Neuroanatomy 1 Flashcards Preview

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Flashcards in Neuroanatomy 1 Deck (51)
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1
Q

How many pairs of cranial nerves are there?

A

12

2
Q

How many pairs of spinal nerves are there?

A

31`

3
Q

At what stage of development do the primary vesicles appear?

A

4 weeks

4
Q

What are the 3 primary vesicles?

A

prosencephalon; mesencephalon and rhombencephalon

5
Q

What secondary vesicles develop from the prosencephalon?

A

telencephalon; diencephalon

6
Q

What secondary vesicles develop from the rhombencephalon?

A

metencephalon and myelencephalon

7
Q

What does the telencephalon develop into?

A

the cerebral hemispheres

8
Q

What does the diencephalon develop into?

A

thalamus and hypothalamus

9
Q

What does the mesencephalon develop into?

A

midbrain

10
Q

What does the metencephalon?

A

pons and the cerebellum

11
Q

What does the myelencephalon develop into?

A

medulla oblongata

12
Q

What are the 4 types of glial cell in the CNS?

A

astrocytes; oligodendrocytes; microglia and ependymal cells

13
Q

What are the functions of astrocytes?

A

support; maintaining the blood-brain barrier and homeostasis

14
Q

Why is the support function of the glial cells in the CNS important?

A

There is no connective tissue in the CNS

15
Q

How do astrocytes appear histologically?

A

star-shaped- lots of processes (astro- like astronaut)

16
Q

What is the function of oligodendrocytes?

A

produce myelin

17
Q

What are the spaces in between sheaths of myelin known as?

A

nodes of Ranvier

18
Q

What is one major difference between Schwann cells and oligodendrocytes?

A

oligodendrocytes have multiple processes in order to myelinate multiple axons whereas Schwann cells only myelinate one axon

19
Q

What is the lineage of microglia?

A

haemopoietic

20
Q

What is the function of microglia?

A

immune monitoring and antigen presentation

21
Q

How does the appearance of microglia change once activated?

A

they lose their short processes and become rounder

22
Q

What are ependymal cells?

A

ciliated cuboidal/columnar epithelial cells

23
Q

Where are ependymal cells found?

A

lining the ventricles and choroid plexus

24
Q

What is the function of the gyri and sulci?

A

to increase the SA of grey matter

25
Q

What is the name for a deeper sulcus?

A

fissure

26
Q

What is found whithin the white matter?

A

axons and their support cells

27
Q

What is foudn within the grey matter?

A

nuerons, cell processes, synapses and supprt cells

28
Q

How is grey matter organised in the spinal cord?

A

posterior and anterior horns (additional lateral horns at some levels)

29
Q

How is white matter organised in the spinal cord?

A

posterior; lateral and anteiror columns

30
Q

What does the central sulcus separate?

A

the frontal and parietal lobes

31
Q

What separates the hemispheres of the brain?

A

longitudinal fissure

32
Q

What does the lentiform nucleus form part of?

A

basal ganglia

33
Q

What is the function of the internal capsule?

A

main “information highway” between the cortex and spinal cord

34
Q

What lies inferior to the lentiform nucleus?

A

hippocampus

35
Q

What is found directly superior to the lateral ventricles?

A

fornix and corpus callosum

36
Q

What is the cingulate gyrus invovled in?

A

pain sensation

37
Q

Where is the cingulate gyrus found?

A

superior to the corpus callosum

38
Q

What separates the parietal and occipital lobes?

A

the parieto-occipital sulcus

39
Q

What joins the 3rd ventricle to the lateral ventricle?

A

interventricular foramen

40
Q

What joins the right and left thalami?

A

interthalamic adhesion

41
Q

What is found posterior to the thalamus?

A

pineal gland

42
Q

What is the pineal gland involved in?

A

diurnal rhythms

43
Q

What separates the frontal lobe from the temporal lobe?

A

lateral sulcus

44
Q

What is the function of the calcarine sulcus?

A

contains the primary visual cortex

45
Q

What forms the posterior border of the temporal lobe?

A

a line from the parieto-occipital sulcus to the preoccipital notch

46
Q

What is the function of the insula?

A

pain

47
Q

What are the 3 layers of meninges?

A

dura mater; arachnoid mater; pia mater

48
Q

What does the dura mater attach to?

A

the periosteum of the skull

49
Q

Where is the myenteric plexus found?

A

between circular and longitudinal smooth muscle layers

50
Q

Where is the submucosal plexus found?

A

submucosa

51
Q

Where do the dural venous sinuses drain into the internal jugular vein?

A

through the jugular foramen