Term
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Definition
Boundaries:
anterior median line of the neck
inferior border of the mandible
anterior border of the sternocleidomastoid muscle |
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Term
submandibular triangle
between _____ and _____
nearly filled by the _____ gland
_____ nerve enters this triangle to get to tongue |
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Definition
submandibular triangle
between inferior border of mandible and the anterior and posterior bellies of the digastric muscle
nearly filled by the submandibular gland
hypoglossal nerve (XII) enters this triangle to get to tongue
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Term
carotid triangle
Boundaries: _____, _____, and _____
contains _____ artery
_____ vein
_____ nerve |
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Definition
carotid triangle
superior belly of omohyoid, posterior belly of digastric, and ant. border of sternocleidomastoid
contains common carotid artery
internal jugular vein
vagus nerve
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Term
muscular triangle
Boundaries: _____, _____, and _____
contains the _____ muscles |
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Definition
muscular triangle
superior belly of omohyoid, anterior border of the sternocleidomastoid, and midline of the neck
contains the four infrahyoid muscles |
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Term
submental triangle
unpaired triangle
bounded inferiorly by _____, and laterally by the _____
floor is formed by _____
contains some lymph nodes |
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Definition
submental triangle
unpaired triangle
bounded inferiorly by hyoid bone, and laterally by the right and left anterior bellies of the digastric muscle
floor is formed by the two mylohyoid muscles
contains some lymph nodes
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Term
The hyoid bone is held in place and moved by a number of muscles called _____ and _____ muscles. |
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Definition
The hyoid bone is held in place and moved by a number of muscles called infrahyoid and suprahyoid muscles. |
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Term
| Suprahyoid: connect hyoid bone to skull (3) |
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Definition
mylohyoid
geniohyoid
digastric |
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Term
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Definition
Mylohyoid
Origin:mylohyoid line on mandible
Insertion:body of hyoid bone
Innervation:mylohyoid nerve from trigeminal nerve (V)
Function:elevates the hyoid, floor of mouth, and tongue |
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Term
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Definition
GENIOHYOID
Origin:mental spine of mandible
Insertion:body of hyoid bone
Innervation:branch of C1
Function:pulls hyoid anterosuperiorly
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Term
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Definition
DIGASTRIC
Origin:
anterior belly - digastric fossa on mandible
posterior belly - mastoid process
Insertion:two bellies are joined by an intermediate tendon which is connected to the hyoid thru a sling of fibrous connective tissue
Innervation:
anterior belly - trigeminal nerve (V)
posterior belly - facial nerve (VII)
Function:raise hyoid bone during swallowing
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Term
| Infrahyoid Muscles: anchor the hyoid bone (4) |
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Definition
sternohyoid
sternothyroid
thyrohyoid
omohyoid |
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Term
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Definition
STERNOHYOID
Origin:manubrium sterni and medial end of clavicle
Insertion:body of hyoid bone
Innervation:C1-3
Function:depress hyoid bone after elevation during swallowing |
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Term
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Definition
STERNOTHYROID
Origin:posterior surface of manubrium sterni
Insertion:thyroid cartilage
Innervation:C1-3
Function:depress hyoid bone |
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Term
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Definition
THYROHYOID
Origin:thyroid cartilage
Insertion:body and greater horn of hyoid
Innervation:C1
Function:depress hyoid bone |
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Term
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Definition
The Omohyoid Muscle has two bellies:
- Origin:
- inferior belly -upper border of scapula ending in a tendon under stern mastoid muscle
- superior belly -extends upward from this tendon
- Insertion:hyoid bone
- Innervation:C1-3
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Term
| Deep muscles of the neck (4) |
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Definition
longus colli
longus capitis
rectus capitis anterior
rectus capitis lateralis |
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Term
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Definition
Longus colli
- Origin: bodies of C5 - T3
- Insertion: bodies of C2 - C4
- Function: bilaterally - flexes cervical vertebrae, unilaterally - rotation and lateral flexion
- Innervation: ventral rami C2 - C8
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Term
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Definition
Longus capitis
- Origin: anterior tubercles of transverse processes of C3 - C6
- Innervation: inferior surface of the basilar portion of the occipital bone
- Function: bilaterally - flex cervical vertebrae and head, unilaterally - rotate and flex cervical vertebrae and head to the same side
- Innervation: C1 - C4
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Term
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Definition
Rectus capitis anterior
- Origin: anterior surface of lateral mass of the atlas
- Innervation: inferior surface of occipital bone anterior to foramen magnum
- Function: aids in head flexion at the neck
- Innervation: C1, C2
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Term
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Definition
Rectus capitis lateralis
- Origin: superior surface of the transverse processes of the atlas
- Innervation: inferior surface of jugular process, occipital bone
- Function: aids in lateral flexion of head on neck
- Innervation: C1, C2
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