5.1 Organization of the Brain (Dental Decks also used) Flashcards Preview

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Flashcards in 5.1 Organization of the Brain (Dental Decks also used) Deck (62)
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1

The white matter of the spinal cord contains tracts that provide and recieve information to and from the brain.  What is the function of the ascending tracts and descending tracts

ascending travels toward the brain - sensory 

descending travels away from the brain - motor

2

Which ascending (sensory) tract of the spinal cord has the function of: pain, temperature, and crude touch to the opposite side?

Lateral spinothalamic 

3

Which ascending (sensory) tract of the spinal cord has the function of: crude touch and pressure?

Anterior spinothalamic 

4

Which ascending (sensory) tract of the spinal cord has the function of: discriminating touch and pressure sensations?

DCML

Fasciculus gracilis 

Fasciculus cuneatus 

5

Which ascending (sensory) tract of the spinal cord has the function of: unconscious kinesthesia?

Anterior and posterior spinocerebellar 

6

What lies in the longitudinal fissure and separates the cerebral hemispheres?

Falx cerebri

7

What separates the occipital lobe of the cerebrum and the cerebellum?

Tentorium cerebelli

8

What separates the two lobes of the cerebellum?

Falx cerebelli

contains occipital sinus

9

What is the epidural space?

over the dura matter

epidermal hematoma = accumulation of blood from a torn meningeal artery

10

What is the subdural space?

a closed space between the dura matter and the arachnoid membrane

often the site of hemorrhage after head trauma, associated vessel is the bridging vein

11

What is the associated vessel in a subarachnoid hemorrhage?

Circle of Willis 

Berry Aneurysm

12

What CN's arise in the pons?

  • Trigeminal - CN V
  • Abducens - CN VI
  • Facial - CN VII

5,6,7

13

What CN's are attached to the medulla oblongata?

  • Glossopharyngeal - CN IX
  • Vagus - CN X
  • Spinal Accessory - CN XI
  • Hypoglossal - CN XII

9 - 12

14

What in the midbrain helps to control movement, a lession of it will cause Parkinson's Disease?

substantia nigra

15

What part of the brain serves as an exit tract for CN V?

Pons "bridge"

16

What area in the medulla oblongata, is involved in regulating sleep and arousal, pain perception, and includes vital centers that regulate breathing and heart activity?

reticular formation 

central core of gray matter

17

Where are the inferior and superior sagittal sinuses found?

Falx cerebri

18

What contains the straight, transverse, and superior petrosal sinuses?

Tentorium cerebelli

19

What is the thin, wrinkled gray matter covering each cerebral hemisphere?

cerebral cortex

20

What layer of the cerebrum is a thick core of white matter? 

cerebral medulla

21

What is the function of the cerebellum?

control of movement and balance

22

What lines most of the ventricular system of the CNS?

ependymal cells 

23

What cells provide structural support in the CNS?

astrocytes

24

What are modified ependymal cells that form the inner layer of the choroid plexus, and secrete CSF into the ventricles?

Choroidal Cells

25

What support cell bodies in ganglia within the PNS?

satellite cells 

26

What is the NT of preganglionic sympathetic neurons?

acetylcholine

27

In which system of the ANS are the preganglionic neurons relatively short and the postganglionic axons relatively long?

Sympathetic

28

What is the NT of the postganglionic sympathetic axons?

NE except for adrenal medulla and sweat glands

29

What nerves is the parasympathetic system dervided from?

  • CN III
  • CN VII
  • CN IX
  • S2-S4

30

Through what opening do the lateral ventricles communicate with the 3rd ventricle?

interventricular foramen (foramen of Monro)