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Vertebrate Anatomy > Sheep heart > Flashcards

Sheep heart Flashcards

1
Q

in situ the sheep heart is enclosed with

A

fibroserous pericardial sac

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2
Q

what is the base of the heart

A

wide upper or anterior end of the heart

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3
Q

what is the apex of the heart

A

blunt tip of heart composed entirely of left ventricle

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4
Q

what are the appendages of the atria

A

auricles

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5
Q

what does the pulmonary trunk divide into

A

the left and right pulmonary arteries

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6
Q

what do the pulmonary arteries do

A

carry unoxygenated blood to lungs

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7
Q

what is the function of the aorta

A

carries oxygenated blood from left ventricle to be distributed throughout the whole body

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8
Q

what is the ligamentum arteriosum

A

degenerated embryonic ductus arteriosus

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9
Q

what is the brachiocephalic artery

A

divides and extends to be right subclavian and other extends to be right common carotid

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10
Q

what is the interventricular sulcus

A

longitudinal groove from lower left heart to upper right heart

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11
Q

what is the function of the superior vena cava

A

drains venous blood to the right atrium from most trunk and lower limbs

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12
Q

what is the function of the pulmonary veins

A

carry oxygenated blood from lungs back to the heart opening into left atrium

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13
Q

where is the aorta located

A

next to the brachiocephalic artery

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14
Q

what is the function of the pulmonary arteries

A

carry venous blood from right ventricle to the lungs so it can be oxygenated

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15
Q

what are the two parts of the right atrium

A

venous sinus and right auricle

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16
Q

what are the muscle ridges in the right auricle of the right atrium

A

musculi pectinati

17
Q

what 5 orifices communicate with the right atrium

A

opening of superior vena cava, opening of inferior vena cava, atrioventricular opening, coronary sinus opening, opening of small cardiac veins

18
Q

what is the function of the coronary sinus

A

cardiac veins drain blood from myocardium into here.

19
Q

what is the function of the pulmonary semilunar valve

A

controls blood flow through circular orifice at base of pulmonary trunk

20
Q

where is the fossa ovalis found

A

right side of the ineratrial septum (fetal scar)

21
Q

what are the chordae tendineae

A

produce tension on valve flaps to prevent blood flowing in wrong direction

22
Q

what are trabeculae carneae

A

lattice like arrangement of muscle tissue on inner wall of ventricle

23
Q

what is the aortic semilunar valve

A

prevent blood from flowing up into left ventricle

24
Q

what is the bicuspid valve

A

two flaps and acts the same way left and right

Vertebrate Anatomy (10 decks)

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