Deep Neck Flashcards
(37 cards)
What are the characteristics of longus coli in the deep neck?
- location: ant. to cervical vertebrae
- inn: C2-6
- action: flex & rotate neck
What are the prevertebral muscles of the deep neck?
- rectus capitis ant. & lat.
- longus capitis
- longus colli
- ant., middle, & post. scalene muscles
What are the characteristics of longus capitis in the deep neck?
- location: occipital bone
- inn: C1-3
- action: flex the head
What are the characteristics of rectus capitis anterior & lateralis in the deep neck?
- location: occipital bone
- inn: C1-2
- action: flex the head
What are the characteristics of the anterior scalene?
- location: transverse processes -> rib 1
- inn: C4-6
- action: flex head & neck
What are the characteristics of the middle scalene?
- location: post. tubercle -> rib 1
- no inn
- action: flex head & neck; elevate ribs
What are the characteristics of the posterior scalene?
- location: post. tubercle -> rib 2
- no inn
- action: flex head & neck; elevate ribs
What are the boundaries of the scalene triangle?
- ant: ant. scalene
- post: post. scalene
- base: 1st rib
What are the contents of the scalene triangle?
- phrenic nerve
- roots of brachial plexus
- subclavian art
Wha are the arteries of the deep neck?
- vertebral -> supplies medulla + cerebellum + spinal cord
- internal thoracic -> passes inf to thorax
- thyrocervical
What are the 4 branches/arteries of the thyrocervical trunk in the deep neck?
- inf thyroid -> supplies thyroid + esophagus + larynx + trachea + neck muscles + parathyroid glands
- ascending cervical -> lat neck muscles + intervert. foramen
- suprascapular -> shoulder region + SCM
- transverse cervical (dorsal scapular)
What are the 2 laryngeal nerves of the vagus nerve in the parasympathetic innervation of the deep neck?
- right recurrent -> loops inf to right subclavian art @ T1-2
- left recurrent -> loops inf to aortic arch @ T4-5
What sheath does the vagus nerve run through?
carotid
What are the characteristics of the phrenic nerve in the sympathetic innervation of the deep neck?
- starts lat to ant. scalene m. & then descends ant. to ant. scalene
- located between subclavian art. & v.
What are the characteristics of the sympathetic trunk in the sympathetic innervation of the deep neck?
- cervical plexus of nerves
- sup., middle, & inf ganglis
What is the most anterior structure of the viscera?
thyroid gland
What type of material can be found in the foramen cecum in the viscera?
thyroid material
What are the 4 glands of the parathyroid gland?
- right sup & inf glands
- left sup & inf glands
post to thyroid
What is the arterial supply of the viscera of the deep neck?
- sup. thyroid art -> off ext. carotid art.
- inf. thyroid art -> off thyrocervical trunk
What is the venous drainage, innervation, & lymphatics of the viscera of the deep neck?
- venous drainage: thyroid plexus
- inn: cervical ganglia -> vasomotor fibers
- lymphatics: prelaryngeal + pre/para lymph nodes
What is the larynx composed of?
cartilage & muscle
Where does the anterior vocal fold attach to?
laryngeal cartilage
Where does the posterior vocal fold attach to?
laryngeal muscle (arytenoids)
What are the laryngeal muscles & their actions?
- lat cricoarytenoid= adductor -> close vocal cords
- post. cricoarytenoid= abductor -> open vocal folds
- thyroarytenoid= relax vocal cords -> decrease pitch & length
- cricothyroid= tense vocal folds -> increase pitch & length
- oblique arytenoid= approximate vocal folds
- transverse arytenoid= approximate vocal folds
