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Neuro Anatomy > Week 2 - Sectional Anatomy > Flashcards

Week 2 - Sectional Anatomy Flashcards

1
Q

What fibres pass through the corpus collosum?

A

Commissural fibres

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2
Q

What are the 4 parts of the corpus collosum?

A

Trunk, Genu, Splenium and Rostrum

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3
Q

What is the septum pellucidum?

A

Thin sheet which lies in mid sagittal plan and separates the anterior horns of 2 lateral ventricles

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4
Q

Where is he septum pellucidum?

A

Continuous superiorly with corpus callosum and inferiorly with the fornix
Extends posteriorly as far as interventricular foramen

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5
Q

What is the fornix?

A

Bundle of fibres which links hippocampus with mamillary bodies of the hypothalamus

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6
Q

What is the basal ganglia?

A

Collection of neuronal cell bodies within the cerebral hemisphere

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7
Q

What is the name given to collection of neural cell bodies in CNS?

A

Nucleus
Except the basal ganglia

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8
Q

What is the thalamus?

A

Is a sensory relay area made up of smaller masses of grey matter nuclei
Most general sensory info from body relays to a nucleus called ventro-postero-lateral VPL nucleus of the thalamus

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9
Q

What are some of the functions of the hypothalamus?

A

Controls body temp., fluid and food intake, controls endocrine system and autonomic nervous system, sleep awareness, emotional expression and aggression, sexual arousal

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10
Q

What fold of dura mater is overlying the pituitary gland?

A

Diaphragma sellae

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11
Q

Where are the colliculi in relation to the pineal gland?

A

Below the pineal gland

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12
Q

What is 8?

A

Caudate nucleus

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13
Q

What is 2?

A

Lateral ventricle

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14
Q

What is 10?

A

Internal capsule

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15
Q

What is 6?

A

Thalamus

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16
Q

What is 5?

A

Putamen

17
Q

What structures make up the basal ganglia?

A

Caudate nucleus, globus pallidus, subthalamic nucleus, putamen and substantia nigra

18
Q

What fibres make up the internal capsule?

A

Projection fibres
Made up of myelinated axons

19
Q

What are the 3 parts of the internal capsule?

A

Anterior, Genu and Posterior

20
Q

What blood vessel supplies the internal capsule?

A

Middle cerebral artery

21
Q

What group of structures if the substantia nigra part of?

A

Basal ganglia

22
Q

Where is the red nucleus is relation to the substantia nigra?

A

Posterior to

23
Q

What fibres does the cerebral peduncles contain?

A

Projection fibres

24
Q

Which aspect of the spinal cord receives sensory nerve fibres?

A

Dorsal horn

25
Q

What aspect of the spinal cord receives motor nerve fibres?

A

Ventral horn

26
Q

Why does the size of the ventral grey horn vary along the spinal cord?

A

At cervical and lumbar regions for the brachial and lumbar plexuses

27
Q

What is the name of the hole in the middle of the spinal cord and what does it contain?

A

Central canal
Contains CSF as joins with the ventricular system of the brain

28
Q

What are the major motor and sensory white matter tracts?

A

Dorsal column
Spinothalamic
Corticospinal

29
Q

Describe the corticospinal tract

A

Starts in the motor cortex (precentral gyrus)
Corticobulbar fibres go to contralateral cranial n nuclei
Decussates at pyramids
LMN in ventral horn

30
Q

Describe the spinothalamic tract

A

Carries pain and temp. sensation
1st order neuron in grey matter of dorsal horn
2nd order neuron crosses at spinal level and becomes the lateral spinothalamic tract
2nd order neuron ends at thalamus
3rd order neuron passes through IC and radiates to post central gyrus

31
Q

Describe the dorsal column

A

Carries sensory info of joint position, proprioception, vibration and localisation
1st order neuron ends when synapses in medulla with 2nd order neuron
Desiccates at medulla - becomes medial lemniscus
3rd order neuron in thalamus - IC - post central gyrus

Neuro Anatomy (4 decks)

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