Midline Sagittal section Flashcards

1
Q

What is the name of this component of the Corpus Callosum?

A

Rostrum

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2
Q

What is the name of this part of the Corpus Callosum?

A

Genu

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3
Q

Name this component of the Corpus Callosum.

A

Body

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4
Q

Name this component of the Corpus Callosum.

A

Splenium

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5
Q

Name this part and its general function.

A

Thalamus.

interconnected with the cerebral neocortex, sensory pathways(besides olfaction) are relayed to the cortex passing through the thalamus acting as a gatekeeper and modulator.

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6
Q

Name this anatomical component. State its function.

A

Mamillary bodies.

Function:

  • recollective memory, as transmitted from hippocampus—>fornix—>mamillary bodies.
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7
Q

Name this and state its function.

A

Inferior Colliculus.

Function: channel for auditory signals and processing, in order for auditory information and visual information to be integrated together.

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8
Q

Name this and state its function.

A

Superior colliculus.

Function:

  • The orientation of the head with eye movement( can be also response due to somatosensory and auditory information).
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9
Q

Name this, state its function and its composition.[3 marks].

A

Tegmentum.

Function:

  • Co-ordination of sensorimotor information.

Components:

  • Substanti nigra, Red nucleus and Periaqueductal gray.
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10
Q

Name this and state its function(2 marks).

A

Anterior commissure.

Function:

  • Interhemispheric communication of visual, auditory and olfactory information between temporal lobes. Whilst connecting both hemispheres along the midline.
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11
Q

Name and state its function.

A

Hypothalamus.

Function:

  • Homeostasis and modulation of the endocrine system through the pituitary gland.
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12
Q

Name this and state its function.

A

Cerebral aqueduct.

Function:

allows cerebrospinal fluid(CSF) to flow between third ventricle and fourth ventricle.

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13
Q

Name this and state its function.

A

Optic chiasm.

Function:

  • The intersection of visual information from the optic nerve.
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14
Q

Name this and state its function.

A

Pineal gland.

Function:

  • To produce melatonin in response to light-dark cycles, increasing levels in response to night.
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15
Q

Name this and state its function.

A

Fornix.

Function:

  • Direct pathway of processes such as memory, cognition, emotion and sexual responses to the hippocampus.
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16
Q

Name this, state its function and state what occurs after in its processes.

A

Fourth ventricle.

Function:

  • After CSF passes to 4th ventricle(steps):
    • —–>foramina(3)
    • —-> subarachnoid space.
17
Q

Name this and state its processes involved, before and after it.

A

Third Ventricle.

Function:

  • lateral ventricle—-> third ventricle—>fourth ventricle.
18
Q

Name this and state its function. And position relative to the third ventricle(2 marks).

A

Lamina Terminalis.

Function:

forms the anterior wall of the third ventricle and anterior boundary of the hypothalamus.

Ventral and anterior to the third ventricle.

19
Q

Name this and state its function.

A

Interthalamic adhesion.

Function:

Connecting the Thalamus of each hemisphere.

20
Q

Name this and state its function.

A

Septum pellucidum.

Function:

  • Forms the anterior wall of lateral ventricles.
    • Separating frontal horns and body of ventricles in the midline.
21
Q

Name this and state its function.

A

Choroid plexus.

Function:

  • Tissues which produces cerebrospinal fluid to the ventricles.
    • Found on the surface of all ventricles.
22
Q

Name this anatomical component and state its function.

A

Cingulate gyrus.

  • Covers corpus callosum.
  • Processing behaviour and emotion regulation.
  • Also involved in autonomic control.