Nervous Tissue 2

Question 1

what are the invaginated folds of pia matter that are rich in capillaries and are covered by simple cuboidal cells

Answer 1

choriod plexus

Question 2

choriod plexus produce what

Answer 2

CSF

Question 3

what is the specialized tissue that projects as elaborate folds with many vili into the four ventricles of the brain

Answer 3

choriod plexus

Question 4

what ventricles are choriod plexi found

Answer 4

roof of the 3rd and 4th ventricles

part of the walls of the two lateral ventricels

Question 5

what does each villus of CP contain

Answer 5

a thin layer of vascularized pia matter that is covered by cuboidal ependymal cells

Question 6

what is the function of the choriod plexus

Answer 6

to remove water from blood and release it as CSF

Question 7

where does the CSF fill

Answer 7

• ventricles
  central canal of S.C
• subarachnoid space
• perivascular spaces

Question 8

what acts as a mechanical shock absorber and is important for CNS metabolism

Answer 8

choriod plexus

Question 9

the three connective tissues of neruons

Answer 9

endoneurium
perineurium
epineurium

Question 10

what c.T. layer consisy of a thin layer of reticular fibers that are produced by schwann cells

Answer 10

endoneruium

Question 11

what are associated with individual nerve fibers

Answer 11

endoneruium

Question 12

what forms a barrier to passage of most macromolecules

Answer 12

perineruium

Question 13

what protects nerves from aggregation

Answer 13

perinerium

Question 14

what is the outermost tissue of a peripheral nerve

Answer 14

epineruium

Question 15

what carries the blood vessels that supply the nerves

Answer 15

epineurium

Question 16

what are clusters of nerve cell bodies in the PNS called

Answer 16

Ganglion

Question 17

two types of ganglia

Answer 17

sensory

autonomic

Question 18

which ganglia are pseudounipolar neurons and are large and close together and have thick fascicles

Answer 18

sensory ganglia

Question 19

what ganglia are sympathetic and paraypmathetic and are multipolar and are small and far apart

Answer 19

autonomic ganglia

Question 20

what is the part of the PNS that conducts impulses to the smooth, cardiac, and glandular epithelium

Answer 20

ANS

Question 21

what is the ANS has postganglionic fibers

Answer 21

sympathetic

Question 22

what in the ANS has both pre and postganglion fibers

Answer 22

parasympathetic

Question 23

what kind of outflow does sympathetic have

Answer 23

thoracolumbar

Epi

Question 24

what kind of outflow does parasympathetic have

Answer 24

craino sacral outflow

Ach

Question 25

what plexus in the enteric NS control perestalsis movements and secratory functions of the gut

Answer 25

myentreric and submucous

Question 26

what is a disease that results in mega colon ( always dilated colon)

Answer 26

Hirschsprung Disease

Question 27

what has the arrest of neural crest cells to one segment of the distal colon and has the absence of the enteric system

Answer 27

Hirschsprung Disease

Question 28

without an enteric system ( no nerve supply to the g.i. tract) what cannot happen

Answer 28

peristalsis

Question 29

how long is the spinal cord

Answer 29

45 cm

Question 30

where does the spinal cord start from

Answer 30

the medulla oblongota

Question 31

the posterior root of the spinal cord is

Answer 31

dorsal roots