spinal cord + nerves

Question 1

type of the posterior (dorsal) root of the spinal nerve

Answer 1

sensitive (formed by dendrites and axons of the neurons from the spinal ganglion)

Question 2

type of anterior (ventral) root of the spinal nerve

Answer 2

motor (formed by the axons of the medullar somatic-motor neurons)

Question 3

type of the trunk of the spinal nerves

Answer 3

mixt

Question 4

total of spinal nerves

Answer 4

31 pairs

Question 5

numbers of cervical spinal nerves

Answer 5

8 pairs

Question 6

numbers of thoracic spinal nerves

Answer 6

12 pairs

Question 7

numbers of lumbar spinal nerves

Answer 7

5 pairs

Question 8

numbers of sacral spinal nerves

Answer 8

5 pairs

Question 9

numbers of coccygeal spinal nerves

Answer 9

1 pair

Question 10

name of the branches

Answer 10

dorsal, ventral, meningeal, communicating white and grey

Question 11

type of the dorsal branch

Answer 11

sensitive, motor and vegetative fibers

Question 12

type of the ventral branch

Answer 12

sensitive, motor and vegetative fibers

Question 13

type of the meningeal branch

Answer 13

vegetative fibers

Question 14

type of the white communicant

Answer 14

vegetative fibers

Question 15

type of the grey communicant

Answer 15

vegetative fibers

Question 16

cervical plexus formed of

Answer 16

c1-c4

Question 17

brachial plexus formed of

Answer 17

C5-Th1 (4)

Question 18

lumbar plexus formed of

Answer 18

L2-L4

Question 19

Sacral plexus formed of

Answer 19

L5-S4 (5)

Question 20

coccygeal plexus formed of

Answer 20

S4-S5

Question 21

which does not form a plexus

Answer 21

T2-T12 (10)

Question 22

from the brachial plexus which nerves detach

Answer 22

medial, ulnar and radial nerves

Question 23

from the lumbar plexus which nerves detach

Answer 23

femoral nerves

Question 24

from the sacral plexus which nerves detach

Answer 24

pudendal and sciatic nerves

Question 25

The menix of the spinal cord

Answer 25

dura matter, arachnoid and Pia mater

Question 26

dura mater of the spinal cord

Answer 26

formed by dense connective tissue weakly vascularized, unnerved by the meningeal branches of the spinal nerves

Question 27

arachnoid of the spinal cord

Answer 27

is connective tisse, avascular,

between it and Pia mater is the cerebrospinal fluid

Question 28

pia mater

Answer 28

is connective tissue with nutritive vascularization

Question 29

grey matter of the spinal cord

Answer 29

located at the interior, formed of nervous cells and fibers
the anterior sulcus contains somatic motor neurons
posterior sulcus contains somatic sensitive neurons
contains the central part (grey commissure) which has in the interior the ependymal duct

Question 30

the white matter of the spinal cord

Answer 30

at the exterior; formed by myelinated nervous fibers

Question 31

The somatic medullar reflexes are of 2 types

Answer 31

monosynaptic and polysynaptic reflexes

Question 32

the monosynaptic reflexes of the medullar reflex arch is constituted by

Answer 32

2 neurons

they are reflexes of extension (also called myotonic or osteotendinous reflexes)

Question 33

the polysnaptic reflexes of the medullar reflex arch

Answer 33

are also called flexion reflexes or nociceptive reflexes
as response to the action of harmful situations
at least one intercalary neuron

Question 34

the vegetative medullar reflexes

Answer 34

close in the lateral sulcus of the grey medullar matter
receptors are interoceptors
the effectors are glands or visceral muscles (pupillary dilator)

Question 35

2 functions of the brainstem

Answer 35

conducting function (white matter) and the reflex function (somatic reflexes)