Question

KEEP THIS to study with: COME TO LAB because more may be added to this list Brain Anatomy Cerebral lobes gyrus Frontal sulcus O Parietal Temporal v central sulcus Occipital pre-central gyrus or Primary Motor Cortex "insula deep to temporal) - will not be asked to identity post-central gyrus or Primary Somatosensory Cortex pulel ond parietal lobes longitudinal fissure: separates right and left - transverse fissure: separates - from central sulcus: separates M entral and lobes lateral sulcus: separates and O precentral gyrus: site of_ postcentral gyrus: site of Prefrontal cortex: function and location FYI: Broca's area & Wernicke's area: function and location corpus callosum: location and significance (function) anterior commissure fornix: is a white mater tract associated with Diencephalon: choroid plexus (anterior epithalamus): produces pineal body/gland (posterior epithalamus): produces multonin thalamus hypothalamus: infundibulum & pituitary gland Midbrain corpora quadrigemina o superior colluculi. Handles_ reflexes o inferior colliculi Handles_00h reflexes cerebral peduncle 7 Pons Cerebellum arbor vitae Medulla oblongata Ventricles: Lateral (left & right) 0 3d ventricle 4th ventricle cerebral aqueduct (aqueduct of midbrain) dural sinuses Other Structures: optic chiasma Cranial nerves olfactory (CNI) optic (CN) Meninges dura mater arachnoid pia mater

Answer 1

1.Longitudinal fissure separates right and left hemispheres.

2.Transverse fissure separates cerebrum from cerebellum.

3.Central sulcus separates Parietal lobe and frontal lobe.

4.Lateral sulcus separates frontal ,parietal and temporal lobes.

5.Pre central gyrus -site of primary motor cortex.

6.Post central gyrus -site of primary somatosensory cortex.

7.Prefrontal cortex -function :

●decision making

●Personality expression.

●planning cognitive behaviour.

Location :covers front part of frontal lobe.

8.Corpus callosum :

location- It is found below the cerebral cortex. It is a C shaped nerve fibre bundle .

Function -It connects left and right cerebral hemispheres.

8.Anterior commisure-It is a bundle of crossing fibres that connect olfactory bulb and parts of cerebrum to same areas on opposite side. Itis a white matter tract that joins the 2 temporal lobes of cerebral hemispheres across  the midline. It is placed in front of Fornix.

9.Fornix-is a white matter tract associated with limbic system. It is a C shaped bundle of nerve fibres that act as a major output pathway of hippocampus. It extends from hippocampus to Mammilary bodies of hypothalamus and anterior nuclei of thalamus ,forming an arch over thalamus.

Diencephalon

10.Choroid plexus -It is cell plexus producing CSF. It is secreted by choroid plexus in ventricles. Choroid plexus is made of modified ependymal cells

11.pineal body -produses melatonin. Pineal gland is a small pea shaped gland.Melatonin regulates sleep cycles (circadian rhythm ).It also regulates immune system, menstruation and function as an antioxidant.

12.Thalamus -It is a small structure above the brain stem between cerebral cortex and midbrain.

Function : relay motor and sensory signal stock cerebral cortex.

13.Hypothalamus -Small part of brain.It is located at base of brain.

Function:●Releases many hormones

●Regulate body temperature

Mid brain

14.Superior colliculi -handles eye reflex.

15 Inferior colliculi -handles ear reflexes.

16.Cerebral peduncle -They are 2 stalks.They join  cerebrum to brain stem.

Function : They transport nerve impulses from higher part of brain to lower part.

17.Arbor vitae -(tree of life)

This describes the appearance of the white matter that serves to bring sensory and motor information to cerebellum.

18 .Optic chiasma -It is an X shaped structure below brain ,where optic nerves cross over.