Triangles of the neck Flashcards
Within the carotid sinus, the afferent limb that comes out of it is what?
CN IX ( Glossopharyngeal N)
Remember this causes dilation
The efferent limb within the carotid sinus is what?
CN X ( vagus N)
The carotid body contains chemoreceptors that senses the level of O2. What nerve is involved in this?
CN IX
Remember if it senses Low levels of O2 it will tell the brain to increase the heart and depth of respiration and cardiac rate
What are the roots to the Ansa Cervicalis?
C1-C3
What Innervates the Thyrohyoid muscle and within which triangle would you find it?
C1 via CN XII
Found within muscular triangle
What branches does the external carotid give off?
Superior Thyroid»> Lingual»_space;>Ascending Pharyngeal»> Facial»> Occipital»>Maxillary»> Superficial Temporal
- Remember Some Lazy Anatomists Freak Out Med Students
What cranial Nerves are found in the Carotid Triangle?
CN X XI XII
Which branches of the cervical plexus are sensory?
Superficial branches
Which branches of the cervical plexus are motor?
Deep branches
The Skin of the neck is innervated by what?
C2 ( Lesser occipital)
Damage to the great auricular nerve ( C2- C3) will effect what?
Skin over the lower part of the parotid gland, the angle of the mandible, mastoid process, interior ear.
What supplies the innervation to the skin over the shoulder area?
C3-C4 ( supraclavicular n)
What is within the Superficial Cervical Fascia?
Platysma, Cutaneous Nerves, Blood and Lymph Vessels
The Superficial layer (investing layer) of the Deep Cervical Fascia contains what structures within it?
Trapezius, sternoclaidomastoid, muscles of expression
Which layer surrounds the infrahyoid muscles, the trachea, the buccinator, the thyroid and esophagus?
The muscles are surrounded by the Muscular portion of the deep cervical fascia
Visceral Layer surrounds the trachea buccinator thyroid and esophagus
