Shared Flashcard Set

Details

Neck Musculature
Action & Innervation of Neck Musculature
30
Anatomy
Graduate
11/22/2009

Additional Anatomy Flashcards

 


 

Cards

Term
Platysma: Action
Definition
Draws corner of mouth downward
Depresses mandible
Elevates skin of chest
Term
Platysma: Innervation
Definition
Cervical branch of Facial N. (CN VII)
Term
SCM: Action
Definition
Unilaterally acting: rotates head toward opposite side while elevating chin
Bilaterally acting: flexes head
Term
SCM: Innervation
Definition
Spinal Accessory N. (CN XI)
Cervical spinal nerves C2 & C3
Term
Digastric: Action
Definition
Elevates hyoid & base of tongue
With hyoid fixed via infrahyoid musculature, assists in opening the mouth
Term
Digastric: Innervation
Definition
Anterior belly: Mylohyoid N. (CN V3)
Posterior belly: Digastric branch of Facial N. (CN VII)
Term
Stylohyoid: Action
Definition
Elevates & retracts the hyoid & base of tongue
Term
Stylohyoid: Innervation
Definition
Digastric branch of Facial N. (CN VII)
Term
Mylohyoid: Action
Definition
Elevates hyoid & floor of mouth
When hyoid is fixed, depresses mandible
Term
Mylohoid: Innervation
Definition
Mylohyoid branch of Trigeminal (CN V3)
Term
Sternohyoid: Action
Definition
Depresses hyoid & larynx
Term
Sternohyoid: Innervation
Definition
Ansa cervicalis of cervical plexus
Term
Sternothyroid: Action
Definition
Depresses larynx
Term
Sternothyroid: Innervation
Definition
Ansa cervicalis of cervical plexus
Term
Thyrohyoid: Action
Definition
Depresses hyoid when larynx is fixed from below
Elevates larynx when hyoid is fixed from above
Term
Thyrohyoid: Innervation
Definition
C1 via Hypoglossal N.
Term
Omohyoid: Action
Definition
Stabilizes, retracts, & depresses hyoid & larynx
Term
Omohyoid: Innervation
Definition
Ansa cervicalis of cervical plexus
Term
Anterior Scalene: Action
Definition
Elevates 1st rib
Side bends & rotates cervical column to opposite side
Both sides acting flexes vertebral column
Term
Anterior Scalene: Innervation
Definition
Ventral rami: spinal nerves C5-C7
Term
Middle Scalene: Action
Definition
Elevates 1st rib
Side bends & rotates cervical column
Both sides acting flexes the vertebral column
Term
Middle Scalene: Innervation
Definition
Ventral rami: spinal nerves C3-C8
Term
Posterior Scalene: Action
Definition
Elevates 2nd rib
Side bends & rotates cervical column
Both sides acting flexes vertebral column
Term
Posterior Scalene: Innervation
Definition
Ventral rami from brachial plexus (C7-C8)
Term
Cricothyroid: Action
Definition
Draws the thyroid cartilage forward, lengthening the vocal ligaments
Term
Cricothyroid: Innervation
Definition
External branch of superior laryngeal nerve Branch of the vagus nerve (X)
Term
Splenius Capitis: Action
Definition
Extends and laterally bends the neck and head
Rotates head to the same side
Term
Splenius Capitis: Innervation
Definition
Dorsal primary rami of spinal nerves C2-C6
Term
Levator Scapulae: Action
Definition
Elevates scapula
Term
Levator Scapulae: Innervation
Definition
Dorsal scapular N. (C5)
Supporting users have an ad free experience!