filmov
tv
CN 6: Abducens Nerve (Scheme, Pathway, Clinical Relevance) | Neuroanatomy
Показать описание
Content:
0:00 Introduction
00:41 Abducens Nerve Scheme
01:53 Abducens Nerve Nucleus
04:05 Abducens Nerve Course
05:04 Lateral Rectus Muscle Function
06:25 Clinical Relevance
07:06 Recap
-------------------------------
-------------------------------
Abducens nerve is purely a motor nerve supplying the lateral rectus muscle involved in abduction of the eye
Abducens/abducent nerve Nucleus:
- Nucleus of abducens nerve (nucleus nervi abducentis)
○ Facial nerve goes around this nucleus forming the facial colliculus (colliculus facialis)
○ A somatomotor nucleus that is located in the pons innervates the lateral rectus
Course:
- Emerges from the medullopontine sulcus between the pons and medulla oblongata
- Leaves the brainstem on the ventral side
- Runs on the base of the skull, penetrates the dura mater then enter the cavernous sinus
- Enters the orbit via the superior orbital fissure and common tendinous ring
- Then innervates the lateral rectus
Function of lateral rectus muscle:
- Abduction of the eye
Hering's Law of equal innervation:
- Coordinates both eyes together, so that the medial and the lateral rectus muscle contracts equally, while deactivating the contralateral muscle through the medial longitudinal fasciculus.
Clinical Relevance:
- Abducens nerve can get compressed by a lesion or rise in intracranial pressure.
- Compression causes paralysis of lateral rectus muscle, resulting in medial deviation of affected eye, giving a fully adducted eye at rest and an inability to abduct the eye.
Sources:
- Singh, I. (2017). Human neuroanatomy (10th ed.).
Helwany M, Bordoni B. Neuroanatomy, Cranial Nerve 1 (Olfactory) [Updated 2022 Aug 8]. In: StatPearls [Internet]. Treasure Island (FL): StatPearls Publishing; 2022 Jan-
- Kozlowski, T. (2017). Memorix Anatomy: The Complete Study Guide. 2nd ed. Thieme Medical Publishers.
Pictures and visuals:
- Complete Anatomy
- Biorender
- Powerpoint
- Camtasia 2021
0:00 Introduction
00:41 Abducens Nerve Scheme
01:53 Abducens Nerve Nucleus
04:05 Abducens Nerve Course
05:04 Lateral Rectus Muscle Function
06:25 Clinical Relevance
07:06 Recap
-------------------------------
-------------------------------
Abducens nerve is purely a motor nerve supplying the lateral rectus muscle involved in abduction of the eye
Abducens/abducent nerve Nucleus:
- Nucleus of abducens nerve (nucleus nervi abducentis)
○ Facial nerve goes around this nucleus forming the facial colliculus (colliculus facialis)
○ A somatomotor nucleus that is located in the pons innervates the lateral rectus
Course:
- Emerges from the medullopontine sulcus between the pons and medulla oblongata
- Leaves the brainstem on the ventral side
- Runs on the base of the skull, penetrates the dura mater then enter the cavernous sinus
- Enters the orbit via the superior orbital fissure and common tendinous ring
- Then innervates the lateral rectus
Function of lateral rectus muscle:
- Abduction of the eye
Hering's Law of equal innervation:
- Coordinates both eyes together, so that the medial and the lateral rectus muscle contracts equally, while deactivating the contralateral muscle through the medial longitudinal fasciculus.
Clinical Relevance:
- Abducens nerve can get compressed by a lesion or rise in intracranial pressure.
- Compression causes paralysis of lateral rectus muscle, resulting in medial deviation of affected eye, giving a fully adducted eye at rest and an inability to abduct the eye.
Sources:
- Singh, I. (2017). Human neuroanatomy (10th ed.).
Helwany M, Bordoni B. Neuroanatomy, Cranial Nerve 1 (Olfactory) [Updated 2022 Aug 8]. In: StatPearls [Internet]. Treasure Island (FL): StatPearls Publishing; 2022 Jan-
- Kozlowski, T. (2017). Memorix Anatomy: The Complete Study Guide. 2nd ed. Thieme Medical Publishers.
Pictures and visuals:
- Complete Anatomy
- Biorender
- Powerpoint
- Camtasia 2021
0:07:41
CN 6: Abducens Nerve (Scheme, Pathway, Clinical Relevance) | Neuroanatomy
0:20:25
Abducens Nerve - Cranial Nerve 6 (CN VI) - Cavernous Sinus Syndrome, Pseudotumor cerebri
0:01:07
Part 7 of 13 - CN VI Abducens nerve
0:02:34
Management of Acute Isolated CN VI Palsy
0:12:01
Abducent (VI) Nerve Clinical Anatomy, Dr Adel Bondok
0:07:11
Cranial Nerve VI Palsy
0:00:21
Nervus Abducens origin
0:05:09
Cranial Nerve VI - Abducent Nerve | Origin, Structure, Pathway & Function
0:19:26
CN 3: Oculomotor Nerve (Scheme, Pathway, Clinical Relevance) | Neuroanatomy
0:08:09
Abducens Nerve - 1 | Course and Distribution
0:00:56
abducent nerve | 6 nerve | clinical correlate
0:17:46
RS Ocular Motor Cranial Nerves Sixth Nerve
0:07:01
The SIX syndromes of the SIXTH cranial nerve
0:00:15
6th Nerve Palsy
0:06:39
Sixth Cranial Nerve - Abducent Nerve | Nucleus | Course | Distribution | Applied Anatomy
0:00:14
Left Lateral Rectus (Abducens nerve) Palsy
0:07:03
Sixth (Abducens) Nerve Palsy: What is it? Why it Occurs? Will it get Better? Will I need Surgery?
0:40:35
Watch This to Memorize ALL 12 Cranial Nerves
0:28:11
Abducens Nerve | 6th Cranial Nerve | Neuroanatomy | Anatomy | Agam Webinars
0:00:49
Papilledema and 6th Nerve Palsy #Mustknow #Shorts
0:16:07
ABDUCENS NERVE (6th CRANIAL NERVE)
0:57:31
Neurology | Cranial Nerves: Overview
0:01:54
Horizontal gaze palsy vs. abducens nerve palsy
0:00:15
Cranial Nerve 3 Palsy
Комментарии