Lecture 17: Neck I Flashcards
the Stylohyoid articulates w/ the ______ via the _______ cartilage
temporal bones via the tympanohyoid cartilage
what does the thyrohyoid articulate w/
the thyroid cartilage
what is the origin of the Splenius
T1-T3 spines and cervical midline raphe
what is the insertion of the Splenius
nuchal crest and mastoid
what innervates the Splenius
dorsal rami
what is the action of the splenius
extends head and neck, some lateral bending of the cervical region
what are the most ventral (and hypaxial) of the cervical vertebral muscles
longus and scalenus muscles
what are the 4 rectus muscles
- rectus capitis dorsalis major
- rectus capitis dorsalis minor
- rectus capitis lateralis
- rectus capitis ventralis
what are the 2 oblique muscles of the vertebral column
obliquus capitis cranialis
obliquus capitis caudalis
what muscle type is specific to fine control of the atlantoaxial and atlantooccipital joints
capitis muscles
what are the 3 deep fascia compartments of the neck
- Cartoid sheath
- pretracheal fascia
- prevertebral fascia
what are the 2 primary cutaneous muscles that cover the neck
- Cutaneous colli
- platysma
in ungulates, the cutaneous colli is well developed near the ______
manubrium
what is the origin of the Sternocephalicus?
first sternebra (manubrium)
what is the insertion of the Sternocephalicus?
mastoid and nuchal crest
what innervates the Sternocephalicus?
accessory nerve (CN XI)
what is the action of the Sternocephalicus?
lateral and ventral flexion of the neck
what is indicated by green arrow
thoracic inlet
- space bounded by 1st ribs, sternum and T1 vertebra
what is shown by red arrow
mastoid process
what is shown by blue arrow
nuchal crest
what is shown by green arrow
external occipital protuberance
what is shown by red arrow
mastoid process
what is shown by blue arrow
nuchal crest
what is shown by green arrow
external occipital protuberance
what is shown by red
jugular foramen
what is shown by blue
hypoglossal canal
what is in green
occipital condyle
what does blue arrow point to
hyoid apparatus
- series of bones running from the temporal bones of the skull into the neck, supporting the tongue, larynx, pharynx
what does the red arrow point to
laryngeal cartilages
what is shown in green
stylohyoid of hyoid apparatus
- articulates w/ the temporal bone via tympanohyoid cartilage
what is shown in red
basihyoid
- unpaired bone anchored in the musculature of the base of the tongue
what is shown in black
thyrohyoid
what are the epaxial muscles of the head and neck
- spinalis
- semispinalis
- longissimus
what muscle is shown by green arrow
longus colli
found along the cranial thoracic vertebral bodies and transverse processes
what muscle is shown by blue arrow
longus capitis
lateral to the longus colli
what muscle is shown by red arrow
scalenus group of muscles
from the caudal cervical vertebrae to the cranial ribs
what muscle is shown by blue arrow
rectus capitis doralis minor
what muscle is in orange
obliquus capitis caudalis
what muscle is green
rectus capitis dorsalis major
what muscle is in red
rectus capitis lateralis
what muscle is in purple
rectus capitis ventralis
The carotid sheath compartment (GREEN) includes…
common carotid artery
internal jugular vein
vagosympathetic trunk
the pretracheal fascia compartment (BLUE) includes..
muscles and viscera of ventral neck
the prevertebral fascia compartment (RED) includes…
all muscles associated w/ vertebral column
what muscle is shown by blue arrow
platysma
what muscle is shown by green arrow
cutaneous colli
what muscle is shown by red arrow
Cleidocervicalis
(Brachiocephalicus)
what muscle is shown by green arrow
Trapezius cervicis
what muscle is shown by blue arrow
omnotransversarius
what muscle is shown by purple arrow
Cleidomastoideus
what muscle is shown in green
Sternocephalicus
- The most ventral of the (non-cutaneous)
neck muscles
what muscle is shown by blue arrow
Sternothyroideus
what muscle is shown by green arrow
Sternohyoideus
what muscle is shown by red arrow
Thyrohyoideus
what muscle is shown in blue
sternohyoideus
what muscle is shown in green
what muscle is green
splenius
what muscle is blue
semispinalis
what muscle is red
rectus capitis dorsalis major
what muscle is purple
obliquus capitis caudalis
what muscle is dark blue
longus colli
what muscle is brown
longus capitis
what muscle is blue
Brachiocephalicus (Cleidomastoideus)
what muscle is green
strenocephalicus
what muscle is red
sternohyoid
what muscle is pointed to in purple
sternothyroid