Neuroanatomy 3 Flashcards Preview

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Flashcards in Neuroanatomy 3 Deck (28):
0

What is the function of the frontal lobe ?

Controls cognitive tasks and voluntary movements

1

What is the function of the parietal lobe ?

Enables body and touch sensation and understanding where body is in space

2

What is the function of the temporal lobe ?

Controls memory, hearing and language

3

What is the function of the occipital lobe ?

Involved in vision

4

What is the function of the thalamus ?

Important in sensory, motor and cognitive functions with dense connections to the cortex

5

What is the largest part of the basal ganglia?

Corpus striatum - mass of grey matter

6

What is the function of the basal ganglia ?

Involved in control of muscle tone, posture and movement

7

What is the falx cerebri ?

Sheet of dura mater in the great longitudinal fissure

8

What is the internal capsule ?

It's a dense sheet of white matter where many fibres are densely packed

9

What fibres are present in the corpus callosum ?

Commissural fibres

10

What is the tentorium cerebelli ?

Lies between the cerebellum and occipital lobe

11

How does info enter the limbic system ?

Directly by the amygdala and indirectly by the hippocampal formation via the entorhinal area

12

What is the septum pellucidum ?

Forms the medial wall of the lateral ventricles
Thin sheet between corpus callosum

13

What are the folds of the cerebellar cortex called ?

Folia

14

Why does the development of the cerebral hemispheres form a c shape ?

Due to forward migration of temporal lobe

15

What is the corona radiata ?

Cortical afferents and efferents pass through it from the cortex to subcortical areas

16

Examples of subcortical structures..

Corpus striatum
Thalamus
BRAINSTEM
Spinal cord

17

Where is language almost always processed ?

In the left superior temporal and lateral frontal lobe

18

Where is Broca's area ?

Frontal lobe

19

What is Broca's aphasias ?

Inability to produce language but they can understand the language being spoken to them

20

Where is wernickes area ?

Temporal lobe

21

What is wernickes aphasias ?

Produces an inability to understand language

22

What does split brain mean and what are the effects caused by it ?

Lesion to the corpus callosum - used to treat epilepsy
They can't name an object on the left hand side but they can if it is on the right hand side because vision is processed on the opposite side

23

What are the 2 enlargements of the spinal cord ?

Cervical enlargement - provides innervation for upper limbs via brachial plexus

Lumbar enlargement- provides innervation of lower limb by lumbar plexus and sacral plexus

24

What effect does the different lengths of the vertebral canal and spinal cord cause ?

Spinal cord segments are not adjacent to their vertebral bodies - apart from cervical region

25

What is the denticulate ligament ?

Flat membranous continuation of pia mater

26

Why do higher levels of the spinal cord contain more white matter ?

Because ascending tracts gain more fibres at each successive level

27

Which levels of the spinal cord contain a lateral horn and what is present here ?

Thoracic and upper lumbar
Contains preganglionic sympathetic neurons