P1 ANATOMY DEMO

Question 1

spinal segment that does not have a dermatome

Answer 1

C1

Question 2

brachial plexus is formed by

Answer 2

ventral rami of C5 to T1

Question 3

sensation of the face is carried by which nerve

Answer 3

by trigeminal nerve

Question 4

mention the 3 trigeminal nerve branches

Answer 4

• ophthalmic
• maxillary
• mandibular

Question 5

dorsal root ganglion will carry which type of information

Answer 5

sensory information

Question 6

ventral root ganglion will carry which type of information

Answer 6

motor information / commands

Question 7

what is a dermatome

Answer 7

dorsal root ganglion will carry which type of information

Question 8

why is it the if we have only 1 spinal nerve injured
there will be no significant area of numbness

Answer 8

due to the overlapping between the spinal nerves

Question 9

Dermatome of C5

Answer 9

lateral side of the elbow

Question 10

dermatome of C7

Answer 10

DORSAL SURFACE OF MIDDLE finger

Question 11

T1 dermatome

Answer 11

medial side of elbow

Question 12

T4 dermatome

Answer 12

midclavicular line at the level of the nipple

Question 13

T10 dermatome

Answer 13

level of umbilicus

Question 14

L3 dermatome

Answer 14

medial femoral condyle above the knee

Question 15

L4 dermatome

Answer 15

over the medial malleolus

Question 16

L5 dermatome

Answer 16

dorsum of the foot over the 3rd metatarsal phalangeal joint

Question 17

S1 dermatome

Answer 17

lateral aspect of the heel ( little toe )

Question 18

S4-S5 dermatome

Answer 18

perianal area

Question 19

which dorsal nerve root is affected in this patient

Answer 19

T3

Question 20

if there is numbness in this area , which dermatome is affected
( yellow arrow )

Answer 20

C8

Question 21

functional unit structure of the nervous tissue

Answer 21

neuron

Question 22

function of neurons

Answer 22

reception , integration & motor functions

Question 23

function of neuroglial cells

Answer 23

support & protection

Question 24

cytoplasmic processes in the neuron that are responsible for receiving stimuli

Answer 24

dendrites

Question 25

impulses received by dendrites are transmitted to

Answer 25

soma / cell body

Question 26

cytoplasmic process in the neuron that are responsible for conducting impulses away from the cell body

Answer 26

axon

Question 27

golden brown irregular granules that increase with age

Answer 27

inclusions / lipofuscin

Question 28

inclusions / lipofuscins are remnants of

Answer 28

lysosomal enzymatic activity

Question 29

cytoskeletal components that are unique to nerve cells

Answer 29

neurofilaments

Question 30

fat like substance covering axons seen in CNS & PNS

Answer 30

myelin

Question 31

myelin in the CNS is produced by

Answer 31

Oligodendrocytes

Question 32

myelin in the PNS is produced by

Answer 32

Schwann cells

Question 33

main types of neurons

Answer 33

• bipolar
• multipolar
• pseudo-unipolar

Question 34

pseudo-unipolar nerves are seen at

Answer 34

dorsal root ganglion

Question 35

bipolar nerves are seen at

Answer 35

• retina
• olfactory & spiral ganglia of cochlea

Question 36

multipolar nerves are seen at

Answer 36

• the Ant. horn cells of spinal cord
• purkinje cells of cerebellum
• pyramidal neurons

Question 37

site of transmission of nerve impulses

Answer 37

synapse

Question 38

mention the 5 types of neuroglial cells

Answer 38

• oligodendrocytes
• Schwann cells
• astrocytes
• microglia
• ependyma

Question 39

star shapes cells in the CNS forming BBB

Answer 39

astrocytes

Question 40

CNS phagocytic cells

Answer 40

microglial cells

Question 41

CNS cells that are responsible for the formation of CSF

Answer 41

EPENDYMA

Question 42

simple cuboidal or columnar ciliated with microvilli cells lines the ventricles of the brain

Answer 42

ependymal cells