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SEM2 ANATOMY > Circulatory system > Flashcards

Flashcards in Circulatory system Deck (32)
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1

What percentage of cardiac output do the kidneys receive at rest?

25%

2

From where do the renal arteries arise?

Abdominal aorta

3

What vertebral level does the abdominal aorta run to/from?

T12 to L4

4

What is unique about the course of the right renal artery?

Runs behind IVC, longer than left renal artery due to position of great vessels

5

Outline the course of renal blood flow into and out of the kidneys...

Renal artery, segmental artery, interlobar artery, arcuate artery, interlobular artery, afferent arteriole, glomerulus (site of filtration), efferent arterioles, peritubular capilaries/vasa recta, interlobular vein, arcuate vein, renal vein, IVC

6

What percentage of cardiac output is delivered to the brain when resting?

1/6th

7

What are the two main arteries that supply the brain?

Internal carotid
Vertebral

8

What is an alternative name for the circle of Willis?

Cerebral arterial circle

9

At what vertebral level does the common carotid bifurcate into the internal and external carotid? (ICA and ECA)

C4

10

What structures are supplied by the external carotid artery?

Face and jaw

11

Through what foramen does the ICA pass en route to the cranial cavity?

Carotid canal

12

What are the 4 branches of the ICA?

Ophthalmic artery
Posterior communicating artery
Middle cerebral artery
Anterior cerebral artery

13

Where does the vertebral artery arise?

Subclavian- medial to anterior scalene muscle

14

Describe the path of the vertebral artery before it reaches the cranial cavity...

Runs through foramina in transverse processes of cervical vertebral called 'foramen transversarium'

15

Whats the name of the hole in which the vertebral artery passes before it reaches the cranial cavity?

Foramen magnum

16

What are the 3 branches of the vertebral artery (before anastomosis)

Meningeal branch
Anterior and posterior spinal arteries
Posterior inferior cerebral artery

17

The left and right vertebral artery anastomose to form what?

Basilar artery

18

The left and right posterior cerebral arteries are formed by a bifurcation of which artery?

Basilar artery

19

The anterior communicating artery links which to structures?

Left and right anterior cerebral arteries

20

What brain structures are supplied by the basilar artery?

Pons

21

What brain structures are supplied by the anterior cerebral artery?

Medial surfaces of cerebral hemispheres (except occipital lobe)

22

What brain structures are supplied by the middle cerebral artery?

Lateral surfaces of cerebral hemispheres (expect occipital lobe)

23

What brain structures are supplied by the posterior cerebral artery?

Inferior surface of brain and occipital lobe

24

What brain structures are supplied by the posterior inferior cerebellar artery?

posterior inferior cerebellum

25

What brain structures are supplied by the anterior inferior cerebellar artery?

anterior inferior cerebellum

26

What brain structures are supplied by the anterior spinal artery?

Spinal cord

27

What brain structures are supplied by the superior cerebellar artery?

Superior aspect of cerebellum

28

What is the function of the ductus venosum before birth? What is it called after birth?

A shunt diverting blood from umbilical vein to IVC

Ligamentum venosum

29

What is the function of the ductus arteriosum before birth? What is it called after birth?

A shunt diverting blood from the pulmonary trunk to aorta

Ligamentum arteriosum

30

What is the function of the foramen ovale before birth? What is it called after birth?

Shunt directing blood from RA to LA

Fossa ovalis