Ch 20 Neck Flashcards
The neck has 8 bones, _ of which are cervical vertebrae and a _ bone
7, hyoid
The hyoid bone is _ shaped and lies on the _ portion of the neck between the _ and the _.
U, anterior, mandible and the larynx
The hyoid bone’s body sits _ and has 2 greater and lesser horns projecting _.
anteriorly , posteriorly
True or false: the hyoid bone articulates with CV3
FALSE; it doesn’t articulate with anything, just suspended by muscle
The _ AKA voice box is a cartilaginous organ located at the upper end of the _.
larynx, voicebox, trachea
The larynx consists of different cartilages but the largest is the _ cartilage
thyroid
larynx is AKA=
voice box
trachea is AKA =
windpipe
The _ AKA _ is a cartilaginous pipe that extends from the _ above coursing _ through the neck into the thorax
trachea, windpipe, larynx, inferiorly
The thyroid is an endocrine gland found on both _ of the trachea just _ the larynx
both sides, below
The _ of the thyroid connects its 2 _ across the trachea
isthmus, lobes
The parathyroid gland consists of - endocrine glands and is found on the _ surface of the thyroid gland
2-4, posterior
True or false: the thyroid and parathyroid are both supplied by the anterior and posterior thyroid arteries
FALSE
SUPERIOR and INFERIOR thyroid arteries
The muscle groups of the neck include (6):
-Platysma AKA Subcutaneous muscle
-Sternocleidomastoid
-INFRAhyoid muscles
-SUPRAhyoid muscles
-Scalene muscles
-Prevertebral muscles
Platysma is AKA=
Subcutaneous muscle ATTACHES TO THE SKIN
Platysma- origin-
Skin over the deltoid and pectoralis major muscles
think about shoulder and breast plates on deltoid and pecs of greek warriors
Platysma -insertion-
lower BORDER of the mandible
Platysma -action-
elevation of the skin OF the neck
Platysma -innervation-
CNVII AKA Facial Nerve
Sternocleidomastoid -origin-
STERNAL HEAD: manubrium of the sternum
CLAVICULAR HEAD: MEDIAL 3RD of the clavical
Sternocleidomastoid -insertion-
mastoid process of the skull
Sternocleidomastoid -action-
UNILATERAL: rotation of head to OPPOSITE side
BILATERAL: FLEXION of the head AT the neck
Sternocleidomastoid -innervation-
CNXI AKA Accessory Nerve
Infrahyoid muscles are AKA=
strap muscles
Infrahyoid muscle group AKA strap muscle group contains (4 muscles):
-ThyroHYoid
-SternoHYoid
-SternoTHYroid
-Omohyoid
ThyroHYoid -origin-*
thyroid cartilage
ThyroHyoid -insertion-
hyoid bone
ThyroHYoid -action-*
-elevation of larynx during speech and swallowing
-depression of the hyoid during speech and swallowing
ThyroHYoid -innervation-*
C1 VIA CNXII AKA Hypoglossal nerve
SternoHYoid -origin-
manubrium of the sternum
SternoHYoid -insertion-
hyoid bone
SternoHYoid -action-
depression of the larynx and hyoid during speech and swallowing
SternoHyoid -innervation-
Ansa Cervicalis
SternoTHYRoid -origin-
manubrium of the sternum
SternoTHYRoid -insertion-*
thyroid cartilage
SternoTHYRoid -action-
depression of the larynx and hyoid during speech and swallowing
SternoTHYRoid -innervation-
Ansa Cervicalis
Omohyoid -origin-*
SUPERIOR BORDER of the scapula
Omohyoid -insertion-
hyoid bone
Omohyoid -action-
depression of the larynx and hyoid during speech and swallowing
Omohyoid -innervation-
Ansa Cervicalis
Which muscle within the infrahyoid group AKA strap muscle group does NOT share an innervation with the rest? What is it?
Thyrohyoid
C1 via CN XII AKA hypoglossal nerve, not ansa cervicalis
Which muscle within the infrahyoid group AKA strap muscle group does NOT share an insertion with the rest? What is it?
Sternothyroid
thyroid bone, not hyoid bone
Which muscle within the infrahyoid group AKA strap muscle group does NOT share an action with the rest? What is it?
Thyrohyoid
elevation of larynx and depression of hyoid during speech and swallowing, not depression of both
Which muscles within the infrahyoid group AKA strap muscle group share their origin? What is it?
Sternohyoid and Sternothyroid
-manubrium of the sternum
The Suprahyoid muscle group includes (4 muscles):
Don’t Get Me Started
-Digastric
-Geniohyoid
-Mylohyoid
-Stylohyoid
The Scalene Muscle group includes (3 muscles):
-Scalene Anterior
-Scalene Medius
-Scalene Posterior
Scalene Anterior -origin-
cervical vertebrae
Scalene Anterior -insertion-
1st rib
Scalene Anterior -action-
LATERAL FLEXION of the neck
elevation of the 1st rib
Scalene Anterior -innervation-
Ventral Rami
Scalene Medius -origin-
cervical vertebrae
Scalene Medius -insertion-
1st rib
Scalene Medius -action-
LATERAL FLEXION of the neck
elevation of the 1st rib