19.2 Flashcards Preview

Week 19 > 19.2 > Flashcards

Flashcards in 19.2 Deck (12):
1

The ventricles and central canal of the spinal cord are lined by ___ cells (low ___ or ___ cells).

Ependymal cells - low columnar or cuboidal cells.

2

Some ependymal cells are ___.

Ciliated

3

Ependymal cells are different to epithelial cells in that they have no ___ ___.

Basement membrane.

4

The three components of the cytoskeleton are ___, ___ ___ and ___

Actin, intermediate filaments and microtubules.

5

In neurons, there is a high level of ___ production - in cytology/histology you can see ___ bodies.

Protein production.
Nissl bodies - rough ER and free ribosomes.

6

Glia are excitable - there are modulations in intracellular ___ (___ waves).

Calcium!
Calcium waves.

7

Glia communicate like neurons by releasing ___.

Gliotransmitters

8

Neurons are ___ by the glial calcium wave.

Inhibited

9

___ are the main myelinating cells in the CNS and ___ ___ are the main myelinating cells in the PNS.

Oligodendrocytes in CNS.
Schwann cells in PNS.

10

The processes from oligodendrocytes wrap around parts of ___ axons.

Multiple!

11

Schwann cells wrap around __ axon only.

One!

12

Myelin ___ axon diameter and increases speed of ___.

Increases axon diameter and increased speed of conduction.