Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

PHARM 204 > Lect 14 - CNS (Blood) > Flashcards

Lect 14 - CNS (Blood) Flashcards

1
Q

What supplies blood to the brain? Where do they ascend?

A

Carotid Arteries

Common Carotids ascend the nect

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Carotid Arteries divide to form

A

Internal Carotids
External Carotids

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Carotid Sinus (Where? What does it contain?)

A

Base of the internal carotid artery

Contains baroreceptors and chemoreceptors

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Where are he baroreceptors and chemoreceptors (Heart)

A

In the Carotid Sinus

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

External Carotids (Function)

A

Supplies blood to the neck and outside of the skull

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

External Carotids (Branches)

A

Lingual Artery
Facial Artery
Occipital Artery
Superficial Temporal Artery

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Internal Carotids (Function)

A

Enters the skull to supply blood to the brain

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Internal Carotids (Branches)

A

Ophthalmic Artery (Eye)
Anterior Cerebral Artery (Frontal/Parietal)
Middle Cerebral Artery (Midbrain/Lateral Cerebrum Surface)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Vertebral arteries fuse to form what?

A

Forms Basilar Artery

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Basilar Artery branches to form

A

Left and Right Posterior Cerebral Arteries

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Posterior Cerebral Arteries are connected by? Where are they connected to?

A

Posterior Communicating Arteries

Connects with internal carotid arteries

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Starting from the Vertebral Artery describe the branching of blood supply in the brain

A

Anterior Cerebral Artery x2 –> Anterior Communicating –> Middle Cerebral Arteries –> Posterior Communicating Arteries –> Posterior Cerebral –> Loops Again

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Function of Anterior and Posterior Communicating Arteries

A

Completes the circle of Willis by joining Cerebral Anterior/Posterior arteries

Acts as a safety mechanism by bringing blood to the brain from Carotids and Vertebral Arteries

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Anterior Communicating Arteries

A

Connects left and right anterior cerebral arteries

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Cerebral Arterial Circle

A

Ring like anastomosis between basilar and carotid arteries

Circle of Willis

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What three main arteries supply the cerebellum?

Where do they branch off from?

A

Superior Cerebellar
Anterior Inferior Cerebellar
Posterior Inferior Cerebellar

Branches off Basilar Artery to supply Pons, Medulla, Midbrain

17
Q

What forms the Cerebral Arterial Circle (Circle of WIllis)

A

Anterior Communicating Artery
Anterior Cerebral Artery
Posterior Communicating Artery
Posterior Cerebral Artery

18
Q

Backup Blood Supply for the Brain

A

Vertebral –> Basilar –> Posterior Cerebral
–> Posterior Communicating Arteries

Internal Carotid Arteries –> Anterior Cerebral / Middle Cerebral

19
Q

Anterior Cerebral Arteries vs Middle Cerebral Arteries

A

Anterior supplies Frontal/Parietal Lobe
Involved in Cerebral Arterial Circle

Middle supplies Midbrain and lateral surfaces of cerebrum

20
Q

Middle Cerebral Artery (What cortexes are being supplied)

A

Covers frontal, parietal, and temporal lobes
Mainly focuses on temporal lobe

Posterior Parietal Cortex
Auditory Cortex

Middle Region of the brain

21
Q

Middle Cerebral Artery (The cortices being supplied effect what?)

A

Supplies blood to the Motor and Somatosensory cortices that handle the Trunk (Body), Face, Upper Extremities (Arms)

22
Q

Anterior Cerebral Artery (What cortexes are being supplied)

A

Inferior to frontal lobe
The Medial surface of the frontal and parietal lobes (Deep within the brain)

23
Q

Anterior Cerebral Artery (The cortices being supplied effect what?)

A

Supplies blood to the Motor and Somatosensory cortices that handle the Lower Extremities (Legs)

24
Q

Posterior Cerebral Artery (What cortexes are being supplied)

A

Inferior and Medial of the Temporal Lobe
Hippocampus
Inferior and medial of the Occipital Lobe
Thalamus

25
Q

What is CPP

A

Cerebral Perfusion Pressure

The pressure of the blood being delivered to the brain at the capillary level

26
Q

What is ICP

A

Intracranial Pressure

Pressure inside the skull, caused by brain tissues and fluids

27
Q

How does ICF change?

A

Cranial Cavity has a fixed volume

ICP is changed by changes in volumes of tissues/fluid

28
Q

How to calculate CPP

A

CPP = MAP - ICP

Mean Arterial Pressure - Intracranial Pressure

29
Q

Small changes of ICP

A

Can be handled by displacing Cerebral Spinal fLuid into the spinal cord = Decreases ICP by a bit

30
Q

Larges changes of ICP

A

The skull must lose volume, however, there is a limit to how much it can lose as there is only a fixed volume of blood, brain, and CSF

If change is too larged CPP is rendered inadequate and blood can not flow through brain

31
Q

How can a mass or obstruction in the cranium cause death

A

Causes an increase in intracranial pressure –> Decreased CPP –> Not enough blood flow in brain (Global Brain Ischemia)

PHARM 204 (20 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions