypass lungs
7-10 days physiologic closure
2 weeks true anatomic closure
sometimes have a small amount of patency left into adulthood. as long as it is small enough wont cause a problem

Question 6

What is the valve at the opening of the coronary sinus into right atrium?

Answer 6

Thebesian valve

Question 7

What is the valve at the top of the IVC?

Answer 7

Eustachian valve

Question 8

Name the opening between the right atrium and right ventricle

Answer 8

Right AV Orifice

Question 9

Name the cusps of the tricuspid valve

Answer 9

Anterior cusp
septal/medial cusp
posterior cusp

Question 10

Name the beginning of the pulmonary trunk on the outside

Answer 10

conus arteriosus

Question 11

name the beginning of the pulmonary trunk from the inside

Answer 11

supraventricular crest

Question 12

Do we have musculi pectinati in the left atrium?

Answer 12

No, only in left atrial appendage.

This is where clots form in Afib

Question 13

normal pulmonic circulation presure?

Answer 13

25/10

Question 14

normal systemic circulation pressure?

Answer 14

120/80

Question 15

Where does right coronary artery begin?

Answer 15

Ascending aorta, distal to right aortic valve cusp

Question 16

where does left coronary artery begin?

Answer 16

ascending aorta, distal to left aortic valve cusp

Question 17

Name cusps of Tricuspid valve

Answer 17

Anterior
Posterior
Septal (medial)

Question 18

name cusps of bicuspid valve

Answer 18

anterior cusp
posterior cusp

Question 19

name cusps of pulmonic valves

Answer 19

Left cusp
right cusp
anterior cusp

Question 20

name Aortic valve cusps

Answer 20

left cusp
right cusp
Posterior cusp

Question 21

Parts of Aortic valve

Answer 21

lunula
nodule
sinus

Question 22

Secondary arterial branches of RCA?

Answer 22

Anterior right atrial branch
branch to the sinoatrial node

Question 23

secondary branches off circumflex artery?

Answer 23

lateral left ventricular branch
posterolateral left ventricular branch
posterior left ventricular branch

Question 24

secondary branches off Anterior descending artery?

Answer 24

diagonal branch

Question 25

What vein drains the Right ventricle?

Answer 25

anterior cardiac veins

Question 26

what vein drains the left atrium?

Answer 26

oblique vein

Question 27

great cardiac vein forms anastomosis with what other cardiac vein?

Answer 27

middle cardiac vein

Question 28

Name the two layers of the pericardial sac

Answer 28

visceral layer
outer layer
parietal (serous) portion
fibrous portion

Question 29

what nerve provides sensory innervation to pericardium?

Answer 29

phrenic nerve

Question 30

What supplies blood to pericardium?

Answer 30

pericardiophrenic arteries
pericardial arteris

Question 31

where do pericardiophrenic arteries originate?

Answer 31

branch from the internal thoracic arteries

Question 32

where do pericardial arteries originate?

Answer 32

branch from the thoracic aorta

Question 33

Viseral organs usually have what kind of innervation?

Answer 33

sympathetic and parasympathetic innervation

Question 34

which nerves provides the parasympathetic pre-ganglionic innervation to the heart?

Answer 34

vagus nerve

Question 35

Where/what is the cardiac plexus?

Answer 35

overlays the heart and great vessels
anteriorly

where sympathetic and parasympathetic fibers to the heart mix

Question 36

what does the ductus arteriosus / ligamentum arteriosum connect?

Answer 36

aortic arch and left pulmonary artery

Question 37

ligamentum arteriosum is close to which nerve?

Answer 37

recurrent laryngeal nerve

Question 38

What nerve innervates quadratus lumborum muscle?

Answer 38

T12 and L1-4 roots

Question 39

what nerve innervates psoas major?

Answer 39

lumbar plexus L2-L4

Question 40

what nerve innervates iliacus muscle?

Answer 40

femoral nerve

Question 41

What two nerves come from L1 VPR?

Answer 41

iliohypogastric nerve
ilioinguinal nerve

Question 42

What nerves does motor innervation for both the internal abdominal oblique m. and transversus abdominis m.?

Answer 42

iliohypogastric and ilioinguinal nerves
subcostal nerves
lower 5 intercostal nerves

Question 43

what nerves does motor innervation for external abdominal oblique muscle?

Answer 43

subcostal nerves
lower 5 intercostal nerves

Question 44

what nerves provide motor innervation to rectus abdominis mucles?

Answer 44

lower 5 intercostal nerves

Question 45

iliohypogastric nerve provides sensory innervation to what region?

Answer 45

lateral gluteal region, abdomen between the umbilicus and the pubic bone

Question 46

ilioinguinal nerve provides sensory innervation to what region?

Answer 46

inguinal (groin) region, male/female genitalia, and the upper anterior & medial thigh

Question 47

lateral femoral cutaneous nerve does what?

Answer 47

sensation to lateral thing

Question 48

lateral femoral cutaneous nerve arises from which roots?

Answer 48

L2-L3

Question 49

Genitofemoral nerve arises from which roots?

Answer 49

L1-L2

Question 50

femoral nerve arrises from which roots?

Answer 50

L2-L4

Question 51

obturator nerve arrises from what nerves?

Answer 51

L2-L4

Question 52

sciatic nerve arrises from which roots?

Answer 52

L4-S3