g15: overview of the neck - anatomy.med.utah.edu morton b.ppt.pdf · cervical fascia platysma m....
TRANSCRIPT
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G15: Overview of the Neck
GL15:
A - Bone Lab (Skulls) HSEB 4300
B - Posterior Triangle (Cadaver)
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UNIT 02: LECTURE EXAM
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UNIT 02: LAB EXAM
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G15: Overview of the Neck
David A. Morton, Ph.D.
Pg 3
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Skin
Pgs 3 & 4
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Superficial
cervical fascia
Platysma m.
Pgs 3 & 4
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Superficial
cervical fascia
Platysma m.
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Deep fascia
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Investing fascia
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Investing fascia
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Pretracheal
fascia
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Pretracheal
fascia
Infrahyoid mm.
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Pretracheal
fascia
Thyroid gland
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Pretracheal
fascia
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Trachea
Esophagus
Pretracheal
fascia
Buccopharyngeal
fascia
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Prevertebral
fascia
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Prevertebral
fascia
Deep cervical
mm.
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Levator
scapulae m.
Prevertebral
fascia
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Ant scalene
Middle scalene
Posterior scalene
Prevertebral
fascia
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Longus coli m.
Prevertebral
fascia
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Alar fascia
Prevertebral
fascia
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Prevertebral
fascia
Space
Sympathetic
trunk
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IJV
Carotid a.
Vagus n.
Carotid sheath
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IJV
Carotid a.
Vagus n.
Carotid sheath
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Retropharyngeal
space
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Cervical Plexus
• Ventral rami of C1-C4 (C5)
• Drawing the plexus (“9x2’s”)
– 2 up
– 2 across
– 2 X
– 2 down
- 2 down
- 2 loop
- 2 ends (out)
- 2 ends (in)
- 2 on top
Don’t forget the phrenic n. (C3, C4 and C5 keep the
diaphragm alive)Pgs 5 & 6
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Vessels of the Head and Neck
• Artery - Carotids
– Neck and Face: External carotid artery (ECA)
– Brain: Internal carotid artery (ICA)
• Veins - Jugulars
– Internal jugular vein (IJV)
Pgs 7 & 8
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R: Brachiocephalic trunk
L: Left subclavian a.
Pgs 7 & 8
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Common carotid a.
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Internal carotid a.
Carotid sinus
Carotid body
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External carotid a.
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External carotid a.
Superior thyroid
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External carotid a.
Asc. pharyngeal
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External carotid a.
Lingual
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External carotid a.
Facial
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External carotid a.
Occipital
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External carotid a.
Post. auricular
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External carotid a.
Maxillary
Superfic temporal
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Internal jugular v.
Pgs 7 & 8
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External jugular v.
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Retromandibular v.
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Retromandibular v.
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Facial v.
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Neck muscles
Pgs 9 & 10
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SCM m.
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Suprahyoid mm.
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Digastric m.
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Stylohyoid m.
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Mylohyoid m.
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Infrahyoid m.
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Longus coli/cap.
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Scalenes
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Trace a sensory neuron from the
dorsal root to the C3 dermatomeC1, C2, C3, C4, C5
Spinal nerve
Dorsal root/ramus
Ventral root/ramus
Ansa cervicalis (sup/inf)
Carotid sheath
Deep investing fascia
Pretracheal fascia
Prevertebral fascia
Superficial fascia
Anterior scalene muscle
Middle scalene muscle
Posterior scalene muscle
Platysma m.
Sternocleidomastoid m.
C2
C3
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• Dorsal root
• C3 spinal n.
• C3 ventral ramus
• Enters the gr auricular n. &
trans cervical n. and
supraclaviclar n.
• Exits between Ant and Mid
Scalene m.
• Pierces prevertebral fascia
• Post SCM m.
• Pierces deep investing fascia
• Pierces platysma m. in
superficial fascia
• Distributes to various regions of
C3 dermatome
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• Dorsal root
• C3 spinal n.
• C3 ventral ramus
• Enters the gr auricular n. &
trans cervical n. and
supraclaviclar n.
• Exits between Ant and Mid
Scalene m.
• Pierces prevertebral fascia
• Post SCM m.
• Pierces deep investing fascia
• Pierces platysma m. in
superficial fascia
• Distributes to various regions of
C3 dermatome
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• Dorsal root
• C3 spinal n.
• C3 ventral ramus
• Enters the gr auricular n. &
trans cervical n. and
supraclaviclar n.
• Exits between Ant and Mid
Scalene m.
• Pierces prevertebral fascia
• Post SCM m.
• Pierces deep investing fascia
• Pierces platysma m. in
superficial fascia
• Distributes to various regions of
C3 dermatome
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• Dorsal root
• C3 spinal n.
• C3 ventral ramus
• Enters the gr auricular n. &
trans cervical n. and
supraclaviclar n.
• Exits between Ant and Mid
Scalene m.
• Pierces prevertebral fascia
• Post SCM m.
