Blood vasculature lab

Question 1

Internal carotid artery

Answer 1

Branch of common carotid, passes through carotid canal. Becomes the anterior and middle cerebral arteries. Supplies branches to walls of cavernous sinus, pituitary, trigeminal ganglion, primary to the brain

Question 2

Anterior cerebral artery

Answer 2

Supplies cerebral hemispheres (except the occipital lobes), especially medial portions

Question 3

Anterior communicating artery

Answer 3

Connects two anterior cerebral arteries

Question 4

Middle cerebral artery

Answer 4

Supplies lateral portions of frontal, parietal, temporal lobes, some of lateral occipital lobe

Question 5

Anterior choroidal artery

Answer 5

Supplies choroid plexus beginning in the temporal pole

Question 6

Posterior communicating artery

Answer 6

Connects branches between the internal carotid and the posterior cerebral arteries, supplies posterior thalamus

Question 7

Vertebral arteries

Answer 7

Origin: subclavian artery. Through foramen magnum

Question 8

Posterior inferior cerebellar artery

Answer 8

Branch of vertebral artery, supplies lateral brain stem and the posterior-inferior cerebellum

Question 9

Anterior spinal artery

Answer 9

From vertebral artery. Supplies ventral and intermediate gray matter of the spinal cord and ventral and lateral funiculi.

Question 10

Basilar artery

Answer 10

2 vertebral arteries join at the medulla and pons and form the basilar artery. Terminal branches are the posterior cerebral arteries

Question 11

Anterior inferior cerebellar artery

Answer 11

Caudal branch of basilar artery. Supplies anterior inferior cerebellum. Labryrthine artery branches off (supplies the middle ear)

Question 12

Pontine artery

Answer 12

Short and long circumferential arteries that supply the pons

Question 13

Superior cerebellar artery

Answer 13

Rostral branch of basilar artery that supplies the superior cerebellum and the rostral pons and midbrain

Question 14

Posterior cerebral artery

Answer 14

Terminal branch of basilar artery, supplies midbrain and occipital and temporal lobes of the brain

Question 15

Dura

Answer 15

Tough connective tissue composed of periosteal and meningeal layers

Question 16

Meningeal arteries

Answer 16

Middle meningeal artery enters cranial cavity through foramen spinosum. Anterior and posterior enter through various foramina in skull base

Question 17

Superior saggital sinus

Answer 17

Upper portion of falx cerebri

Question 18

Cerebral vein

Answer 18

Venous drainage of the cerebrum into dural sinuses

Question 19

Arachnoid

Answer 19

Arachnoid membrane and trabeculae, cerebrospinal fluid between arachnoid and the pia

Question 20

Tentorium cerebelli

Answer 20

Separates the cerebellum (posterior fossa) from the cerebral hemispheres (supratentorial)

Question 21

Diaphragma cella

Answer 21

Covers sella turcica that contains the pituitary

Question 22

Arachnoid villi

Answer 22

Projections of the arachnod through the dura into the dural sinuses, resorption of CSF

Question 23

Cisterna magna

Answer 23

Large CSF containing space between cerebellum and medulla, immediately above the foramen magnum

Question 24

Lateral ventricle

Answer 24

In cerebral hemisphere and brain stem, contains CSF

Question 25

Choroid plexus

Answer 25

Responsible for forming CSF, in temporal horn and body of the lateral ventricles, roof of third ventricle, inferior medullary vellum of 4th ventricle

Question 26

Interventricular foramen

Answer 26

Leads from lateral ventricle into 3rd ventricle

Question 27

Third ventricle

Answer 27

Midline between the diencephalons (thalamus, hypothalmus). Contains CSF

Question 28

Fourth ventricle

Answer 28

Between pons/medulla and cerebellum, has medial foramen and 2 lateral foramen to subarachnoid space

Question 29

Cerebral aqueduct

Answer 29

In midbrain, connect 3rd and 4th ventricle