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A&P Practical
Brain
| Question | Answer |
|---|---|
| What is meninges? | Outer protective layers of brain |
| What is the names of the 3 outer meninges in order? | Dura mater- outside Arachnoid layer- inside of outside layer, shiny Pia Mater- directly on surface of brain. |
| Cerebrum | whole majority of brain, left and right hemispheres. |
| 2 Fissures names? | Longitudinal and Transverse Fissures. |
| Where are frontal lobes located? | Two tips of the front of the brain, above olfactory bulbs |
| Where are the Parietal Lobes located? | Midsection of brain across top. |
| Where are the Occipital Lobes located? | Two stubs in the back of brain, before the Cerebellum |
| Where are the temporal lobes located? | On the sides, you'll see a divot/shallow, where the eye sockets go. Think of your temples. |
| Where is the corpus collosum found? | Right above the fornix and septum pellucidum. If cutting into longitudinal fissure, you'll see it as the white matter there. |
| What is sulci and sulcus? What is the difference between them? | Sulci is plural, sulcus singular. These are the low valleys of the brain's surface. |
| What is gyri and gyrus? What is the difference between them? | Gyri is plural, gyrus singular. These are the hills, high spots of the brain's surface. |
| What is the cerebellum? | Smaller spherical unit behind the cerebrum. |
| There cerebrum is longitudinally split into 3 parts. What are their names? | The left and right cerebellar hemispheres, and the Vermis is the center one. |
| Where is the Corpora Quadrigemina, and what parts make it up? | The Corpora Quadrigemina is right below/behind the occipital lobes. (baby's butt) The Superior Colliculi (baby's butt) is on top, with smaller Inferior Colliculi on either side below. |
| Where is the Pineal Gland? | Looking right in front of the Corpora Quadrigemina, the Pineal Gland looks like a penis sticking up in between the right and left hemispheres. |
| grey matter | Processes information |
| White matter | Relays information |
| Olfactory bulb and tract location? | Two bulb looking pieces sticking out from underneath the frontal lobes. The stalks of these are the tracts. |
| Where is the optic system found, and what parts are in it? | Two nerve endings behind olfactory tracts, for the eyes. The connecting ridge is the optic chiasma, and the two stubs that go into the brain are the optic tracts. |
| What is in the middle right behind the optic chiasma? | The Infundibulum, gumdrop shaped, with stalk of pituitary gland showing. |
| What surrounds the infundibulum? | The mammillary body |
| What two bodies surround the back of the mammillary body | The cerebral peduncles, with oculomotor nerves, one in each side, left and right. |
| what and where are the three main parts of the brain stem leaving the brain? | The Pons is the bump of the brain stem going into the Medulla Oblongata, which then goes into the Spinal cord. |
| Cranial Nerves | Olfactory, optic, oculomotor, trochlear, and trigeminal. |
| Where is the olfactory nerves? | In the nasal cavity, go from there to the olfactory bulbs, then tracts |
| Where is the Optic nerves? | Right behind olfactory tracts, on the optic chiasma and tracts |
| Where is the oculomotor nerves? | On the cerebral peduncles, (mid brain) |
| Where is the Trochlear nerve? | Look for long skinny nerves that go on outside of pons on either side. |
| Where is the Trigeminal nerve? | Look for big, long nerve on outside of pons on either side, probably outside of the trochlear nerves. |
| (Side angle slice of brain) Where is the corpus collosum? | Look for upper lip under cerebral hemisphere |
| (side angle slice of brain) Where is the septum pellucidum? | Front ventricle in-between corpus collosum and the fornix, sometimes looks like an upside-down Nike symbol. |
| (side angle slice of brain) Where is the Fornix? | Look under the central hemisphere for an upper lip. This is the corpus collosum. Follow this to the front, past the septum pellucidum, to the lower lip. This is the fornix. |
| (side angle slice of brain) Where is the intermediate mass of the thalamus? Where is the hypothalamus? | Look for the circle under the fornix. Boom, you got it. Hypothalamus is underneath the intermediate mass. |
| (side angle slice of brain) Where is the 3rd ventricle? | Entire mid area cavity in the brain. |
| (side angle slice of the brain) Where is the lateral ventricle(s)? | Follow in between corpus collosum and fornix, from the septum pellucidum backwards. The open cavity is the lateral ventricle. There's two, one on each side of the brain. |
| (side angle slice of the brain) Where is the cerebral aqueduct? | Underneath the pineal body from the third ventricle to the fourth ventricle. |
| (side angle slice of the brain) Where is the Central Canal of the spinal cord? | Really? I mean, come on. |
| (side angle slice of the brain) Where is the Arbor Vitae? | White matter, tree of the cerebellum. |
| (side angle slice of the brain) Where is the Cerebellar Cortex? | Grey matter surrounding the arbor vitae like cauliflower. |
| (side angle slice of the brain) Where is the 4th ventricle? | The opening under the cerebellum. |
| What is the septum? | Two parts along the middle of interior brain? |
Created by:
JoshuaB5