Anatomy Topic 2 Case 5 Flashcards

1
Q

Where does the right coronary artery arise?

A
  • Right aortic sinus in the ascending aorta
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2
Q

Outline the course taken by the right coronary artery

A
  • Descends vertically in coronary sulcus (between right atrium and ventricle)
  • Turns posteriorly at the inferior margin onto the diaphragmatic surface and base of the heart
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3
Q

Outline the pathway taken by the atrial branch of the right coronary artery

A
  • Passes in the groove between right auricle and ascending aorta
  • Gives off sinu-atrial node which passes posteriorly around superior vena cava
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4
Q

Outline the pathway taken by the right marginal branch of the right coronary artery

A
  • Approaches inferior margin of heart

- Towards apex of the heart

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5
Q

Outline the pathway taken by the posterior interventricular branch of the right coronary artery

A
  • Lies in the posterior interventricular sulcus
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6
Q

Where does the left coronary artery arise?

A
  • Left aortic sinus of ascending aorta
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7
Q

Outline the course taken by the left coronary artery

A
  • Passes between pulmonary trunk and left auricle

- Enters coronary sulcus

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8
Q

Outline the course taken by the left anterior descending artery

A
  • Continues around left side of pulmonary trunk
  • Descends obliquely towards apex of the heart
  • In the anterior interventricular septum
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9
Q

Outline the course taken by the circumflex artery

A
  • Courses through coronary sulcus onto diaphragmatic surface

- Gives off left marginal artery

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10
Q

Identify the structures supplied by the right coronary artery

A
  • Right atrium
  • SA and AV nodes
  • Posterior third of interventricular septum
  • Diaphragmatic surface of right ventricle
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11
Q

Identify the structures supplied by the right coronary artery

A
  • Left atrium
  • Left ventricle
  • Anterior two thirds of interventricular septum
  • Anterior surface of right ventricle
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12
Q

Identify the course taken by the greater cardiac vein

A
  • From apex it ascends in the anterior interventricular sulcus
  • Turns to the left at the coronary sulcus and continues to the diaphragmatic surface of the heart
  • Enlarges to form coronary sinus
  • Which enters right atrium adjacent to inferior vena cava
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13
Q

Identify the course taken by the middle cardiac vein

A
  • From apex it ascends in the posterior interventricular sulcus
  • Towards coronary sinus
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14
Q

Identify the course taken by the small cardiac vein

A
  • Begins in the lower anterior section of the coronary sulcus
  • Continues in this groove onto the diaphragmatic surface of the heart
  • Enters the coronary sinus at its atrial end.
  • It may receive the right marginal vein.
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15
Q

Identify the course taken by the posterior cardiac vein

A
  • Posterior surface of left ventricle to the left of the middle cardiac vein
  • Enters coronary sinus or joints great cardiac vein
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16
Q

Where are the veins of Thebesius located?

A
  • Between right atrium and ventricle
17
Q

What is the moderator band?

A
  • Muscular band of heart tissue in the right ventricle of the heart.
  • Extends from the base of the anterior papillary muscle to the ventricular septum.
18
Q

Where is the superficial part of the cardiac plexus located?

A
  • Inferior to aortic arch between it and the pulmonary trunk
19
Q

Where is the deep part of the cardiac plexus located?

A
  • Between aortic arch and tracheal bifurcation
20
Q

Sympathetic Innervation

  • Preganglionic neurones arise [A]
  • Stimulation [B} heart rate and contraction force
  • Postganglionic neurones release [C]
  • Postganglionic nerve cell bodies are located at [D]
  • Stimulation [E] coronary vessels
A
  • [A] CNS at spinal segments T1-T6
  • [B] Increases
  • [C] Noradrenaline
  • [D] Paravertebral Ganglia
  • [E] Dilate coronary vessels
21
Q

Parasympathetic Innervation

  • Preganglionic neurones are contained within [A]
  • Stimulation [B} heart rate and contraction force
  • Postganglionic neurones release [C]
  • Postganglionic nerve cell bodies are located at [D]
  • Stimulation [E] coronary vessels
A
  • [A] Vagus Nerve
  • [B] Decreases
  • [C] Acetylcholine
  • [D] The walls of the atria
  • [E] Constricts
22
Q

Through which vessels is oxygenated blood delivered to the foetus?

A
  • Umbilical Vein
23
Q

Through which vessels is oxygenated blood returned to the placenta?

A
  • Internal iliac arteries

- Umbilical Arteries

24
Q

What is the function of the Foramen Ovale?

A
  • Allow blood to bypass from right atrium into left atrium
25
Q

What is the function of the Ligamentum Venosum?

A
  • Allow blood to bypass liver into inferior vena cava
26
Q

What is the function of the Ductus Arteriosus?

A
  • Allow blood to bypass from right ventricle to descending aorta
  • To avoid pulmonary vessels
27
Q

What does the obliterated umbilical vein form?

A
  • Ligamentum Teres
28
Q

What does the obliterated ductus venosus form?

A
  • Ligamentum Venosum
29
Q

What does the ductus arteriosus form?

A
  • Ligamentum Arteriosum
30
Q

What does the foramen ovale become

A
  • Fossa Ovale