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Gross Anatomy Unit 10
Posterior triangles and root of the neck
51
Health Care
Undergraduate 4
06/08/2009

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Cards

Term
The head, the thorax, and the upper limb
Definition
The neck is a junctional region between what structures?
Term
Vertebral levels C3 and C4
Definition
The hyoid bone is at what vertebral level?
Term
The mandible
Definition
When the head is relaxed, the hyoid bone lies under the cover of what bone?
Term
NONE!
Definition
With how many other bones does the hyoid bone articulate?
Term
Two
Definition
How many laminae compose the thyroid cartilage?
Term
The laryngeal prominence (Adam's apple)
Definition
What is the name of the junction between the two laminae of the thyroid cartilage?
Term
Vertebral level C4
Definition
The upper border of the thyroid cartilage is at what vertebral level?
Term
Vertebral level C6
Definition
The cricoid cartilage is located at what vertebral level?
Term
The cricoid cartilage
Definition
The trachea extends below what cartilage?
Term
The sternocleidomastoid muscle
Definition
What structure separates the anterior and posterior triangles of the neck?
Term
C2, C3, and C4
Definition
What dermatome levels innervate the skin of the neck?
Term
Cranial Nerve 7, the facial nerve
Definition
What innervates the platysma muscle?
Term
Ventral primary rami of the first 4 cervical nerves
Definition
The cervical plexus of nerves is formed by what?
Term
1. Lesser occipital nerve (C2)
2. Great auricular nerve (C2 and C3)
3. Transverse cervical nervse (C2 and C3)
4. Supraclavicular nerve (C3 and C4)
Definition
What are the four major cutaneous nerves from C2, C3, and C4?
Term
The area behind the ear over the mastoid process
Definition
The lesser occipital nerve innervates what part of the neck/head?
Term
The surface of the sternocleidomastoid muscle over the parotid region (the "sideburns")
Definition
The great auricular nerve innervates what part of the neck/head?
Term
The skin over the anterior triangle of the neck
Definition
The transverse cervical nerve innervates what part of the neck/head?
Term
The lower half of the posterior triangle and upper thoracic/deltoid regions over the clavicle
Definition
The supraclavicular nerve innervates what part of the neck/head?
Term
Motor
Definition
The ansa cervicalis is primarily what kind of nerve fibers?
Term
The ansa cervicalis
Definition
What nerve innervates the strap (infrahyoid) muscles?
Term
The hypoglossal nerve
Definition
The superior root of the ansa cervicalis (AKA the descendens hypoglossi) runs with what nerve?
Term
C1
Definition
The thyrohyoid and geniohyoid muscles are innervated by what cervical nerve?
Term
C2 and C3
Definition
The inferior root of the ansa cervicalis (AKA the descendens cervicalis) contains fibers from what vertebral levels?
Term
On the anterior surface of the internal jugular vein
Definition
Where do the inferior and superior roots of the ansa cervicalis join?
Term
The external jugular vein
Definition
What is the name of the most superficial vein?
Term
The subclavian vein
Definition
Where does the external jugular vein enter after piercing the investing fascia?
Term
The outer investing layer of deep fascia
Definition
What structure forms the "roof" of the posterior triange?
Term
The trapezius and the sternocleidomastoid muscles
Definition
The outer investing layer of deep fascia encloses what two major muscles?
Term
The prevertebral fascia
Definition
What is the name of the fascia that surrounds the vertebral column?
Term
1. The prevertebral fascia
2. Roots of the brachial plexus
Definition
The axillary sheath is formed by what two structures?
Term
The visceral fascia
Definition
What is the name of the fascia that encloses the pharynx, the esophagus, the larynx, the trachea, and the thyroid gland?
Term
1. The pretracheal fascia
2. The buccopharyngeal fascia
Definition
The visceral fascia can be subdivided into what two fascias?
Term
The retropharyngeal space
Definition
What is the name of the space between the pretracheal fascia and the buccopharyngeal fascia?
Term
The carotid sheath
Definition
What is the name of the connective tissue that surrounds the carotid artery, the internal jugular vein, and the vagus nerve?
Term
The sternocleidomastoid muscle, the trapezius muscle, and the clavicle
Definition
What three structures for the posterior triangle of the neck?
Term
The sternocleidomastoid muscle and
The trapezius muscle
Definition
The spinal accessory nerve innervates what two muscles?
Term
C5-C8 and T1
Definition
The brachial plexus includes nerves from what vertebral levels?
Term
The dorsal scapular nerve and
The long thoracic nerve
Definition
What are the names of the two nerves that come through the posterior triangle from rami of the brachial plexus?
Term
C5
Definition
The dorsal scapular nerve comes from what vertebral level(s)?
Term
C5, C6, and C7
Definition
The long thoracic nerve comes from what vertebral level(s)?
Term
The suprascapular nerve and
The nerve to the subclavius
Definition
What are the names of the two nerves that come through the posterior triangle from the upper trunk of the brachial plexus?
Term
C5 and C6
Definition
The suprascapular nerve comes from what vertebral level(s)?
Term
C5 and C6
Definition
The nerve to the subclavius comes from what vertebral level(s)?
Term
The investing fascia
Definition
The external jugular vein enters the inferomedial part of the posterior triange by piercing what structure?
Term
Medial, lateral, and posterior
Definition
The scalenus anterior muscle divides the subclavian artery into what three directions?
Term
1. The vertebral artery
2. The internal thoracic artery
3. The thyrocervical trunk
Definition
What are the three branches of the subclavian deep medial to the scalenus anterior?
Term
1. Inferior thyroid artery
2. Suprascapular artery
3. Transverse cervical artery
Definition
What are the three branches of the thyrocervical trunk?
Term
The superficial cervical artery
Definition
What is the name of the superficial branch of the transverse cervical artery if there is no deep branch?
Term
The dorsal scapular artery
Definition
What artery supplies the rhomboid muscle if there is no deep branch of the transverse cervical artery?
Term
1. The deep cervical artery
2. The highest intercostal artery
Definition
What are the two branches of the costocervical trunk?
Term
The lateral border of the first rib
Definition
Where does the subclavian artery become the axillary artery?
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