Development & Embryology

Question 1

Neurulation

Answer 1

beginning of the formation of the CNS, process of neural plate forming the neural tube

Question 2

Neural Tube Defects

Answer 2

Spina Bifida & Encephalocele

Question 3

Tracts that make up Spinal Nerve

Answer 3

General Somatic Afferent
General Visceral Afferent
General Somatic Efferent
General Visceral Efferent

Question 4

Dermatome

Answer 4

area of skin supplied by a signal spinal nerve or spinal segment

Question 5

Myotome

Answer 5

sum of all muscle fibres supplied by a single spinal nerve

Question 6

Neural tube creates?

Answer 6

prosencephalon
mesencephalon
rhombencephalon

Question 7

prosencephalon

Answer 7

telencephalon & Diencephalon

Question 8

Mesencephalon

Answer 8

mesencephalon

Question 9

rhombencephalon

Answer 9

metencephalon

myelencephalon

Question 10

telecephalon

Answer 10

cerebral hemisphere

Question 11

diencephalon

Answer 11

thalamus, hypothalamus, subthalamus

Question 12

mesencephalon

Answer 12

midbrain

Question 13

Metencephalon

Answer 13

pons & cerebellum

Question 14

myelencephalon

Answer 14

medulla

Question 15

what connects the brains 2 hemispheres?

Answer 15

corpos callosum

Question 16

what type of fibres are the corpos callosum

Answer 16

commissural

Question 17

what fibres connect areas within one hemisphere?

Answer 17

association

Question 18

what fibres project to and from the cortex

Answer 18

projection

Question 19

what are the 3 meningeal layers

Answer 19

dura, arachnoid, pia

Question 20

what are the 3 spaces?

Answer 20

epidural (potential), subdural (potential), arachnoid (real)

Question 21

what can you find in the epidural space?

Answer 21

middle meningeal artery

Question 22

where would you find a:
1st order neuron
2nd order
3rd order

Answer 22

body - spinal cord
spinal cord to brain stem
thalamus to cortex

Question 23

what type of sensory information crosses midline at the spinal cord?
medulla?

Answer 23

pain and temp @ spinal cord

Discriminative touch, vibration, pressure

Question 24

2 Dural reflections of the skull

Answer 24

falx cerbri & tentorium cerebelli

Question 25

where are arachnoid granulations found and what do they do ?

Answer 25

found surrounding the sagittal sinus & in the longitudinal fissure , reabsorption of CSF

Question 26

what connects the arachnoid and pia mater?

Answer 26

arachnoid trabeculae

Question 27

What does Pia form?

Answer 27

a perivascular space by ensheathing the blood vessels

Question 28

explain what would be seen in an epidural hematoma

Answer 28

accumulation of blood between skull and dura due to a rupture of the middle menigeal artery, produces a len-shaped biconcave hematoma

Question 29

explain what would be seen in a subdural hematoma

Answer 29

accumulation of venous blood between dura and arachnoid, crescent shaped, can be acute or chronic

Question 30

explain what is seen in a subarachnoid hemorrhage

Answer 30

accumulation of blood in CSF space, blood is seen in sulci and gyri, can be non-traumatic or traumatic

Question 31

what is the limbic lobe comprised of?

Answer 31

cingulate gyrus & parahippocampal gyrus

Question 32

what produces CSF

Answer 32

ependymal cells of the choroid plexus

Question 33

what connects the 3rd and 4th ventricle

Answer 33

cerebral aqueduct