Anatomy of the Brain | Dissectible Model

Ninja Nerds!

Join us in this video where Professor Zach Murphy will be discussing the anatomy of the brain through the use of a dissectible model to get a better view at smaller structures. We hope you enjoy this lecture and be sure to support us below!

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[Ahmad-pszh]

Summary with timestamps:
Grey matter: unmyelinated, cerebral cortex,
sulcus lines and gyrus are parts of brain.
2:00 min Longitudinal fissure, dura septa and fauxa cerebri
central sulcus divides frontal and parietal... behind it is postcentral gyrus (primary somatosensosry cortex), in front of it precentral gyrus (primary motor cortex), in front of that is premotor cortex.
4:45 medial view for sulci and gyri, parietal lobe: parieto occipital sulcus to central sulcus, occipital lobe is parieto occipital sulcus to tranverse fissure .
6:00 temporal lobe: lateral sulcus divides it and parietal.
7:51 close up medial view: cerebral cortex
outside is cerebral cortex it's GREY MATTER.. inside
is WHITE MATTER= MYELINATED

Lateral ventricle, with choric plexus= 43...41 hippocampus
= for memory.
10:16: brain flipped upside down looking at lateral ventricle...
47 = projection fibers, corona radiata moving fibers up to cortex
12:05 diencephelon
insula 5th lobe, corona radiata
40 lateral ventricle and choroid plexus of lateral
ventricle
undearneath basal nuclei, caudate nucleus, washed by lateral ventricle
there to dampen unwanted motor movements.
14:00 White fiber head of duck (FORNIX), collects limbic nucleu, associated with emotion fear anger sexual desires. underneath
is another choroid plexus for 3rd ventricle that makes CSF
12, pineal gland that secretes melatonin for sleep..
eye for duck is thalamus with intermediate mass is eye
14 is bird's beak hypothalamus, and edge of beak is infudibulum
16:30 BRAINSTEAM time... midbrain: sup colliculi: reflexes of head position in response to VISUAL stimuli, inf colliculi: reflexive head movements in response to head movements.
medulla and pons shown

42 sup cerebELLAR peduncle
inf cerebellar peducle...
18:30 white nuclei inferior/posterior to hypothalamus is mamillary body
17: CereBRAL peducles going to cortex
sup(31, connects midbrain to cerebellum) middle(42, pons to cerebellum) and inf (36, medulla to cerebellum)cereBELLAR peduncle
19:40: BRAINSTEM... midbrain, pons, medulla
medulla pyramids for decussation of corticospinal tracts
26: olives, involved in proprioception
20:40 corpus collosum commisary fibers connects the two hemispheres...
septum
21:30 Cranial Nerves begin
Olfactory odoring chemicals send action potentials through cribiform plate through olfactory nerve
22:10 CN 2 OPTIC NERVE, one of left and one of right eye, some of fibers cross and that's where you have OPTIC chiasma. retina through vision relayed to optic canal
23:00 CN 3 Oculomotor comes from sup orbital fissure for eye movements
23:40 Trochlear nerve through sup orbital fissure, also for extraocular movement SO4= superior oblique is trochlear
24:14 TRIGEMINAL... muscles of mastication and sensory of face.. sup orbital, foramen rotundum and ovale. motor
24:50 CN6 Abducens LR= Lateral Rectus 6, motor.
25:15 facial nerve various diff regions.. usually moves through stylomastoid foramen, helps for motor and sensory.
25:50: CN8 VESTIBULO COCHLEAR NERVE HAS TWO BRANCHES VESTIBULAR AND COCHLEAR... BALANCE, HEARING, and MOTOR MOVEMENTS
26:30 CN9 GLOSSOPHARYNGEAL, through Jugular foramen
27:00 VAGUS parasympathetic nerve, through Jugular foramen
27:24 ACCESSORY NERVE, through Jugular foramen, 2 branches..spinal and cranial root
28:00 last nerve hypoglossal nerve coming off of hypoglossal canal and supplies extrinsic muscles of the tongue, mainly motor nerve.

28:35 CEREBELLUM
28:50 vermis of cerebellum and a dural septa CALLED faux cerebelli in between...protecting veins of area.
Grey matter of cortex and then folia too.
29:35 transverse fissure, anotehr dural septa the TENTORIUM CEREBELLI
30:00 WHITE MATTER TREE= ARBOR VITAE... unmyelinated grey matter, mostly purkinje, and also have cerebellar peduncles that are white matter.
31:00 BROCA's AREA left frontal side for speech,
31:15 behind it is primary audiotry cortex..
31:30 wernicke area in parietal and occipital.. imp to put words into a full sentence...
32:10 OCCIPITAL LOBE PRIMARY VISUAL CORTEX.. all those fibers from the optic nerve go to the LGB lateral geniculate body nucleus then to primary visual cortex in the occipital lobe where we can perceive visual stimulus we took in.

[danielgueiros]

Seriously man, it's really impressive the amount of knowledge that you've gathered and even more impressive the clear, logical sequence you use to explain all of it. You're a natural. P.S. where'd you get such a sweet dissectible model of the brain?? I want one!

[shamsaalishire]

you managed to teach me in 32 minutes what my lecturer could not in a year . you're truly the best !

[jennym]

I had a brain aneurysm rupture in my occipital lobe - I did lose some vision, but at least I survived. Now, I'm determined to study neuropsychology

[kaelynsmith]

This was super educational, I've had a really hard time grasping all this information as a whole in my A&P class but this video connected everything for me. Really appreciate it, best account ever!

[shabiyaparveen]

That was fantabulous!!! I am surviving med school just bcoz of you.... So well explained....

[TheVeryAngryShrimp]

I have a lab practical wednesday....should've studied more but I've learned more from you than traditional studying..cheers!

[javierhillier]

11:24 when u watch this video in quarantine this word definitely stays better than the other words in my memory.
Thx guy who chose that name

[steffin]

God bless you so much Zach for your hard work. Your videos really helps me a lot. Anatomy and physiology is now one of my favorite courses in Nursing school😘😘

[TheRealKaay]

I’m watching this video during COVID we don’t have in class labs for A&P 1 thanks for this video🙌🏽 it’s gold right now

[aeob]

with you we will crush all the exams, you amazing

[neelo]

You are a blessing for medical students

[arielshikoba]

BEST FREAKING VIDEO ON THE BRAIN EVER!! 🙌

[ihsanullahshad]

thanks for the easily understandable illustration of the brain anatomy, loved it

[architasaha]

What a brilliant way of teaching. A big thank.

[donnam]

Honestly I am not using my textbook because these videos are so well explained, I feel like I remember everything you say after you teach it once because of your facial expressions, hand movements and you continually repeat what you say. I just started nursing school and it has been very hard working from home, the lectures are dry and usually just audio versions. I am so glad I found your channel, Gotta lol, I am actually afraid my internet might go down and I'll lose this resource because it's so good, I am going to take anatomy for my electives through out my nursing degree I am just so excited. Thank you!

[Mango_.]

I’m here coz I have a practical test tomorrow. I really need this video. Thank you for sharing!

[abeda]

Thanks a lot❤ we all would appreciate it if you guys can add subtitles to this great video.

[caiolaudano]

I love this man!!! LoL
This Channel makes my medical graduation easier and richer in knowledge! Greetings from Feira de Santana - Bahia, Brazil!

[mounotashopno]

Thank you very much
I am amazed at your teacing skill
Don’t know what i would do without your lecture
❤❤❤❤❤❤❤ from Bangladesh brother
Huge respect sir