• Pierces deep investing fascia
• Pierces platysma m. in
superficial fascia
• Distributes to various regions of
C3 dermatome
![Page 59: G15: Overview of the Neck - anatomy.med.utah.edu Morton B.ppt.pdf · cervical fascia Platysma m. Deep fascia. Investing fascia. Investing fascia. Pretracheal fascia. Pretracheal fascia](https://reader030.vdocuments.mx/reader030/viewer/2022040707/5e08269ba6d01c1aa7038e75/html5/thumbnails/59.jpg)
• Dorsal root
• C3 spinal n.
• C3 ventral ramus
• Enters the gr auricular n. &
trans cervical n. and
supraclaviclar n.
• Exits between Ant and Mid
Scalene m.
• Pierces prevertebral fascia
• Post SCM m.
• Pierces deep investing fascia
• Pierces platysma m. in
superficial fascia
• Distributes to various regions of
C3 dermatome
![Page 60: G15: Overview of the Neck - anatomy.med.utah.edu Morton B.ppt.pdf · cervical fascia Platysma m. Deep fascia. Investing fascia. Investing fascia. Pretracheal fascia. Pretracheal fascia](https://reader030.vdocuments.mx/reader030/viewer/2022040707/5e08269ba6d01c1aa7038e75/html5/thumbnails/60.jpg)
Trace a C3 motor neuron to the
sternothyroid muscle
C1, C2, C3, C4, C5
Spinal nerve
Dorsal root/ramus
Ventral root/ramus
Ansa cervicalis (sup/inf)
Carotid sheath
Deep investing fascia
Pretracheal fascia
Prevertebral fascia
Superficial fascia
Anterior scalene muscle
Middle scalene muscle
Posterior scalene muscle
Platysma m.
Sternocleidomastoid m.
![Page 61: G15: Overview of the Neck - anatomy.med.utah.edu Morton B.ppt.pdf · cervical fascia Platysma m. Deep fascia. Investing fascia. Investing fascia. Pretracheal fascia. Pretracheal fascia](https://reader030.vdocuments.mx/reader030/viewer/2022040707/5e08269ba6d01c1aa7038e75/html5/thumbnails/61.jpg)
• Ventral root
• C3 spinal n.
• C3 ventral ramus
• Exits between Ant and Mid
Scalene m.
• Pierces prevertebral fascia
• Enter carotid sheath plane
• Ans cervicalis (inf limb)
• Pierces Pretracheal fascia of
sternothryoid m.
• Innervates sternothyroid m.
![Page 62: G15: Overview of the Neck - anatomy.med.utah.edu Morton B.ppt.pdf · cervical fascia Platysma m. Deep fascia. Investing fascia. Investing fascia. Pretracheal fascia. Pretracheal fascia](https://reader030.vdocuments.mx/reader030/viewer/2022040707/5e08269ba6d01c1aa7038e75/html5/thumbnails/62.jpg)
• Ventral root
• C3 spinal n.
• C3 ventral ramus
• Exits between Ant and Mid
Scalene m.
• Pierces prevertebral fascia
• Enter carotid sheath plane
• Ans cervicalis (inf limb)
• Pierces Pretracheal fascia of
sternothryoid m.
• Innervates sternothyroid m.
![Page 63: G15: Overview of the Neck - anatomy.med.utah.edu Morton B.ppt.pdf · cervical fascia Platysma m. Deep fascia. Investing fascia. Investing fascia. Pretracheal fascia. Pretracheal fascia](https://reader030.vdocuments.mx/reader030/viewer/2022040707/5e08269ba6d01c1aa7038e75/html5/thumbnails/63.jpg)
• Ventral root
• C3 spinal n.
• C3 ventral ramus
• Exits between Ant and Mid
Scalene m.
• Pierces prevertebral fascia
• Enter carotid sheath plane
• Ans cervicalis (inf limb)
• Pierces Pretracheal fascia of
sternothryoid m.
• Innervates sternothyroid m.
![Page 64: G15: Overview of the Neck - anatomy.med.utah.edu Morton B.ppt.pdf · cervical fascia Platysma m. Deep fascia. Investing fascia. Investing fascia. Pretracheal fascia. Pretracheal fascia](https://reader030.vdocuments.mx/reader030/viewer/2022040707/5e08269ba6d01c1aa7038e75/html5/thumbnails/64.jpg)
• Ventral root
• C3 spinal n.
• C3 ventral ramus
• Exits between Ant and Mid
Scalene m.
• Pierces prevertebral fascia
• Enter carotid sheath plane
• Ans cervicalis (inf limb)
• Pierces Pretracheal fascia of
sternothryoid m.
• Innervates sternothyroid m.
![Page 65: G15: Overview of the Neck - anatomy.med.utah.edu Morton B.ppt.pdf · cervical fascia Platysma m. Deep fascia. Investing fascia. Investing fascia. Pretracheal fascia. Pretracheal fascia](https://reader030.vdocuments.mx/reader030/viewer/2022040707/5e08269ba6d01c1aa7038e75/html5/thumbnails/65.jpg)
THANK-YOU